public class MyService extends Service {
    String msg;
    public MyService() {
        msg = "Msg from MyService";
    }

    @Override
    public IBinder onBind(Intent intent) {
        return new MyBinder();
    }

    public class MyBinder extends Binder{
        public String getMsg(){
            return msg;
        }
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Intent service = new Intent(this, OtherService.class);
        startService(service);
        bindService(service, sc, Context.BIND_IMPORTANT);

        NotificationCompat.Builder builder = new NotificationCompat.Builder(getApplicationContext());
        //設定為0，通知欄不可見。設定為1，通知欄可見
        startForeground(0, builder.build());

        //返回此引數可以在Service因系統資源緊張被殺死的時候嘗試重啟
        return START_STICKY;
    }

    private ServiceConnection sc = new ServiceConnection() {
        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            //由於配置之後OtherService不在同一執行緒，無法進行互動
//            OtherService.OtherBinder otherBinder = (OtherService.OtherBinder) service;
//            Toast.makeText(MyService.this, otherBinder.getMsg(), Toast.LENGTH_SHORT).show();
            Toast.makeText(getApplicationContext(),"繫結MyService",Toast.LENGTH_SHORT).show();
        }

        @Override
        public void onServiceDisconnected(ComponentName name) {
            // 連接出現了異常斷開了，OtherService被殺掉了
            Toast.makeText(getApplicationContext(),"OtherService掛了",Toast.LENGTH_SHORT).show();
            Intent service = new Intent(MyService.this, OtherService.class);
            startService(service);
            bindService(service, sc, Context.BIND_IMPORTANT);
        }
    };
}