Android BroadcastReceiver广播简单使用

1.创建 BroadcastReceiver

/**  * 广播监听  */ private class ScrosReceive extends BroadcastReceiver {      @Override     public void onReceive(Context context, Intent intent) {         Log.e("BroadcastReceiver" ,"第一个页面，监听到广播，做相应的数据处理");         scros = intent.getIntExtra("scros", 0);         textView.setText("这学期的综合成绩：scros = " + scros);     } }      

2.在MainActivity中实例化广播与注册广播

private ScrosReceive scrosReceive; scrosReceive = new ScrosReceive(); //注册广播 //ruidee.mainActivity 是广播的Action，可自定义 IntentFilter intentFilter = new IntentFilter("ruidee.mainActivity"); registerReceiver(scrosReceive, intentFilter);      

btnSendBrocast.setOnClickListener(new View.OnClickListener() {     @Override     public void onClick(View v) {         Intent intent_brocast = new Intent();         intent_brocast.setAction("ruidee.mainActivity");         intent_brocast.putExtra("scros" ,120);         //发送广播调用 sendBroadcast（Intent intent）方法         sendBroadcast(intent_brocast);         Log.e("BroadcastReceiver" ,"第二个页面，发送广播");     } });