<receiver android:name="MyBroadCast">  <intent-filter>  <action android:name="hb.com.BroadCastDemo.MYBROADCAST"/>  </intent-filter>  </receiver> 

btn.setOnClickListener(new Button.OnClickListener(){      @Override  public void onClick(View v) {          System.out.println("onClick");          Intent intent = new Intent();          intent.setAction(MYBROADCAST);          sendBroadcast(intent);      }  });  

public class MyBroadCast extends BroadcastReceiver {      @Override  public void onReceive(Context context, Intent intent) {          System.out.println("onReceive");      }  }  

public class BroadCastDemo extends Activity {      Notification nf;      NotificationManager nm;  private static final String MYBROADCAST = "hb.com.BroadCastDemo.MYBROADCAST";  private static final int MYID = 1;      @Override  public void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);          setContentView(R.layout.main);  //得到NotificationManager对象          String service = this.NOTIFICATION_SERVICE;          nm = (NotificationManager)this.getSystemService(service);         //实例化Notification          nf = new Notification();          nf.icon = R.drawable.icon;          nf.tickerText = "notification test";          nf.when = System.currentTimeMillis();  

        findViewById(R.id.broadCastBtn).setOnClickListener(new Button.OnClickListener(){              @Override  public void onClick(View v) {                  Intent intent = new Intent();  //发送自定义的广播类型                  intent.setAction(MYBROADCAST);                  PendingIntent pi = PendingIntent.getBroadcast(BroadCastDemo.this, 0, intent, 0);                  nf.setLatestEventInfo(BroadCastDemo.this, "my title", "my content", pi);                  nm.notify(MYID, nf);              }          });  

        findViewById(R.id.cancelCastBtn).setOnClickListener(new Button.OnClickListener(){              @Override  public void onClick(View v) {  //取消广播                  nm.cancel(MYID);              }          });      }  }

findViewById(R.id.alarmManagerOpen).setOnClickListener(new Button.OnClickListener(){      @Override  public void onClick(View v) {          Intent intent = new Intent();          intent.setAction(MYBROADCAST);          PendingIntent pi = PendingIntent.getBroadcast(BroadCastDemo.this, 0, intent, 0);  long time = System.currentTimeMillis();          AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);          am.setRepeating(AlarmManager.RTC_WAKEUP, time, 8 * 1000, pi);      }  });