广播接收套路

1.买个收音机

public class SDCardStatusReceiver extends BroadcastReceiver

2.装电池

3.调频道 ,意图过滤器

</receiver>

4.逻辑

@Override    public void onReceive(Context context, Intent intent) {        Toast.makeText(context, "外部存储卡已被拔出,微信头像和朋友圈功能暂不可用", 0).show();    }