自定义通知栏布局

效果图:

通知栏布局custom_notification.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout  android:id="@+id/ll_root" xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="62dp" android:background="#282828" android:gravity="center_vertical" android:orientation="horizontal" android:paddingLeft="8dp" android:paddingRight="8dp">

    <ImageView  android:layout_width="50dp" android:layout_height="50dp" android:src="@drawable/icon_notification"/>

    <LinearLayout  android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center_vertical" android:orientation="vertical">

        <TextView  android:id="@+id/tv_content_title" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="歌曲名" android:textColor="#FFFFFF"/>

        <TextView  android:id="@+id/tv_content_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="歌手" android:textColor="#77FFFFFF"/>
    </LinearLayout>

    <Button  android:id="@+id/btn_pre" android:layout_width="30dp" android:layout_height="30dp" android:background="@drawable/icon_notification_pre"/>

    <Button  android:id="@+id/btn_next" android:layout_width="30dp" android:layout_height="30dp" android:layout_marginLeft="16dp" android:layout_marginRight="8dp" android:background="@drawable/icon_notification_next"/>
</LinearLayout>     

MainActivity.java

package blog.csdn.net.mchenys.mycustomnotification;

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.NotificationCompat;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.RemoteViews;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private static final int CODE_NOTIFICATION = 200; //构建PaddingIntent的请求码,可用于关闭通知
    private NotificationManager mNotificationManager; //通知管理器
    private static final int NOTIFICATION_PRE = 1; //上一首
    private static final int NOTIFICATION_NEXT = 2; //下一首
    private static final int NOTIFICATION_OPEN = 3; //打开歌曲

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        findViewById(R.id.btn_send).setOnClickListener(this);
        findViewById(R.id.btn_cancle).setOnClickListener(this);
        mNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.btn_send:
                createCustomNotification();
                break;
            case R.id.btn_cancle:
                mNotificationManager.cancel(CODE_NOTIFICATION);
                break;
        }
    }

    private void createCustomNotification() {
        Intent intent = new Intent(this, MusicPlayerActivity.class);
        //如果第二次获取并且请求码相同,如果原来已解决创建了这个PendingIntent,则复用这个类,并更新intent
        int flag = PendingIntent.FLAG_UPDATE_CURRENT;
        PendingIntent contentIntent = PendingIntent.getActivity(this, 3, intent, flag);
        NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
                .setSmallIcon(R.drawable.icon_notification)
                .setTicker("当前正在播放..")
                .setWhen(System.currentTimeMillis())
                .setContentTitle("歌曲名")
                .setContentText("歌手") //以上的设置是在为了兼容3.0之前的版本
                .setContentIntent(contentIntent)
                .setContent(getRemoteView()); //自定义通知栏view的api是在3.0之后生效
        Notification notification = builder.build();
        //打开通知
        mNotificationManager.notify(CODE_NOTIFICATION, notification);
    }

    /** * 创建RemoteViews,3.0之后版本使用 * * @return */
    public RemoteViews getRemoteView() {
        RemoteViews remoteViews = new RemoteViews(getPackageName(), R.layout.custom_notification);
        remoteViews.setTextViewText(R.id.tv_content_title, "歌曲名");
        remoteViews.setTextViewText(R.id.tv_content_text, "歌手");
        //打开上一首
        remoteViews.setOnClickPendingIntent(R.id.btn_pre, getClickPendingIntent(NOTIFICATION_PRE)); 
        //打开下一首
        remoteViews.setOnClickPendingIntent(R.id.btn_next, getClickPendingIntent(NOTIFICATION_NEXT)); 
        //点击整体布局时,打开播放器
        remoteViews.setOnClickPendingIntent(R.id.ll_root, getClickPendingIntent(NOTIFICATION_OPEN));
        return remoteViews;
    }

    /** * 获取点击自定义通知栏上面的按钮或者布局时的延迟意图 * * @param what 要执行的指令 * @return */
    public PendingIntent getClickPendingIntent(int what) {
        Intent intent = new Intent(this, MusicPlayerActivity.class);
        intent.putExtra("cmd", what);
        int flag = PendingIntent.FLAG_UPDATE_CURRENT;
        PendingIntent clickIntent = PendingIntent.getActivity(this, what, intent, flag );
        return clickIntent;
    }
}

MusicPlayerActivity.java

/** * Created by mChenys on 2016/4/4. */
public class MusicPlayerActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        int what = getIntent().getIntExtra("cmd", -1);
        TextView textView = new TextView(this);
        textView.setGravity(Gravity.CENTER);
        textView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 25);
        textView.setText("接收到通知的请求:" + what);
        setContentView(textView);
    }
}

运行效果:

点击上一首:

点击下一首:

点击整体布局: