安卓学习UI组件-Notifications-通知栏-四种案例

案例：

普通视图的通知，使用了Intent传递信息,点击通知，打开一个Activity

 

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.administrator.myapplication.MainActivity">

    <Button
        android:id="@+id/button_normal_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:onClick="sendNotification1"
        android:text="发送一个普通视图的通知" />

    <Button
        android:id="@+id/button_big_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentStart="true"
        android:layout_below="@+id/button_normal_view"
        android:onClick="sendNotification2"
        android:text="发送一个大视图的通知" />

    <Button
        android:id="@+id/button_progres"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignEnd="@+id/button_big_view"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_alignRight="@+id/button_big_view"
        android:layout_below="@+id/button_big_view"
        android:onClick="sendNotification3"
        android:text="发送一个进度条通知" />

    <Button
        android:id="@+id/button_custom"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignEnd="@+id/button_progres"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_alignRight="@+id/button_progres"
        android:layout_below="@+id/button_progres"
        android:onClick="sendNotification4"
        android:text="发送一个自定义视图的通知" />
</RelativeLayout>

activity_main2.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.administrator.myapplication.MainActivity2">

    <TextView
        android:id="@+id/msg"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="妈的智障！" />
</RelativeLayout>

MainActivity2.java

package com.example.administrator.myapplication;

import android.app.NotificationManager;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.widget.TextView;

public class MainActivity2 extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
//打开界面后取消指定ID通知
        NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        nm.cancel(MainActivity.NID_1);

        String msg = getIntent().getStringExtra("msg");
        TextView tv = (TextView) findViewById(R.id.msg);
        tv.setText(msg);
    }

}

自定义视图布局文件custom_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:orientation="horizontal">


    <ImageView
        android:id="@+id/imageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:adjustViewBounds="true"
        android:maxHeight="64dp"
        android:maxWidth="64dp"
        android:src="@mipmap/ic_launcher" />

    <TextView
        android:id="@+id/textView_song_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="歌曲名称。。。" />

    <Button
        android:id="@+id/button_play"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="播放" />

    <Button
        android:id="@+id/button_next"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="下一首" />
</LinearLayout>

MainActivity.java

package com.example.administrator.myapplication;

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;

import android.support.v4.app.NotificationCompat;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.widget.RemoteViews;

//通知：Notifications
public class MainActivity extends ActionBarActivity {


    public static final int NID_1 = 0x1;
    public static final int NID_2 = 0x2;
    public static final int NID_3 = 0x3;
    public static final int NID_4 = 0x4;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    //发送一个普通的通知
    public void sendNotification1(View v) {
        // Notification n=new Notification(); API11之前创建通知的方式，被弃用
        //API11之后使用
        // Notification.Builder builder=new Notification.Builder(this);
        //v4支持包
        NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
        //设置相关的属性
        builder.setSmallIcon(R.mipmap.ic_launcher);//设置图标
        builder.setContentTitle("你有一条新消息");
        builder.setContentText("龙族还未更新，敬请期待，好好学习，天天向上，2016更任性");
        // builder1.setOngoing(true);//设置为常驻通知  常驻通知不可清楚掉
        // builder1.setAutoCancel(true);//自动清除通知
        builder.setDefaults(Notification.DEFAULT_ALL);
        builder.setNumber(10);
        builder.setTicker("新消息");

        //定义一个意图，当点击通知时要打开一个界面（Activity）
        Intent intent = new Intent(this, MainActivity2.class);

        intent.putExtra("msg", "龙族 ");
        //参数（上下文，请求编码（没用），意图，创建PendingIntent的方式）
       /* PendingIntent.FLAG_CANCEL_CURRENT;  取消当前的pi，创建新的
        PendingIntent.FLAG_NO_CREATE; 如果有就使用，没有就不创建
        PendingIntent.FLAG_ONE_SHOT;只是用一次
        PendingIntent.FLAG_UPDATE_CURRENT;如果有，更新Intent,在使用，没有就创建*/
        PendingIntent pi = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
        //设置通知的事件
        builder.setContentIntent(pi);


        //根据设置好的属性 创建通知对象
        Notification n = builder.build();
        //获取系统的通知管理器 然后发送通知
        NotificationManager nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        nm.notify(NID_1, n);

    }

    public void sendNotification2(View v) {
        NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
        //设置相关的属性
        builder.setSmallIcon(R.mipmap.ic_launcher);//设置图标
      /*  builder.setContentTitle("新消息");
        builder.setContentText("太乙仙魔录之灵山纪");*/
        builder.setTicker("有消息");
        builder.setDefaults(Notification.DEFAULT_ALL);


        //设置大视图的样式
        NotificationCompat.InboxStyle style = new NotificationCompat.InboxStyle();
        style.setBigContentTitle("雁城雪");

        style.addLine("十步杀一人，千里不留名。");
        style.addLine("事了拂衣去，深藏身与名。");
        style.addLine("一行白鹭上青天。");
        style.setSummaryText("作者：小肥");

        builder.setNumber(5);
        builder.setStyle(style);

        Notification n = builder.build();
        NotificationManager nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        nm.notify(NID_2, n);


        //   builder.setStyle();
    }


    //显示进度条的通知
    public void sendNotification3(View v) {
        final NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
        //设置相关的属性
        builder.setSmallIcon(R.mipmap.ic_launcher);//设置图标
        builder.setContentTitle("更新中。。。");
        builder.setContentText("正在由装逼模式更新至牛逼模式");
        builder.setTicker("有消息");
        //  builder.setDefaults(Notification.DEFAULT_ALL);
        builder.setProgress(100, 5, false);//false代表确定的进度
        final NotificationManager nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        //根据设置好的属性 创建通知对象
        Notification n = builder.build();
        //获取系统的通知管理器 然后发送通知
        nm.notify(NID_3, n);

        //模拟更新的线程

        new Thread(new Runnable() {
            @Override
            public void run() {

                for (int progress = 0; progress <= 100; progress += 5) {
                    builder.setProgress(100, progress, false);
                    nm.notify(NID_3, builder.build());
                    try {
                        Thread.sleep(500);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
                builder.setProgress(0, 0, true);
                // builder.setProgress(0, 0, false);
                builder.setContentText("更新完成，由于机主逼格不够，正在返回逗比模式");
                nm.notify(NID_3, builder.build());
            }
        }).start();
    }


    public void sendNotification4(View v) {
        NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
        //设置相关的属性
        builder.setSmallIcon(R.mipmap.ic_launcher);//设置图标
        builder.setOngoing(true);
       /* builder.setContentTitle("更新中。。。");
        builder.setContentText("正在由装逼模式更新至牛逼模式");
        builder.setTicker("有消息");*/
        //创建一个远程的视图
        RemoteViews views = new RemoteViews(getPackageName(), R.layout.custom_layout);
        views.setTextViewText(R.id.textView_song_name, "第一滴泪");
        //    views.setImageViewResource();
        views.setTextViewText(R.id.button_play, "暂停");

        //  views.setOnClickPendingIntent();用来设置按钮的单击事件，启动服务


        builder.setContent(views);
        builder.setTicker("小肥音乐");

        NotificationManager nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        //根据设置好的属性 创建通知对象
        Notification n = builder.build();
        //获取系统的通知管理器 然后发送通知
        nm.notify(NID_4, n);


    }
}