在service代码里实现广播接收者

来源：互联网发布：中国发达国家知乎编辑：程序博客网时间：2024/04/30 15:22

service里：

// 初始化广播接收器private MyBroadcastReceiver receviver = null;private void initBroadcastReceiver() {// 创建一个IntentFilter对象，将其action指定为BluetoothDevice.ACTION_FOUNDIntentFilter intentFilter = new IntentFilter();intentFilter.addAction(Constant.RELOAD_DATA);intentFilter.addAction(Constant.RELOAD_OPEN_DOORS_DISTANCE);receviver = new MyBroadcastReceiver();// 注册广播接收器registerReceiver(receviver, intentFilter);}private class MyBroadcastReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) {String action = intent.getAction();if (action.equals(Constant.RELOAD_DATA)) {// 重新加载数据库System.out.println("get RELOAD_DATA");getDoorInfFromDB();return;} else if (action.equals(Constant.RELOAD_OPEN_DOORS_DISTANCE)) {// 这里得到实际距离，要将实际距离进行转化/*** 0========-5* 10=======-85*/openDistance = getSharedPreferences(Constant.NAME_CONFIG, Context.MODE_PRIVATE).getInt(Constant.KEY_DOOR_DISTANCE, -85);if (openDistance > -50) {openDistance = -50;}return;} else if (action.equals(Constant.RELOAD_OPEN_DOORS_DISTANCE_DEF)) {SharedPreferences preferences = getSharedPreferences(Constant.NAME_CONFIG, Context.MODE_PRIVATE);openDistance = preferences.getInt(Constant.KEY_DOOR_DISTANCE_DEFAULT, -75);return;}}}

在activity里：

// 发送广播去重新加载数据broadcastUpdate(Constant.RELOAD_DATA);

private void broadcastUpdate(final String action) {final Intent intent = new Intent(action);sendBroadcast(intent);}

在onDestroy方法里要解除注册：

if (receviver != null) {unregisterReceiver(receviver);}

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