Android BroadcastReceiver 简介

核心提示：IntentFilter intentFilter = new IntentFilter();intentFilter.addAction(String);--为BroadcastReceiver指定action，使之用于接收同action的广播registerReceiver(BroadcastReceiver,in

IntentFilter intentFilter = new IntentFilter();

intentFilter.addAction(String);--为BroadcastReceiver指定action，使之用于接收同action的广播registerReceiver(BroadcastReceiver,intentFilter);

一般：在onStart中注册，onStop中取消unregisterReceiver

发送广播消息：extends Service

指定广播目标Action：Intent Intent = new Intent(action-String)

--指定了此action的receiver会接收此广播

需传递参数(可选) putExtra();

发送：sendBroadcast(Intent);