不推荐使用android后如何编写新的处理程序（）

我有一个网络状态更改服务

public class MyService extends Service {
    @Override
    public void onCreate() {
        super.onCreate();
    }

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        handler.post(periodicUpdate);
        return START_STICKY;
    }

    public boolean isOnline(Context c) {
        ConnectivityManager cm = (ConnectivityManager) c.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo ni = cm.getActiveNetworkInfo();

        return ni != null && ni.isConnectedOrConnecting();
    }



    Handler handler = new Handler();
    private Runnable periodicUpdate = new Runnable() {
        @Override
        public void run() {
            handler.postDelayed(periodicUpdate, 1000 - SystemClock.elapsedRealtime() % 1000);
            Intent broadcastIntent = new Intent();
            broadcastIntent.setAction(MainActivity.BroadcastStringForAction);
            broadcastIntent.putExtra("online_status", ""+isOnline(MyService.this));
            sendBroadcast(broadcastIntent);
        }
    }; 
}

和主要活动

public class MainActivity extends AppCompatActivity {
    public static final String BroadcastStringForAction = "checkInternet";
    private static final String TAG = "===============>";
    IntentFilter mInterFilter;
    TextView txtStatus;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        txtStatus = findViewById(R.id.txtStatus);

        mInterFilter = new IntentFilter();
        mInterFilter.addAction(BroadcastStringForAction);
        Intent serviceIntent = new Intent(this, MyService.class);
        startService(serviceIntent);
        if (new MyService().isOnline(getApplicationContext()))
            online();
        else
            offline();
    }

    public BroadcastReceiver myReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            if (intent.getAction().equalsIgnoreCase(BroadcastStringForAction)){
                if (intent.getStringExtra("online_status").equalsIgnoreCase("true")){
                    online();
                }else {
                    offline();
                }
            }
        }
    };

    private void online(){
        txtStatus.setText(("ONLINE"));
        txtStatus.setBackgroundColor(ContextCompat.getColor(this, R.color.blue));
    }

    private void offline(){
        txtStatus.setText(("OFFLINE"));
        txtStatus.setBackgroundColor(ContextCompat.getColor(this, R.color.red));
    }

    @Override
    protected void onStart() {
        super.onStart();
        registerReceiver(myReceiver, mInterFilter);
    }

    @Override
    protected void onPause() {
        super.onPause();
        unregisterReceiver(myReceiver);
    }

    @Override
    protected void onResume() {
        super.onResume();
        registerReceiver(myReceiver, mInterFilter);
    }
}

这里Handler=newhandler（）；不赞成。从中找到解决方案

新处理程序（Looper.getMainLooper（））.postDelayed（newrunnable（））{ @凌驾 公开募捐{ //你的代码 } }, 3000);

但我不能用那个

这里介绍如何在服务的onStartCommand中使用periodicUpdate。

您所说的“不能使用”是什么意思？这正是你应该使用的。