1.在需要的地方调用广播发送sendxxbroadcast()方法。

2.在activity中需要做四件事情

   1.定义发送广播的方法

     public void sendxxbroadcast(){

              Intent mintent=new Intent();

               mintent.setaction("xxx");

              sendBroaccast(mintent);

     }

  2.注册该广播

   public void registerBroadcastReceive()

            myintentfilter=  new IntentFilter()

           myintentfilter.setaction("xxx");

          registerReceive(mBroadcastReceive,myintentfilter);

     然后把该方法在activity的oncreate方法中初始化。

  3.定义广播接收类

     private BroatcastReceive mBroadcastReceive =new BroadcastReceive

@override

  public void onReceive(Context context,Intent intent)

   接到这个广播该做的操作。

  4.解除广播

private onDestroy()

unregisterReceiver(mBroadcastReceive);