播音传送数据机制

广播传送数据机制

1. 先注册广播  ：（注意：注册广播要在接收广播之前）

MyReceiver receiver = new MyReceiver();IntentFilter filter = new IntentFilter();// 创建IntentFilter对象filter.addAction("android.intent.action.test");registerReceiver(receiver, filter);

其中MyReceiver为广播接收器，可以同时注册多个广播registerReceiver(receiver, filter);只要filter.addAction("不一样的标识");

2.广播注册完后要发送广播

  Intent intent = new Intent();  intent.setAction("android.intent.action.test");// action与接收器相同  Bundle bundle = new Bundle();  bundle.putSerializable("showAllFriends", list);//这里可以传送数据

  intent.putExtras(bundle);  sendBroadcast(intent);

3.接收广播

/** * 广播接收器 *  * @author Administrator *  */public static class MyReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) { Bundle bundle = intent.getExtras();    

 bundle.getSerializable("showAllFriends"));System.out.println("---------------------------------");}public MyReceiver() {System.out.println("MyReceiver");// 构造函数，做一些初始化工作，本例中无任何作用}}