android的意图

  IntentFilter filter = new IntentFilter();
  filter.addAction(WifiManager.ACTION_PICK_WIFI_NETWORK);
  registerReceiver(new WifiReceiver(), filter);

 Intent intent = new Intent();
    intent.setAction("cn.programmer.CUSTOM_INTENT");
      intent.setComponent( new ComponentName( "com.app.myapplication" ,
        "com.app.myapplication.MyReceiver") );//系统高级点的需要指明包名
    sendBroadcast(intent);