Android系统提供Notification和NotificationManagement两个类来管理实现通知，通过这两个类我们可以显示广播信息的内容，还可以设置通知的铃声、震动、闪光灯。通过Activity 类中的getSystemService这个方法获取NotificationManagement，再实例化Notification，最后再用NotificationManagement发送出去即可。注：获取Notification对象时，android api 11之后已经不推荐使用 notification.setLatestEventInfo()方法了，推荐使用 Notification.Builder 来实例化Notification。样例代码如下:

package com.yeetrack.broadcast;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.app.Activity;import android.app.Notification;import android.app.NotificationManager;import android.app.PendingIntent;import android.content.Intent;import android.graphics.Color;public class MainActivity extends Activity {    private Button button1;    private Button button2;     private Notification notification;    private NotificationManager notificationManager;    private static final int ID = 1;    @Override    protected void onCreate(Bundle savedInstanceState)     {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        button1 = (Button)findViewById(R.id.button1Id);        button2 = (Button)findViewById(R.id.button2Id);        notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);        notification = new Notification();        notification.icon = R.drawable.ic_launcher;        notification.tickerText = "我的通知";        notification.when = System.currentTimeMillis();        OnClickListener onClickListener = new OnClickListener()        {            @Override            public void onClick(View v)            {                switch( v.getId())                {                case R.id.button1Id:                    Intent intent = new Intent(MainActivity.this, MainActivity.class);                    PendingIntent pendingIntent = PendingIntent.getActivity(MainActivity.this, 0, intent, 0);                    long[] vibrate = {0,100,200,300};                    Notification.Builder builder = new Notification.Builder(MainActivity.this)                        .setContentIntent(pendingIntent)                        .setSmallIcon(R.drawable.ic_launcher)                        .setTicker("我的消息")                        .setWhen(System.currentTimeMillis())                        .setContentTitle("标题")                        .setContentText("内容")                        .setSound(Uri.parse(Environment.getExternalStorageDirectory().getPath()+"/sound.mp3"))                        .setVibrate(vibrate)                        .setLights(Color.RED, 500, 500);                    notification = builder.build();                    notificationManager.notify(ID, notification);                    break;                case R.id.button2Id:                    notificationManager.cancel(ID);                    break;                }        }    };    button1.setOnClickListener(onClickListener);    button2.setOnClickListener(onClickListener);}}