Android中Notification的framework层讲解【安卓源码解析四】

             android的notificaiton的声音sound也是申请的AudioManager机制来播放声音的。最近让我找恢复出厂设置后，手机刚启动，接受短信没有声音，如果恢复出厂设置后，等一会儿，过个2分钟再接受短信，就有铃声了。下面我把我分析代码的方法写下来，给自己和读者一些启发：

      日历也是用的是Notification，但是恢复出厂设置后，立马设置日历后，日历可以出声音，我看日历的代码，结果发现日历只是用了Notification的闪屏，真正声音是日历自己实现了Mediaplayer来出声音的。所以我又不得不老老实实地研究Notification.sound到底把声音传递到什么地方去了？

       转载请标明出处：http://blog.csdn.net/wdaming1986/article/details/7081787

       首先，我在短信的com.android.mms.transaction包中的MessagingNotification的573行的java代码：notification.sound = TextUtils.isEmpty(ringtoneStr) ? null : Uri.parse(ringtoneStr);打log查看，发现这个uri确实是存在的，我推测：就是说这个uri传给了framework一层，但是framework一层有没有执行完的动作，所以不响。为了验证是不是短信的错误，我自己单独写了个notification的例子，一个按钮，点击就发出声音。这个例子在正常情况下能正常发声。我就恢复出厂设置后，运行这个例子，结果发现没有声音，这就充分验证了我的猜测。我就去framework去着notificaion.sound = 的声音传递给framework做什么事情了？？

       接着，在Source Insight软件中导入framework整个工程，然后搜索，notificaiton.sounds，结果搜到了，在framework/base/core/java/android/app/Notification.java类。

 

/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.app;

import java.util.Date;

import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.media.AudioManager;
import android.net.Uri;
import android.os.Parcel;
import android.os.Parcelable;
import android.text.TextUtils;
import android.text.format.DateFormat;
import android.text.format.DateUtils;
import android.widget.RemoteViews;

/**
 * A class that represents how a persistent notification is to be presented to
 * the user using the {@link android.app.NotificationManager}.
 *
 * <p>For a guide to creating notifications, see the
 * <a href="{@docRoot}guide/topics/ui/notifiers/notifications.html">Creating Status 
 * Bar Notifications</a> document in the Dev Guide.</p>
 */
public class Notification implements Parcelable
{
    /**
     * Use all default values (where applicable).
     */
    public static final int DEFAULT_ALL = ~0;
    
    /**
     * Use the default notification sound. This will ignore any given
     * {@link #sound}.
     * 
     * @see #defaults
     */ 
    public static final int DEFAULT_SOUND = 1;

    /**
     * Use the default notification vibrate. This will ignore any given
     * {@link #vibrate}. Using phone vibration requires the 
     * {@link android.Manifest.permission#VIBRATE VIBRATE} permission.
     * 
     * @see #defaults
     */ 
    public static final int DEFAULT_VIBRATE = 2;
    
    /**
     * Use the default notification lights. This will ignore the
     * {@link #FLAG_SHOW_LIGHTS} bit, and {@link #ledARGB}, {@link #ledOffMS}, or
     * {@link #ledOnMS}.
     * 
     * @see #defaults
     */ 
    public static final int DEFAULT_LIGHTS = 4;
    
    /**
     * The timestamp for the notification.  The icons and expanded views
     * are sorted by this key.
     */
    public long when;

    /**
     * The resource id of a drawable to use as the icon in the status bar.
     */
    public int icon;

    /**
     * The number of events that this notification represents.  For example, in a new mail
     * notification, this could be the number of unread messages.  This number is superimposed over
     * the icon in the status bar.  If the number is 0 or negative, it is not shown in the status
     * bar.
     */
    public int number;

    /**
     * The intent to execute when the expanded status entry is clicked.  If
     * this is an activity, it must include the
     * {@link android.content.Intent#FLAG_ACTIVITY_NEW_TASK} flag, which requires
     * that you take care of task management as described in the <em>Activities and Tasks</em>
     * section of the <a href="{@docRoot}guide/topics/fundamentals.html#acttask">Application 
     * Fundamentals</a> document.
     */
    public PendingIntent contentIntent;

    /**
     * The intent to execute when the status entry is deleted by the user
     * with the "Clear All Notifications" button. This probably shouldn't
     * be launching an activity since several of those will be sent at the
     * same time.
     */
    public PendingIntent deleteIntent;

    /**
     * An intent to launch instead of posting the notification to the status bar.
     * Only for use with extremely high-priority notifications demanding the user's
     * <strong>immediate</strong> attention, such as an incoming phone call or
     * alarm clock that the user has explicitly set to a particular time.
     * If this facility is used for something else, please give the user an option
     * to turn it off and use a normal notification, as this can be extremely
     * disruptive.
     */
    public PendingIntent fullScreenIntent;

    /**
     * Text to scroll across the screen when this item is added to
     * the status bar.
     */
    public CharSequence tickerText;

    /**
     * The view that will represent this notification in the expanded status bar.
     */
    public RemoteViews contentView;

    /**
     * If the icon in the status bar is to have more than one level, you can set this.  Otherwise,
     * leave it at its default value of 0.
     *
     * @see android.widget.ImageView#setImageLevel
     * @see android.graphics.drawable#setLevel
     */
    public int iconLevel;

    /**
     * The sound to play.
     * 
     * <p>
     * To play the default notification sound, see {@link #defaults}. 
     * </p>
     */
    public Uri sound;

    /**
     * Use this constant as the value for audioStreamType to request that
     * the default stream type for notifications be used.  Currently the
     * default stream type is STREAM_RING.
     */
    public static final int STREAM_DEFAULT = -1;

    /**
     * The audio stream type to use when playing the sound.
     * Should be one of the STREAM_ constants from
     * {@link android.media.AudioManager}.
     */
    public int audioStreamType = STREAM_DEFAULT;

    
    /**
     * The pattern with which to vibrate. 
     * 
     * <p>
     * To vibrate the default pattern, see {@link #defaults}.
     * </p>
     * 
     * @see android.os.Vibrator#vibrate(long[],int)
     */
    public long[] vibrate;

    /**
     * The color of the led.  The hardware will do its best approximation.
     *
     * @see #FLAG_SHOW_LIGHTS
     * @see #flags
     */
    public int ledARGB;

    /**
     * The number of milliseconds for the LED to be on while it's flashing.
     * The hardware will do its best approximation.
     *
     * @see #FLAG_SHOW_LIGHTS
     * @see #flags
     */
    public int ledOnMS;

    /**
     * The number of milliseconds for the LED to be off while it's flashing.
     * The hardware will do its best approximation.
     *
     * @see #FLAG_SHOW_LIGHTS
     * @see #flags
     */
    public int ledOffMS;

    /**
     * Specifies which values should be taken from the defaults.
     * <p>
     * To set, OR the desired from {@link #DEFAULT_SOUND},
     * {@link #DEFAULT_VIBRATE}, {@link #DEFAULT_LIGHTS}. For all default
     * values, use {@link #DEFAULT_ALL}.
     * </p>
     */
    public int defaults;


    /**
     * Bit to be bitwise-ored into the {@link #flags} field that should be
     * set if you want the LED on for this notification.
     * <ul>
     * <li>To turn the LED off, pass 0 in the alpha channel for colorARGB
     *      or 0 for both ledOnMS and ledOffMS.</li>
     * <li>To turn the LED on, pass 1 for ledOnMS and 0 for ledOffMS.</li>
     * <li>To flash the LED, pass the number of milliseconds that it should
     *      be on and off to ledOnMS and ledOffMS.</li>
     * </ul>
     * <p>
     * Since hardware varies, you are not guaranteed that any of the values
     * you pass are honored exactly.  Use the system defaults (TODO) if possible
     * because they will be set to values that work on any given hardware.
     * <p>
     * The alpha channel must be set for forward compatibility.
     * 
     */
    public static final int FLAG_SHOW_LIGHTS        = 0x00000001;

    /**
     * Bit to be bitwise-ored into the {@link #flags} field that should be
     * set if this notification is in reference to something that is ongoing,
     * like a phone call.  It should not be set if this notification is in
     * reference to something that happened at a particular point in time,
     * like a missed phone call.
     */
    public static final int FLAG_ONGOING_EVENT      = 0x00000002;

    /**
     * Bit to be bitwise-ored into the {@link #flags} field that if set,
     * the audio will be repeated until the notification is
     * cancelled or the notification window is opened.
     */
    public static final int FLAG_INSISTENT          = 0x00000004;

    /**
     * Bit to be bitwise-ored into the {@link #flags} field that should be
     * set if you want the sound and/or vibration play each time the
     * notification is sent, even if it has not been canceled before that.
     */
    public static final int FLAG_ONLY_ALERT_ONCE    = 0x00000008;

    /**
     * Bit to be bitwise-ored into the {@link #flags} field that should be
     * set if the notification should be canceled when it is clicked by the
     * user. 
     */
    public static final int FLAG_AUTO_CANCEL        = 0x00000010;

    /**
     * Bit to be bitwise-ored into the {@link #flags} field that should be
     * set if the notification should not be canceled when the user clicks
     * the Clear all button.
     */
    public static final int FLAG_NO_CLEAR           = 0x00000020;

    /**
     * Bit to be bitwise-ored into the {@link #flags} field that should be
     * set if this notification represents a currently running service.  This
     * will normally be set for you by {@link Service#startForeground}.
     */
    public static final int FLAG_FOREGROUND_SERVICE = 0x00000040;

    public int flags;

    /**
     * Constructs a Notification object with everything set to 0.
     */
    public Notification()
    {
        this.when = System.currentTimeMillis();
    }

    /**
     * @deprecated use {@link #Notification(int,CharSequence,long)} and {@link #setLatestEventInfo}.
     * @hide
     */
    public Notification(Context context, int icon, CharSequence tickerText, long when,
            CharSequence contentTitle, CharSequence contentText, Intent contentIntent)
    {
        this.when = when;
        this.icon = icon;
        this.tickerText = tickerText;
        setLatestEventInfo(context, contentTitle, contentText,
                PendingIntent.getActivity(context, 0, contentIntent, 0));
    }

    /**
     * Constructs a Notification object with the information needed to
     * have a status bar icon without the standard expanded view.
     *
     * @param icon          The resource id of the icon to put in the status bar.
     * @param tickerText    The text that flows by in the status bar when the notification first
     *                      activates.
     * @param when          The time to show in the time field.  In the System.currentTimeMillis
     *                      timebase.
     */
    public Notification(int icon, CharSequence tickerText, long when)
    {
        this.icon = icon;
        this.tickerText = tickerText;
        this.when = when;
    }

    /**
     * Unflatten the notification from a parcel.
     */
    public Notification(Parcel parcel)
    {
        int version = parcel.readInt();

        when = parcel.readLong();
        icon = parcel.readInt();
        number = parcel.readInt();
        if (parcel.readInt() != 0) {
            contentIntent = PendingIntent.CREATOR.createFromParcel(parcel);
        }
        if (parcel.readInt() != 0) {
            deleteIntent = PendingIntent.CREATOR.createFromParcel(parcel);
        }
        if (parcel.readInt() != 0) {
            tickerText = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(parcel);
        }
        if (parcel.readInt() != 0) {
            contentView = RemoteViews.CREATOR.createFromParcel(parcel);
        }
        defaults = parcel.readInt();
        flags = parcel.readInt();
        if (parcel.readInt() != 0) {
            sound = Uri.CREATOR.createFromParcel(parcel);
        }

        audioStreamType = parcel.readInt();
        vibrate = parcel.createLongArray();
        ledARGB = parcel.readInt();
        ledOnMS = parcel.readInt();
        ledOffMS = parcel.readInt();
        iconLevel = parcel.readInt();

        if (parcel.readInt() != 0) {
            fullScreenIntent = PendingIntent.CREATOR.createFromParcel(parcel);
        }
    }

    public Notification clone() {
        Notification that = new Notification();

        that.when = this.when;
        that.icon = this.icon;
        that.number = this.number;

        // PendingIntents are global, so there's no reason (or way) to clone them.
        that.contentIntent = this.contentIntent;
        that.deleteIntent = this.deleteIntent;
        that.fullScreenIntent = this.fullScreenIntent;

        if (this.tickerText != null) {
            that.tickerText = this.tickerText.toString();
        }
        if (this.contentView != null) {
            that.contentView = this.contentView.clone();
        }
        that.iconLevel = that.iconLevel;
        that.sound = this.sound; // android.net.Uri is immutable
        that.audioStreamType = this.audioStreamType;

        final long[] vibrate = this.vibrate;
        if (vibrate != null) {
            final int N = vibrate.length;
            final long[] vib = that.vibrate = new long[N];
            System.arraycopy(vibrate, 0, vib, 0, N);
        }

        that.ledARGB = this.ledARGB;
        that.ledOnMS = this.ledOnMS;
        that.ledOffMS = this.ledOffMS;
        that.defaults = this.defaults;
        
        that.flags = this.flags;

        return that;
    }

    public int describeContents() {
        return 0;
    }

    /**
     * Flatten this notification from a parcel.
     */
    public void writeToParcel(Parcel parcel, int flags)
    {
        parcel.writeInt(1);

        parcel.writeLong(when);
        parcel.writeInt(icon);
        parcel.writeInt(number);
        if (contentIntent != null) {
            parcel.writeInt(1);
            contentIntent.writeToParcel(parcel, 0);
        } else {
            parcel.writeInt(0);
        }
        if (deleteIntent != null) {
            parcel.writeInt(1);
            deleteIntent.writeToParcel(parcel, 0);
        } else {
            parcel.writeInt(0);
        }
        if (tickerText != null) {
            parcel.writeInt(1);
            TextUtils.writeToParcel(tickerText, parcel, flags);
        } else {
            parcel.writeInt(0);
        }
        if (contentView != null) {
            parcel.writeInt(1);
            contentView.writeToParcel(parcel, 0);
        } else {
            parcel.writeInt(0);
        }

        parcel.writeInt(defaults);
        parcel.writeInt(this.flags);

        if (sound != null) {
            parcel.writeInt(1);
            sound.writeToParcel(parcel, 0);
        } else {
            parcel.writeInt(0);
        }
        parcel.writeInt(audioStreamType);
        parcel.writeLongArray(vibrate);
        parcel.writeInt(ledARGB);
        parcel.writeInt(ledOnMS);
        parcel.writeInt(ledOffMS);
        parcel.writeInt(iconLevel);

        if (fullScreenIntent != null) {
            parcel.writeInt(1);
            fullScreenIntent.writeToParcel(parcel, 0);
        } else {
            parcel.writeInt(0);
        }
    }

    /**
     * Parcelable.Creator that instantiates Notification objects
     */
    public static final Parcelable.Creator<Notification> CREATOR
            = new Parcelable.Creator<Notification>()
    {
        public Notification createFromParcel(Parcel parcel)
        {
            return new Notification(parcel);
        }

        public Notification[] newArray(int size)
        {
            return new Notification[size];
        }
    };

    /**
     * Sets the {@link #contentView} field to be a view with the standard "Latest Event"
     * layout.
     *
     * <p>Uses the {@link #icon} and {@link #when} fields to set the icon and time fields
     * in the view.</p>
     * @param context       The context for your application / activity.
     * @param contentTitle The title that goes in the expanded entry.
     * @param contentText  The text that goes in the expanded entry.
     * @param contentIntent The intent to launch when the user clicks the expanded notification.
     * If this is an activity, it must include the
     * {@link android.content.Intent#FLAG_ACTIVITY_NEW_TASK} flag, which requires
     * that you take care of task management as described in 
     * <a href="{@docRoot}guide/topics/fundamentals.html#lcycles">Application Fundamentals: Activities and Tasks</a>.
     */
    public void setLatestEventInfo(Context context,
            CharSequence contentTitle, CharSequence contentText, PendingIntent contentIntent) {
        RemoteViews contentView = new RemoteViews(context.getPackageName(),
                com.android.internal.R.layout.status_bar_latest_event_content);
        if (this.icon != 0) {
            contentView.setImageViewResource(com.android.internal.R.id.icon, this.icon);
        }
        if (contentTitle != null) {
            contentView.setTextViewText(com.android.internal.R.id.title, contentTitle);
        }
        if (contentText != null) {
            contentView.setTextViewText(com.android.internal.R.id.text, contentText);
        }
        if (this.when != 0) {
            contentView.setLong(com.android.internal.R.id.time, "setTime", when);
        }

        this.contentView = contentView;
        this.contentIntent = contentIntent;
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("Notification(vibrate=");
        if (this.vibrate != null) {
            int N = this.vibrate.length-1;
            sb.append("[");
            for (int i=0; i<N; i++) {
                sb.append(this.vibrate[i]);
                sb.append(',');
            }
            if (N != -1) {
                sb.append(this.vibrate[N]);
            }
            sb.append("]");
        } else if ((this.defaults & DEFAULT_VIBRATE) != 0) {
            sb.append("default");
        } else {
            sb.append("null");
        }
        sb.append(",sound=");
        if (this.sound != null) {
            sb.append(this.sound.toString());
        } else if ((this.defaults & DEFAULT_SOUND) != 0) {
            sb.append("default");
        } else {
            sb.append("null");
        }
        sb.append(",defaults=0x");
        sb.append(Integer.toHexString(this.defaults));
        sb.append(",flags=0x");
        sb.append(Integer.toHexString(this.flags));
        sb.append(")");
        return sb.toString();
    }
}

在344行， sound = Uri.CREATOR.createFromParcel(parcel);回来经过打log发现，问题的关键不再这个类中。

          再次，改变方向，换条思路走，找notification的服务类，看有什么新的发现，在framework/base/services/java/com/android/server/NotificationManagerService.java类中，真的找到了我需要的，

/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.server;

import com.android.internal.statusbar.StatusBarNotification;
import com.android.server.StatusBarManagerService;

import android.app.ActivityManagerNative;
import android.app.IActivityManager;
import android.app.INotificationManager;
import android.app.ITransientNotification;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.StatusBarManager;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.res.Resources;
import android.database.ContentObserver;
import android.hardware.usb.UsbManager;
import android.media.AudioManager;
import android.net.Uri;
import android.os.BatteryManager;
import android.os.Bundle;
import android.os.Binder;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.os.Power;
import android.os.Process;
import android.os.RemoteException;
import android.os.SystemProperties;
import android.os.Vibrator;
import android.os.SystemClock;
import android.provider.Settings;
import android.telephony.TelephonyManager;
import android.text.TextUtils;
import android.util.EventLog;
import android.util.Slog;
import android.util.Log;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityManager;
import android.widget.Toast;

import java.io.FileDescriptor;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;

/** {@hide} */
public class NotificationManagerService extends INotificationManager.Stub
{
    private static final String TAG = "NotificationService";
    private static final boolean DBG = false;

    private static final int MAX_PACKAGE_NOTIFICATIONS = 50;
    private static final int NOTIFICATION_REQUEST_INTERVAL = 30000; // 30 seconds
    private static final int MAX_PACKAGE_NOTIFICATION_REQUESTS = 500;

    // message codes
    private static final int MESSAGE_TIMEOUT = 2;

    private static final int LONG_DELAY = 3500; // 3.5 seconds
    private static final int SHORT_DELAY = 2000; // 2 seconds

    private static final long[] DEFAULT_VIBRATE_PATTERN = {0, 250, 250, 250};

    private static final int DEFAULT_STREAM_TYPE = AudioManager.STREAM_NOTIFICATION;

    final Context mContext;
    final IActivityManager mAm;
    final IBinder mForegroundToken = new Binder();

    private WorkerHandler mHandler;
    private StatusBarManagerService mStatusBar;
    private LightsService mLightsService;
    private LightsService.Light mBatteryLight;
    private LightsService.Light mNotificationLight;
    private LightsService.Light mAttentionLight;

    private int mDefaultNotificationColor;
    private int mDefaultNotificationLedOn;
    private int mDefaultNotificationLedOff;

    private NotificationRecord mSoundNotification;
    private NotificationPlayer mSound;
    private boolean mSystemReady;
    private int mDisabledNotifications;

    private NotificationRecord mVibrateNotification;
    private Vibrator mVibrator = new Vibrator();

    // for enabling and disabling notification pulse behavior
    private boolean mScreenOn = true;
    private boolean mInCall = false;
    private boolean mNotificationPulseEnabled;
    // This is true if we have received a new notification while the screen is off
    // (that is, if mLedNotification was set while the screen was off)
    // This is reset to false when the screen is turned on.
    private boolean mPendingPulseNotification;

    // for adb connected notifications
    private boolean mAdbNotificationShown = false;
    private Notification mAdbNotification;

    private final ArrayList<NotificationRecord> mNotificationList =
            new ArrayList<NotificationRecord>();

    private class PackageRequestInfo {
        int requestCount;
        long lastPostTime;
    }

    private final HashMap<String, PackageRequestInfo> mPackageInfo =
            new HashMap<String, PackageRequestInfo>();

    private ArrayList<ToastRecord> mToastQueue;

    private ArrayList<NotificationRecord> mLights = new ArrayList<NotificationRecord>();

    private boolean mBatteryCharging;
    private boolean mBatteryLow;
    private boolean mBatteryFull;
    private NotificationRecord mLedNotification;

    private static final int BATTERY_LOW_ARGB = 0xFFFF0000; // Charging Low - red solid on
    private static final int BATTERY_MEDIUM_ARGB = 0xFFFFFF00;    // Charging - orange solid on
    private static final int BATTERY_FULL_ARGB = 0xFF00FF00; // Charging Full - green solid on
    private static final int BATTERY_BLINK_ON = 125;
    private static final int BATTERY_BLINK_OFF = 2875;

    private static String idDebugString(Context baseContext, String packageName, int id) {
        Context c = null;

        if (packageName != null) {
            try {
                c = baseContext.createPackageContext(packageName, 0);
            } catch (NameNotFoundException e) {
                c = baseContext;
            }
        } else {
            c = baseContext;
        }

        String pkg;
        String type;
        String name;

        Resources r = c.getResources();
        try {
            return r.getResourceName(id);
        } catch (Resources.NotFoundException e) {
            return "<name unknown>";
        }
    }

    private static final class NotificationRecord
    {
        final String pkg;
        final String tag;
        final int id;
        final int uid;
        final int initialPid;
        ITransientNotification callback;
        int duration;
        final Notification notification;
        IBinder statusBarKey;

        NotificationRecord(String pkg, String tag, int id, int uid, int initialPid,
                Notification notification)
        {
            this.pkg = pkg;
            this.tag = tag;
            this.id = id;
            this.uid = uid;
            this.initialPid = initialPid;
            this.notification = notification;
        }

        void dump(PrintWriter pw, String prefix, Context baseContext) {
            pw.println(prefix + this);
            pw.println(prefix + "  icon=0x" + Integer.toHexString(notification.icon)
                    + " / " + idDebugString(baseContext, this.pkg, notification.icon));
            pw.println(prefix + "  contentIntent=" + notification.contentIntent);
            pw.println(prefix + "  deleteIntent=" + notification.deleteIntent);
            pw.println(prefix + "  tickerText=" + notification.tickerText);
            pw.println(prefix + "  contentView=" + notification.contentView);
            pw.println(prefix + "  defaults=0x" + Integer.toHexString(notification.defaults));
            pw.println(prefix + "  flags=0x" + Integer.toHexString(notification.flags));
            pw.println(prefix + "  sound=" + notification.sound);
            pw.println(prefix + "  vibrate=" + Arrays.toString(notification.vibrate));
            pw.println(prefix + "  ledARGB=0x" + Integer.toHexString(notification.ledARGB)
                    + " ledOnMS=" + notification.ledOnMS
                    + " ledOffMS=" + notification.ledOffMS);
        }

        @Override
        public final String toString()
        {
            return "NotificationRecord{"
                + Integer.toHexString(System.identityHashCode(this))
                + " pkg=" + pkg
                + " id=" + Integer.toHexString(id)
                + " tag=" + tag + "}";
        }
    }

    private static final class ToastRecord
    {
        final int pid;
        final String pkg;
        final ITransientNotification callback;
        int duration;

        ToastRecord(int pid, String pkg, ITransientNotification callback, int duration)
        {
            this.pid = pid;
            this.pkg = pkg;
            this.callback = callback;
            this.duration = duration;
        }

        void update(int duration) {
            this.duration = duration;
        }

        void dump(PrintWriter pw, String prefix) {
            pw.println(prefix + this);
        }

        @Override
        public final String toString()
        {
            return "ToastRecord{"
                + Integer.toHexString(System.identityHashCode(this))
                + " pkg=" + pkg
                + " callback=" + callback
                + " duration=" + duration;
        }
    }

    private StatusBarManagerService.NotificationCallbacks mNotificationCallbacks
            = new StatusBarManagerService.NotificationCallbacks() {

        public void onSetDisabled(int status) {
            synchronized (mNotificationList) {
                mDisabledNotifications = status;
                if ((mDisabledNotifications & StatusBarManager.DISABLE_NOTIFICATION_ALERTS) != 0) {
                    // cancel whatever's going on
                    long identity = Binder.clearCallingIdentity();
                    try {
                        mSound.stop();
                    }
                    finally {
                        Binder.restoreCallingIdentity(identity);
                    }

                    identity = Binder.clearCallingIdentity();
                    try {
                        mVibrator.cancel();
                    }
                    finally {
                        Binder.restoreCallingIdentity(identity);
                    }
                }
            }
        }

        public void onClearAll() {
            cancelAll();
        }

        public void onNotificationClick(String pkg, String tag, int id) {
            cancelNotification(pkg, tag, id, Notification.FLAG_AUTO_CANCEL,
                    Notification.FLAG_FOREGROUND_SERVICE);
        }

        public void onPanelRevealed() {
            synchronized (mNotificationList) {
                // sound
                mSoundNotification = null;
                long identity = Binder.clearCallingIdentity();
                try {
                    mSound.stop();
                }
                finally {
                    Binder.restoreCallingIdentity(identity);
                }

                // vibrate
                mVibrateNotification = null;
                identity = Binder.clearCallingIdentity();
                try {
                    mVibrator.cancel();
                }
                finally {
                    Binder.restoreCallingIdentity(identity);
                }

                // light
                mLights.clear();
                mLedNotification = null;
                updateLightsLocked();
            }
        }

        public void onNotificationError(String pkg, String tag, int id,
                int uid, int initialPid, String message) {
            Slog.d(TAG, "onNotification error pkg=" + pkg + " tag=" + tag + " id=" + id
                    + "; will crashApplication(uid=" + uid + ", pid=" + initialPid + ")");
            cancelNotification(pkg, tag, id, 0, 0);
            long ident = Binder.clearCallingIdentity();
            try {
                ActivityManagerNative.getDefault().crashApplication(uid, initialPid, pkg,
                        "Bad notification posted from package " + pkg
                        + ": " + message);
            } catch (RemoteException e) {
            }
            Binder.restoreCallingIdentity(ident);
        }
    };

    private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();

            boolean queryRestart = false;
            
            if (action.equals(Intent.ACTION_BATTERY_CHANGED)) {
                boolean batteryCharging = (intent.getIntExtra("plugged", 0) != 0);
                int level = intent.getIntExtra("level", -1);
                boolean batteryLow = (level >= 0 && level <= Power.LOW_BATTERY_THRESHOLD);
                int status = intent.getIntExtra("status", BatteryManager.BATTERY_STATUS_UNKNOWN);
                boolean batteryFull = (status == BatteryManager.BATTERY_STATUS_FULL || level >= 90);

                if (batteryCharging != mBatteryCharging ||
                        batteryLow != mBatteryLow ||
                        batteryFull != mBatteryFull) {
                    mBatteryCharging = batteryCharging;
                    mBatteryLow = batteryLow;
                    mBatteryFull = batteryFull;
                    updateLights();
                }
            } else if (action.equals(UsbManager.ACTION_USB_STATE)) {
                Bundle extras = intent.getExtras();
                boolean usbConnected = extras.getBoolean(UsbManager.USB_CONNECTED);
                boolean adbEnabled = (UsbManager.USB_FUNCTION_ENABLED.equals(
                                    extras.getString(UsbManager.USB_FUNCTION_ADB)));
                updateAdbNotification(usbConnected && adbEnabled);
            } else if (action.equals(Intent.ACTION_PACKAGE_REMOVED)
                    || action.equals(Intent.ACTION_PACKAGE_RESTARTED)
                    || (queryRestart=action.equals(Intent.ACTION_QUERY_PACKAGE_RESTART))
                    || action.equals(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE)) {
                String pkgList[] = null;
                if (action.equals(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE)) {
                    pkgList = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST);
                } else if (queryRestart) {
                    pkgList = intent.getStringArrayExtra(Intent.EXTRA_PACKAGES);
                } else {
                    Uri uri = intent.getData();
                    if (uri == null) {
                        return;
                    }
                    String pkgName = uri.getSchemeSpecificPart();
                    if (pkgName == null) {
                        return;
                    }
                    pkgList = new String[]{pkgName};
                }
                if (pkgList != null && (pkgList.length > 0)) {
                    for (String pkgName : pkgList) {
                        cancelAllNotificationsInt(pkgName, 0, 0, !queryRestart);
                    }
                }
            } else if (action.equals(Intent.ACTION_SCREEN_ON)) {
                mScreenOn = true;
                updateNotificationPulse();
            } else if (action.equals(Intent.ACTION_SCREEN_OFF)) {
                mScreenOn = false;
                updateNotificationPulse();
            } else if (action.equals(TelephonyManager.ACTION_PHONE_STATE_CHANGED)) {
                mInCall = (intent.getStringExtra(TelephonyManager.EXTRA_STATE).equals(TelephonyManager.EXTRA_STATE_OFFHOOK));
                updateNotificationPulse();
            }
        }
    };

    class SettingsObserver extends ContentObserver {
        SettingsObserver(Handler handler) {
            super(handler);
        }

        void observe() {
            ContentResolver resolver = mContext.getContentResolver();
            resolver.registerContentObserver(Settings.System.getUriFor(
                    Settings.System.NOTIFICATION_LIGHT_PULSE), false, this);
            update();
        }

        @Override public void onChange(boolean selfChange) {
            update();
        }

        public void update() {
            ContentResolver resolver = mContext.getContentResolver();
            boolean pulseEnabled = Settings.System.getInt(resolver,
                        Settings.System.NOTIFICATION_LIGHT_PULSE, 0) != 0;
            if (mNotificationPulseEnabled != pulseEnabled) {
                mNotificationPulseEnabled = pulseEnabled;
                updateNotificationPulse();
            }
        }
    }

    NotificationManagerService(Context context, StatusBarManagerService statusBar,
            LightsService lights)
    {
        super();
        mContext = context;
        mLightsService = lights;
        mAm = ActivityManagerNative.getDefault();
        mSound = new NotificationPlayer(TAG);
        mSound.setUsesWakeLock(context);
        mToastQueue = new ArrayList<ToastRecord>();
        mHandler = new WorkerHandler();

        mStatusBar = statusBar;
        statusBar.setNotificationCallbacks(mNotificationCallbacks);

        mBatteryLight = lights.getLight(LightsService.LIGHT_ID_BATTERY);
        mNotificationLight = lights.getLight(LightsService.LIGHT_ID_NOTIFICATIONS);
        mAttentionLight = lights.getLight(LightsService.LIGHT_ID_ATTENTION);

        Resources resources = mContext.getResources();
        mDefaultNotificationColor = resources.getColor(
                com.android.internal.R.color.config_defaultNotificationColor);
        mDefaultNotificationLedOn = resources.getInteger(
                com.android.internal.R.integer.config_defaultNotificationLedOn);
        mDefaultNotificationLedOff = resources.getInteger(
                com.android.internal.R.integer.config_defaultNotificationLedOff);

        // Don't start allowing notifications until the setup wizard has run once.
        // After that, including subsequent boots, init with notifications turned on.
        // This works on the first boot because the setup wizard will toggle this
        // flag at least once and we'll go back to 0 after that.
        if (0 == Settings.Secure.getInt(mContext.getContentResolver(),
                    Settings.Secure.DEVICE_PROVISIONED, 0)) {
            mDisabledNotifications = StatusBarManager.DISABLE_NOTIFICATION_ALERTS;
        }

        // register for battery changed notifications
        IntentFilter filter = new IntentFilter();
        filter.addAction(Intent.ACTION_BATTERY_CHANGED);
        filter.addAction(UsbManager.ACTION_USB_STATE);
        filter.addAction(Intent.ACTION_SCREEN_ON);
        filter.addAction(Intent.ACTION_SCREEN_OFF);
        filter.addAction(TelephonyManager.ACTION_PHONE_STATE_CHANGED);
        mContext.registerReceiver(mIntentReceiver, filter);
        IntentFilter pkgFilter = new IntentFilter();
        pkgFilter.addAction(Intent.ACTION_PACKAGE_REMOVED);
        pkgFilter.addAction(Intent.ACTION_PACKAGE_RESTARTED);
        pkgFilter.addAction(Intent.ACTION_QUERY_PACKAGE_RESTART);
        pkgFilter.addDataScheme("package");
        mContext.registerReceiver(mIntentReceiver, pkgFilter);
        IntentFilter sdFilter = new IntentFilter(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE);
        mContext.registerReceiver(mIntentReceiver, sdFilter);

        SettingsObserver observer = new SettingsObserver(mHandler);
        observer.observe();
    }

    void systemReady() {
        // no beeping until we're basically done booting
        mSystemReady = true;
    }

    // Toasts
    // ============================================================================
    public void enqueueToast(String pkg, ITransientNotification callback, int duration)
    {
        if (DBG) Slog.i(TAG, "enqueueToast pkg=" + pkg + " callback=" + callback + " duration=" + duration);

        if (pkg == null || callback == null) {
            Slog.e(TAG, "Not doing toast. pkg=" + pkg + " callback=" + callback);
            return ;
        }

        synchronized (mToastQueue) {
            int callingPid = Binder.getCallingPid();
            long callingId = Binder.clearCallingIdentity();
            try {
                ToastRecord record;
                int index = indexOfToastLocked(pkg, callback);
                // If it's already in the queue, we update it in place, we don't
                // move it to the end of the queue.
                if (index >= 0) {
                    record = mToastQueue.get(index);
                    record.update(duration);
                } else {
                    // Limit the number of toasts that any given package except the android
                    // package can enqueue.  Prevents DOS attacks and deals with leaks.
                    if (!"android".equals(pkg)) {
                        int count = 0;
                        final int N = mToastQueue.size();
                        for (int i=0; i<N; i++) {
                             final ToastRecord r = mToastQueue.get(i);
                             if (r.pkg.equals(pkg)) {
                                 count++;
                                 if (count >= MAX_PACKAGE_NOTIFICATIONS) {
                                     Slog.e(TAG, "Package has already posted " + count
                                            + " toasts. Not showing more. Package=" + pkg);
                                     return;
                                 }
                             }
                        }
                    }

                    record = new ToastRecord(callingPid, pkg, callback, duration);
                    mToastQueue.add(record);
                    index = mToastQueue.size() - 1;
                    keepProcessAliveLocked(callingPid);
                }
                // If it's at index 0, it's the current toast.  It doesn't matter if it's
                // new or just been updated.  Call back and tell it to show itself.
                // If the callback fails, this will remove it from the list, so don't
                // assume that it's valid after this.
                if (index == 0) {
                    showNextToastLocked();
                }
            } finally {
                Binder.restoreCallingIdentity(callingId);
            }
        }
    }

    public void cancelToast(String pkg, ITransientNotification callback) {
        Slog.i(TAG, "cancelToast pkg=" + pkg + " callback=" + callback);

        if (pkg == null || callback == null) {
            Slog.e(TAG, "Not cancelling notification. pkg=" + pkg + " callback=" + callback);
            return ;
        }

        synchronized (mToastQueue) {
            long callingId = Binder.clearCallingIdentity();
            try {
                int index = indexOfToastLocked(pkg, callback);
                if (index >= 0) {
                    cancelToastLocked(index);
                } else {
                    Slog.w(TAG, "Toast already cancelled. pkg=" + pkg + " callback=" + callback);
                }
            } finally {
                Binder.restoreCallingIdentity(callingId);
            }
        }
    }

    private void showNextToastLocked() {
        ToastRecord record = mToastQueue.get(0);
        while (record != null) {
            if (DBG) Slog.d(TAG, "Show pkg=" + record.pkg + " callback=" + record.callback);
            try {
                record.callback.show();
                scheduleTimeoutLocked(record, false);
                return;
            } catch (RemoteException e) {
                Slog.w(TAG, "Object died trying to show notification " + record.callback
                        + " in package " + record.pkg);
                // remove it from the list and let the process die
                int index = mToastQueue.indexOf(record);
                if (index >= 0) {
                    mToastQueue.remove(index);
                }
                keepProcessAliveLocked(record.pid);
                if (mToastQueue.size() > 0) {
                    record = mToastQueue.get(0);
                } else {
                    record = null;
                }
            }
        }
    }

    private void cancelToastLocked(int index) {
        ToastRecord record = mToastQueue.get(index);
        try {
            record.callback.hide();
        } catch (RemoteException e) {
            Slog.w(TAG, "Object died trying to hide notification " + record.callback
                    + " in package " + record.pkg);
            // don't worry about this, we're about to remove it from
            // the list anyway
        }
        mToastQueue.remove(index);
        keepProcessAliveLocked(record.pid);
        if (mToastQueue.size() > 0) {
            // Show the next one. If the callback fails, this will remove
            // it from the list, so don't assume that the list hasn't changed
            // after this point.
            showNextToastLocked();
        }
    }

    private void scheduleTimeoutLocked(ToastRecord r, boolean immediate)
    {
        Message m = Message.obtain(mHandler, MESSAGE_TIMEOUT, r);
        long delay = immediate ? 0 : (r.duration == Toast.LENGTH_LONG ? LONG_DELAY : SHORT_DELAY);
        mHandler.removeCallbacksAndMessages(r);
        mHandler.sendMessageDelayed(m, delay);
    }

    private void handleTimeout(ToastRecord record)
    {
        if (DBG) Slog.d(TAG, "Timeout pkg=" + record.pkg + " callback=" + record.callback);
        synchronized (mToastQueue) {
            int index = indexOfToastLocked(record.pkg, record.callback);
            if (index >= 0) {
                cancelToastLocked(index);
            }
        }
    }

    // lock on mToastQueue
    private int indexOfToastLocked(String pkg, ITransientNotification callback)
    {
        IBinder cbak = callback.asBinder();
        ArrayList<ToastRecord> list = mToastQueue;
        int len = list.size();
        for (int i=0; i<len; i++) {
            ToastRecord r = list.get(i);
            if (r.pkg.equals(pkg) && r.callback.asBinder() == cbak) {
                return i;
            }
        }
        return -1;
    }

    // lock on mToastQueue
    private void keepProcessAliveLocked(int pid)
    {
        int toastCount = 0; // toasts from this pid
        ArrayList<ToastRecord> list = mToastQueue;
        int N = list.size();
        for (int i=0; i<N; i++) {
            ToastRecord r = list.get(i);
            if (r.pid == pid) {
                toastCount++;
            }
        }
        try {
            mAm.setProcessForeground(mForegroundToken, pid, toastCount > 0);
        } catch (RemoteException e) {
            // Shouldn't happen.
        }
    }

    private final class WorkerHandler extends Handler
    {
        @Override
        public void handleMessage(Message msg)
        {
            switch (msg.what)
            {
                case MESSAGE_TIMEOUT:
                    handleTimeout((ToastRecord)msg.obj);
                    break;
            }
        }
    }


    // Notifications
    // ============================================================================
    public void enqueueNotification(String pkg, int id, Notification notification, int[] idOut)
    {
        enqueueNotificationWithTag(pkg, null /* tag */, id, notification, idOut);
    }

    public void enqueueNotificationWithTag(String pkg, String tag, int id, Notification notification,
            int[] idOut)
    {
        enqueueNotificationInternal(pkg, Binder.getCallingUid(), Binder.getCallingPid(),
                tag, id, notification, idOut);
    }

    // Not exposed via Binder; for system use only (otherwise malicious apps could spoof the
    // uid/pid of another application)
    public void enqueueNotificationInternal(String pkg, int callingUid, int callingPid,
            String tag, int id, Notification notification, int[] idOut)
    {
        checkIncomingCall(pkg);

        // Limit the number of notifications that any given package except the android
        // package can enqueue.  Prevents DOS attacks and deals with leaks.
        if (!"android".equals(pkg)) {
            synchronized (mNotificationList) {
                int count = 0;
                final int N = mNotificationList.size();
                for (int i=0; i<N; i++) {
                    final NotificationRecord r = mNotificationList.get(i);
                    if (r.pkg.equals(pkg)) {
                        count++;
                        if (count >= MAX_PACKAGE_NOTIFICATIONS) {
                            Slog.e(TAG, "Package has already posted " + count
                                    + " notifications.  Not showing more.  package=" + pkg);
                            return;
                        }
                    }
                }
            }
        }

        // Limit the number of notification requests, notify and cancel that
        // a package can post. The MAX_PACKAGE_NOTIFICATIONS doesn't work for
        // packages which notify and quickly cancel it and do this in an
        // iteration
        if (!"android".equals(pkg)) {
            synchronized (mPackageInfo) {
                if (!mPackageInfo.containsKey(pkg)) {
                    final PackageRequestInfo pInfo = new PackageRequestInfo();
                    pInfo.requestCount = 1;
                    pInfo.lastPostTime = SystemClock.elapsedRealtime();
                    mPackageInfo.put(pkg,pInfo);
                }
                else {
                    final PackageRequestInfo pInfo = mPackageInfo.get(pkg);
                    final long currentTime = SystemClock.elapsedRealtime();
                    if ((currentTime - pInfo.lastPostTime) <= NOTIFICATION_REQUEST_INTERVAL) {
                         // Keep track of requests posted within last 30 seconds
                         pInfo.requestCount++;
                    }
                    else {
                         pInfo.requestCount = 1;
                         pInfo.lastPostTime = SystemClock.elapsedRealtime();
                    }

                    if (pInfo.requestCount >= MAX_PACKAGE_NOTIFICATION_REQUESTS) {
                        // 500 requests within a span of 30 seconds is high
                        if (pInfo.requestCount%MAX_PACKAGE_NOTIFICATION_REQUESTS == 0) {
                            Slog.e(TAG, "Package has already posted too many notifications. "
                                    + "Not showing more.  package=" + pkg);
                        }
                        return;
                    }
                }
            }
        }

        // This conditional is a dirty hack to limit the logging done on
        //     behalf of the download manager without affecting other apps.
        if (!pkg.equals("com.android.providers.downloads")
                || Log.isLoggable("DownloadManager", Log.VERBOSE)) {
            EventLog.writeEvent(EventLogTags.NOTIFICATION_ENQUEUE, pkg, id, notification.toString());
        }

        if (pkg == null || notification == null) {
            throw new IllegalArgumentException("null not allowed: pkg=" + pkg
                    + " id=" + id + " notification=" + notification);
        }
        if (notification.icon != 0) {
            if (notification.contentView == null) {
                throw new IllegalArgumentException("contentView required: pkg=" + pkg
                        + " id=" + id + " notification=" + notification);
            }
            if (notification.contentIntent == null) {
                throw new IllegalArgumentException("contentIntent required: pkg=" + pkg
                        + " id=" + id + " notification=" + notification);
            }
        }

        synchronized (mNotificationList) {
            NotificationRecord r = new NotificationRecord(pkg, tag, id,
                    callingUid, callingPid, notification);
            NotificationRecord old = null;

            int index = indexOfNotificationLocked(pkg, tag, id);
            if (index < 0) {
                mNotificationList.add(r);
            } else {
                old = mNotificationList.remove(index);
                mNotificationList.add(index, r);
                // Make sure we don't lose the foreground service state.
                if (old != null) {
                    notification.flags |=
                        old.notification.flags&Notification.FLAG_FOREGROUND_SERVICE;
                }
            }

            // Ensure if this is a foreground service that the proper additional
            // flags are set.
            if ((notification.flags&Notification.FLAG_FOREGROUND_SERVICE) != 0) {
                notification.flags |= Notification.FLAG_ONGOING_EVENT
                        | Notification.FLAG_NO_CLEAR;
            }

            if (notification.icon != 0) {
                StatusBarNotification n = new StatusBarNotification(pkg, id, tag,
                        r.uid, r.initialPid, notification);
                if (old != null && old.statusBarKey != null) {
                    r.statusBarKey = old.statusBarKey;
                    long identity = Binder.clearCallingIdentity();
                    try {
                        mStatusBar.updateNotification(r.statusBarKey, n);
                    }
                    finally {
                        Binder.restoreCallingIdentity(identity);
                    }
                } else {
                    long identity = Binder.clearCallingIdentity();
                    try {
                        r.statusBarKey = mStatusBar.addNotification(n);
                        mAttentionLight.pulse();
                    }
                    finally {
                        Binder.restoreCallingIdentity(identity);
                    }
                }
                sendAccessibilityEvent(notification, pkg);
            } else {
                if (old != null && old.statusBarKey != null) {
                    long identity = Binder.clearCallingIdentity();
                    try {
                        mStatusBar.removeNotification(old.statusBarKey);
                    }
                    finally {
                        Binder.restoreCallingIdentity(identity);
                    }
                }
            }

            // If we're not supposed to beep, vibrate, etc. then don't.
            if (((mDisabledNotifications & StatusBarManager.DISABLE_NOTIFICATION_ALERTS) == 0)
                    && (!(old != null
                        && (notification.flags & Notification.FLAG_ONLY_ALERT_ONCE) != 0 ))
                    && mSystemReady) {

                final AudioManager audioManager = (AudioManager) mContext
                .getSystemService(Context.AUDIO_SERVICE);
                // sound
                final boolean useDefaultSound =
                    (notification.defaults & Notification.DEFAULT_SOUND) != 0;
                if (useDefaultSound || notification.sound != null) {
                    Uri uri;
                    if (useDefaultSound) {
                        uri = Settings.System.DEFAULT_NOTIFICATION_URI;
                    } else {
                        uri = notification.sound;
                    }
                    boolean looping = (notification.flags & Notification.FLAG_INSISTENT) != 0;
                    int audioStreamType;
                    if (notification.audioStreamType >= 0) {
                        audioStreamType = notification.audioStreamType;
                    } else {
                        audioStreamType = DEFAULT_STREAM_TYPE;
                    }
                    mSoundNotification = r;
                    // do not play notifications if stream volume is 0
                    // (typically because ringer mode is silent).
                    if (audioManager.getStreamVolume(audioStreamType) != 0) {
                        long identity = Binder.clearCallingIdentity();
                        try {
                            mSound.play(mContext, uri, looping, audioStreamType);
                        }
                        finally {
                            Binder.restoreCallingIdentity(identity);
                        }
                    }
                }

                // vibrate
                final boolean useDefaultVibrate =
                    (notification.defaults & Notification.DEFAULT_VIBRATE) != 0;
                if ((useDefaultVibrate || notification.vibrate != null)
                        && audioManager.shouldVibrate(AudioManager.VIBRATE_TYPE_NOTIFICATION)) {
                    mVibrateNotification = r;

                    mVibrator.vibrate(useDefaultVibrate ? DEFAULT_VIBRATE_PATTERN
                                                        : notification.vibrate,
                              ((notification.flags & Notification.FLAG_INSISTENT) != 0) ? 0: -1);
                }
            }

            // this option doesn't shut off the lights

            // light
            // the most recent thing gets the light
            mLights.remove(old);
            if (mLedNotification == old) {
                mLedNotification = null;
            }
            //Slog.i(TAG, "notification.lights="
            //        + ((old.notification.lights.flags & Notification.FLAG_SHOW_LIGHTS) != 0));
            if ((notification.flags & Notification.FLAG_SHOW_LIGHTS) != 0) {
                mLights.add(r);
                updateLightsLocked();
            } else {
                if (old != null
                        && ((old.notification.flags & Notification.FLAG_SHOW_LIGHTS) != 0)) {
                    updateLightsLocked();
                }
            }
        }

        idOut[0] = id;
    }

    private void sendAccessibilityEvent(Notification notification, CharSequence packageName) {
        AccessibilityManager manager = AccessibilityManager.getInstance(mContext);
        if (!manager.isEnabled()) {
            return;
        }

        AccessibilityEvent event =
            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED);
        event.setPackageName(packageName);
        event.setClassName(Notification.class.getName());
        event.setParcelableData(notification);
        CharSequence tickerText = notification.tickerText;
        if (!TextUtils.isEmpty(tickerText)) {
            event.getText().add(tickerText);
        }

        manager.sendAccessibilityEvent(event);
    }

    private void cancelNotificationLocked(NotificationRecord r) {
        // status bar
        if (r.notification.icon != 0) {
            long identity = Binder.clearCallingIdentity();
            try {
                mStatusBar.removeNotification(r.statusBarKey);
            }
            finally {
                Binder.restoreCallingIdentity(identity);
            }
            r.statusBarKey = null;
        }

        // sound
        if (mSoundNotification == r) {
            mSoundNotification = null;
            long identity = Binder.clearCallingIdentity();
            try {
                mSound.stop();
            }
            finally {
                Binder.restoreCallingIdentity(identity);
            }
        }

        // vibrate
        if (mVibrateNotification == r) {
            mVibrateNotification = null;
            long identity = Binder.clearCallingIdentity();
            try {
                mVibrator.cancel();
            }
            finally {
                Binder.restoreCallingIdentity(identity);
            }
        }

        // light
        mLights.remove(r);
        if (mLedNotification == r) {
            mLedNotification = null;
        }
    }

    /**
     * Cancels a notification ONLY if it has all of the {@code mustHaveFlags}
     * and none of the {@code mustNotHaveFlags}.
     */
    private void cancelNotification(String pkg, String tag, int id, int mustHaveFlags,
            int mustNotHaveFlags) {
        EventLog.writeEvent(EventLogTags.NOTIFICATION_CANCEL, pkg, id, mustHaveFlags);

        synchronized (mNotificationList) {
            int index = indexOfNotificationLocked(pkg, tag, id);
            if (index >= 0) {
                NotificationRecord r = mNotificationList.get(index);

                if ((r.notification.flags & mustHaveFlags) != mustHaveFlags) {
                    return;
                }
                if ((r.notification.flags & mustNotHaveFlags) != 0) {
                    return;
                }

                mNotificationList.remove(index);

                cancelNotificationLocked(r);
                updateLightsLocked();
            }
        }
    }

    /**
     * Cancels all notifications from a given package that have all of the
     * {@code mustHaveFlags}.
     */
    boolean cancelAllNotificationsInt(String pkg, int mustHaveFlags,
            int mustNotHaveFlags, boolean doit) {
        EventLog.writeEvent(EventLogTags.NOTIFICATION_CANCEL_ALL, pkg, mustHaveFlags);

        synchronized (mNotificationList) {
            final int N = mNotificationList.size();
            boolean canceledSomething = false;
            for (int i = N-1; i >= 0; --i) {
                NotificationRecord r = mNotificationList.get(i);
                if ((r.notification.flags & mustHaveFlags) != mustHaveFlags) {
                    continue;
                }
                if ((r.notification.flags & mustNotHaveFlags) != 0) {
                    continue;
                }
                if (!r.pkg.equals(pkg)) {
                    continue;
                }
                canceledSomething = true;
                if (!doit) {
                    return true;
                }
                mNotificationList.remove(i);
                cancelNotificationLocked(r);
            }
            if (canceledSomething) {
                updateLightsLocked();
            }
            return canceledSomething;
        }
    }


    public void cancelNotification(String pkg, int id) {
        cancelNotificationWithTag(pkg, null /* tag */, id);
    }

    public void cancelNotificationWithTag(String pkg, String tag, int id) {
        checkIncomingCall(pkg);

        // Limit the number of notification requests, notify and cancel that
        // a package can post. The MAX_PACKAGE_NOTIFICATIONS doesn't work for
        // packages which notify and quickly cancel it and do this in an
        // iteration
        synchronized (mPackageInfo) {
            if (!"android".equals(pkg) && mPackageInfo.containsKey(pkg)) {
                final PackageRequestInfo pInfo = mPackageInfo.get(pkg);
                final long currentTime = SystemClock.elapsedRealtime();
                if ((currentTime - pInfo.lastPostTime) <= NOTIFICATION_REQUEST_INTERVAL) {
                    // Keep track of requests posted within last 30 seconds
                    pInfo.requestCount++;
                }
                else {
                    pInfo.requestCount = 1;
                    pInfo.lastPostTime = SystemClock.elapsedRealtime();
                }
            }
        }

        // Don't allow client applications to cancel foreground service notis.
        cancelNotification(pkg, tag, id, 0,
                Binder.getCallingUid() == Process.SYSTEM_UID
                ? 0 : Notification.FLAG_FOREGROUND_SERVICE);
    }

    public void cancelAllNotifications(String pkg) {
        checkIncomingCall(pkg);

        // Calling from user space, don't allow the canceling of actively
        // running foreground services.
        cancelAllNotificationsInt(pkg, 0, Notification.FLAG_FOREGROUND_SERVICE, true);
    }

    void checkIncomingCall(String pkg) {
        int uid = Binder.getCallingUid();
        if (uid == Process.SYSTEM_UID || uid == 0) {
            return;
        }
        try {
            ApplicationInfo ai = mContext.getPackageManager().getApplicationInfo(
                    pkg, 0);
            if (ai.uid != uid) {
                throw new SecurityException("Calling uid " + uid + " gave package"
                        + pkg + " which is owned by uid " + ai.uid);
            }
        } catch (PackageManager.NameNotFoundException e) {
            throw new SecurityException("Unknown package " + pkg);
        }
    }

    void cancelAll() {
        synchronized (mNotificationList) {
            final int N = mNotificationList.size();
            for (int i=N-1; i>=0; i--) {
                NotificationRecord r = mNotificationList.get(i);

                if ((r.notification.flags & (Notification.FLAG_ONGOING_EVENT
                                | Notification.FLAG_NO_CLEAR)) == 0) {
                    if (r.notification.deleteIntent != null) {
                        try {
                            r.notification.deleteIntent.send();
                        } catch (PendingIntent.CanceledException ex) {
                            // do nothing - there's no relevant way to recover, and
                            //     no reason to let this propagate
                            Slog.w(TAG, "canceled PendingIntent for " + r.pkg, ex);
                        }
                    }
                    mNotificationList.remove(i);
                    cancelNotificationLocked(r);
                }
            }

            updateLightsLocked();
        }
    }

    private void updateLights() {
        synchronized (mNotificationList) {
            updateLightsLocked();
        }
    }

    // lock on mNotificationList
    private void updateLightsLocked()
    {
        // Battery low always shows, other states only show if charging.
        if (mBatteryLow) {
            if (mBatteryCharging) {
                mBatteryLight.setColor(BATTERY_LOW_ARGB);
            } else {
                // Flash when battery is low and not charging
                mBatteryLight.setFlashing(BATTERY_LOW_ARGB, LightsService.LIGHT_FLASH_TIMED,
                        BATTERY_BLINK_ON, BATTERY_BLINK_OFF);
            }
        } else if (mBatteryCharging) {
            if (mBatteryFull) {
                mBatteryLight.setColor(BATTERY_FULL_ARGB);
            } else {
                mBatteryLight.setColor(BATTERY_MEDIUM_ARGB);
            }
        } else {
            mBatteryLight.turnOff();
        }

        // clear pending pulse notification if screen is on
        if (mScreenOn || mLedNotification == null) {
            mPendingPulseNotification = false;
        }

        // handle notification lights
        if (mLedNotification == null) {
            // get next notification, if any
            int n = mLights.size();
            if (n > 0) {
                mLedNotification = mLights.get(n-1);
            }
            if (mLedNotification != null && !mScreenOn) {
                mPendingPulseNotification = true;
            }
        }

        // we only flash if screen is off and persistent pulsing is enabled
        // and we are not currently in a call
        if (!mPendingPulseNotification || mScreenOn || mInCall) {
            mNotificationLight.turnOff();
        } else {
            int ledARGB = mLedNotification.notification.ledARGB;
            int ledOnMS = mLedNotification.notification.ledOnMS;
            int ledOffMS = mLedNotification.notification.ledOffMS;
            if ((mLedNotification.notification.defaults & Notification.DEFAULT_LIGHTS) != 0) {
                ledARGB = mDefaultNotificationColor;
                ledOnMS = mDefaultNotificationLedOn;
                ledOffMS = mDefaultNotificationLedOff;
            }
            if (mNotificationPulseEnabled) {
                // pulse repeatedly
                mNotificationLight.setFlashing(ledARGB, LightsService.LIGHT_FLASH_TIMED,
                        ledOnMS, ledOffMS);
            } else {
                // pulse only once
                mNotificationLight.pulse(ledARGB, ledOnMS);
            }
        }
    }

    // lock on mNotificationList
    private int indexOfNotificationLocked(String pkg, String tag, int id)
    {
        ArrayList<NotificationRecord> list = mNotificationList;
        final int len = list.size();
        for (int i=0; i<len; i++) {
            NotificationRecord r = list.get(i);
            if (tag == null) {
                if (r.tag != null) {
                    continue;
                }
            } else {
                if (!tag.equals(r.tag)) {
                    continue;
                }
            }
            if (r.id == id && r.pkg.equals(pkg)) {
                return i;
            }
        }
        return -1;
    }

    // This is here instead of StatusBarPolicy because it is an important
    // security feature that we don't want people customizing the platform
    // to accidentally lose.
    private void updateAdbNotification(boolean adbEnabled) {
        if (adbEnabled) {
            if ("0".equals(SystemProperties.get("persist.adb.notify"))) {
                return;
            }
            if (!mAdbNotificationShown) {
                NotificationManager notificationManager = (NotificationManager) mContext
                        .getSystemService(Context.NOTIFICATION_SERVICE);
                if (notificationManager != null) {
                    Resources r = mContext.getResources();
                    CharSequence title = r.getText(
                            com.android.internal.R.string.adb_active_notification_title);
                    CharSequence message = r.getText(
                            com.android.internal.R.string.adb_active_notification_message);

                    if (mAdbNotification == null) {
                        mAdbNotification = new Notification();
                        mAdbNotification.icon = com.android.internal.R.drawable.stat_sys_adb;
                        mAdbNotification.when = 0;
                        mAdbNotification.flags = Notification.FLAG_ONGOING_EVENT;
                        mAdbNotification.tickerText = title;
                        mAdbNotification.defaults = 0; // please be quiet
                        mAdbNotification.sound = null;
                        mAdbNotification.vibrate = null;
                    }

                    Intent intent = new Intent(
                            Settings.ACTION_APPLICATION_DEVELOPMENT_SETTINGS);
                    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
                            Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
                    // Note: we are hard-coding the component because this is
                    // an important security UI that we don't want anyone
                    // intercepting.
                    intent.setComponent(new ComponentName("com.android.settings",
                            "com.android.settings.DevelopmentSettings"));
                    PendingIntent pi = PendingIntent.getActivity(mContext, 0,
                            intent, 0);

                    mAdbNotification.setLatestEventInfo(mContext, title, message, pi);

                    mAdbNotificationShown = true;
                    notificationManager.notify(
                            com.android.internal.R.string.adb_active_notification_title,
                            mAdbNotification);
                }
            }

        } else if (mAdbNotificationShown) {
            NotificationManager notificationManager = (NotificationManager) mContext
                    .getSystemService(Context.NOTIFICATION_SERVICE);
            if (notificationManager != null) {
                mAdbNotificationShown = false;
                notificationManager.cancel(
                        com.android.internal.R.string.adb_active_notification_title);
            }
        }
    }

    private void updateNotificationPulse() {
        synchronized (mNotificationList) {
            updateLightsLocked();
        }
    }

    // ======================================================================
    @Override
    protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
        if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP)
                != PackageManager.PERMISSION_GRANTED) {
            pw.println("Permission Denial: can't dump NotificationManager from from pid="
                    + Binder.getCallingPid()
                    + ", uid=" + Binder.getCallingUid());
            return;
        }

        pw.println("Current Notification Manager state:");

        int N;

        synchronized (mToastQueue) {
            N = mToastQueue.size();
            if (N > 0) {
                pw.println("  Toast Queue:");
                for (int i=0; i<N; i++) {
                    mToastQueue.get(i).dump(pw, "    ");
                }
                pw.println("  ");
            }

        }

        synchronized (mNotificationList) {
            N = mNotificationList.size();
            if (N > 0) {
                pw.println("  Notification List:");
                for (int i=0; i<N; i++) {
                    mNotificationList.get(i).dump(pw, "    ", mContext);
                }
                pw.println("  ");
            }

            N = mLights.size();
            if (N > 0) {
                pw.println("  Lights List:");
                for (int i=0; i<N; i++) {
                    mLights.get(i).dump(pw, "    ", mContext);
                }
                pw.println("  ");
            }

            pw.println("  mSoundNotification=" + mSoundNotification);
            pw.println("  mSound=" + mSound);
            pw.println("  mVibrateNotification=" + mVibrateNotification);
            pw.println("  mDisabledNotifications=0x" + Integer.toHexString(mDisabledNotifications));
            pw.println("  mSystemReady=" + mSystemReady);
        }
    }
}

在871行有这句代码：uri = notification.sound;在886行有这句代码：mSound.play(mContext, uri, looping, audioStreamType);当时我就有点兴奋了，感觉这就是问题的关键，然后打log，发现这就是问题的关键，当notification正常发声音的时候，这个886行的代码走进来了，不发声音的时候这个代码没有走进来，所以我离问题的根源又进了一步。最后发现是包着这段代码的if语句中的判断引起的，所以我把if语句中的代码都打印出来，发现是mDisabledNotifications这个变量引起的，我就追踪这个mDisabledNotifications变量值的变化的地方。发现在467行有这段代码：

   // Don't start allowing notifications until the setup wizard has run once.
        // After that, including subsequent boots, init with notifications turned on.
        // This works on the first boot because the setup wizard will toggle this
        // flag at least once and we'll go back to 0 after that.
        if (0 == Settings.Secure.getInt(mContext.getContentResolver(),
                    Settings.Secure.DEVICE_PROVISIONED, 0)) {
            mDisabledNotifications = StatusBarManager.DISABLE_NOTIFICATION_ALERTS;
        }

研究以上的注释，发现原来google故意这么设置的，至于google为什么要这么设置，我没有深究，暂时没有想明白，但是这个这个初始化的时候必须要tsetup wizard （设置向导）运行一次，所以导致了值不对，所以这个notification就不响了。

在264行有这段代码对mDisabledNotification进行改变的：

    private StatusBarManagerService.NotificationCallbacks mNotificationCallbacks
            = new StatusBarManagerService.NotificationCallbacks() {

        public void onSetDisabled(int status) {
            synchronized (mNotificationList) {
                mDisabledNotifications = status;
                if ((mDisabledNotifications & StatusBarManager.DISABLE_NOTIFICATION_ALERTS) != 0) {
                    // cancel whatever's going on
                    long identity = Binder.clearCallingIdentity();
                    try {
                        mSound.stop();
                    }
                    finally {
                        Binder.restoreCallingIdentity(identity);
                    }

                    identity = Binder.clearCallingIdentity();
                    try {
                        mVibrator.cancel();
                    }
                    finally {
                        Binder.restoreCallingIdentity(identity);
                    }
                }
            }
        }

找到问题的根源了，太兴奋了，这个问题断断续续困扰了我3周，终于经过我3天地认真分析，把问题的根源找到了，要想解决就很简单了，可以在初始化的时候直接赋值为0就ok了！

       最后、886行mSound.play(mContext, uri, looping, audioStreamType);是NotificationPlayer类中的一个方法，在play（）方法中有一个线程，  mThread = new CmdThread();   mThread.start();线程中的run方法中有：case   PLAY：startSound(cmd);在startSound（）方法中又有一个线程：  mCompletionThread = new CreationAndCompletionThread(cmd);

mCompletionThread = new CreationAndCompletionThread(cmd);
                synchronized(mCompletionThread) {
                    mCompletionThread.start();
                    mCompletionThread.wait();
                }

在这个线程类中的run方法中：在这个线程中进行播放音乐的 ，真正的发声音也是通过Mediapaly来实现的：

 public void run() {
            Looper.prepare();
            mLooper = Looper.myLooper();
            synchronized(this) {
                AudioManager audioManager =
                    (AudioManager) mCmd.context.getSystemService(Context.AUDIO_SERVICE);
                try {
                    MediaPlayer player = new MediaPlayer();
                    player.setAudioStreamType(mCmd.stream);
                    player.setDataSource(mCmd.context, mCmd.uri);
                    player.setLooping(mCmd.looping);
                    player.prepare();
                    if ((mCmd.uri != null) && (mCmd.uri.getEncodedPath() != null)
                            && (mCmd.uri.getEncodedPath().length() > 0)) {
                        if (mCmd.looping) {
                            audioManager.requestAudioFocus(null, mCmd.stream,
                                    AudioManager.AUDIOFOCUS_GAIN);
                        } else {
                            audioManager.requestAudioFocus(null, mCmd.stream,
                                    AudioManager.AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK);
                        }
                    }
                    player.setOnCompletionListener(NotificationPlayer.this);
                    player.start();
                    if (mPlayer != null) {
                        mPlayer.release();
                    }
                    mPlayer = player;
                }
                catch (Exception e) {
                    Log.w(mTag, "error loading sound for " + mCmd.uri, e);
                }
                mAudioManager = audioManager;
                this.notify();
            }
            Looper.loop();
        }

 

        希望给读者留下点启发，转载请标明出处：http://blog.csdn.net/wdaming1986/article/details/7081787