Question

这是我的代码 MyService.java

public class MyService extends Service {
   @Override
    public void onCreate() {
        super.onCreate();
    }
    class BackgroundTask extends AsyncTask<String,Void,String>
    {
        //My database upload code
        }

    }

    private void ping() {
        try {

            BackgroundTask backgroundTask = new BackgroundTask();
            backgroundTask.execute(); //Running asynctask
        } catch (Exception e) {

        }
        scheduleNext();
    }

    private void scheduleNext() {
        mHandler.postDelayed(new Runnable() {
            public void run() {
                ping();
            }
        }, 300000);
    }


    public int onStartCommand(Intent intent, int x, int y) {
        mHandler = new android.os.Handler();
        ping();
        return START_STICKY;
    }


    @Override
    public void onDestroy() {
        super.onDestroy();
    }

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

autostart.java

public class autostart extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        intent=new Intent(context,MyService.class);
        context.startService(intent);
    }
}

在AndroidManifest.xml中，我有以下内容：

android:permission="android.permission.RECEIVE_BOOT_COMPLETED">
<receiver android:name=".autostart">
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED" />
            </intent-filter>
        </receiver>
<service android:name=".MyService"
            android:enabled="true"
            >
        </service>

我有时会在logcat中看到这个

02-04 19:57:25.125 10329-10377/com.example.pc.googlemaps I/GMPM: App measurement is starting up
02-04 19:57:25.135 10329-10377/com.example.pc.googlemaps E/GMPM: getGoogleAppId failed with status: 10
02-04 19:57:25.135 10329-10377/com.example.pc.googlemaps E/GMPM: Uploading is not possible. App measurement disabled

此服务有时无法正常运行。我从我的手机上检查应用程序管理器，我发现它运行但正如我所说，有时我的代码工作有时不起作用。例如，当我打开手机时，我检查App Manager并运行我的程序服务。我无法解决问题所在。我的意思是，似乎MyService总是在App Manager中运行，但有时运行的代码有时不会运行。我注意到，当我从我的手机上检查App Manager时，如果MyService是4-5 MB，它就不会运行，如果它运行13-15 MB。我不知道这是巧合。谢谢你的帮助

Answer 1

请检查出来这是我的服务，每隔15秒获取一次坐标并将其保存到SQLITE，每隔5分钟将所有保存的坐标发送到服务器，并每隔10分钟向服务器发送一个完整的坐标+地址。不要介意onDestroy方法的内容它只是我的私人图书馆

仅供参考：不要在onCreate方法中使用处理程序，这会导致您的应用无法响应
相信我，我在尝试之前尝试过而是使用AlarmManager来获得更好的性能

public class service extends Service{

private AlarmManager alarm;
private PendingIntent addData, sendData, fullData;

// run on another Thread to avoid crash
private Handler mHandler = new Handler();

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

@Override
public void onDestroy() {
    if(!App.User.GetUserCode().equals("")){
        App.DataFrame.InfoLog("Location is turned OFF");
        App.DataFrame.Off();

        mHandler.postDelayed(new Runnable() {
            @Override
            public void run() {
                stopAlarm();

                Intent stoploc = new Intent(service.this, LocationProvider.class);
                service.this.stopService(stoploc);

                stopForeground(true);
                stopSelf();

                App.User.Logout();
                App.Toast("Stopping Service");

            }
        }, 1000);

    }else{
        stopAlarm();

        Intent stoploc = new Intent(service.this, LocationProvider.class);
        service.this.stopService(stoploc);

        stopForeground(true);
        stopSelf();

        App.Toast("Stopping Service");
    }
    super.onDestroy();
}

public void stopAlarm(){
    alarm.cancel(addData);
    alarm.cancel(sendData);
    alarm.cancel(fullData);
}

@Override
public void onCreate() {
    App.Toast("Starting Services");

    alarm = (AlarmManager) getSystemService(App.GetContext().ALARM_SERVICE);

    Intent intent = new Intent(this, CoorReceiver.class);
    addData = PendingIntent.getBroadcast(this, 0, intent.putExtra("Code", 0), PendingIntent.FLAG_UPDATE_CURRENT);
    sendData =  PendingIntent.getBroadcast(this, 1, intent.putExtra("Code", 1), PendingIntent.FLAG_UPDATE_CURRENT);
    fullData =  PendingIntent.getBroadcast(this, 2, intent.putExtra("Code", 2), PendingIntent.FLAG_UPDATE_CURRENT);
    alarm.setInexactRepeating(AlarmManager.RTC_WAKEUP, 15000, 15000, addData);
    alarm.setInexactRepeating(AlarmManager.RTC_WAKEUP, 30000, 30000, sendData);
    alarm.setInexactRepeating(AlarmManager.RTC_WAKEUP, 600000, 600000, fullData);
}

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    Intent intent2 = new Intent(this, MainActivity.class);

    intent2.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
    PendingIntent pendIntent = PendingIntent.getActivity(this, 0, intent2, 0);

    Notification noti = new Notification.Builder(getApplicationContext())
            .setContentTitle("Imagine")
            .setContentText("Service is Running")
            .setSmallIcon(R.drawable.ic_launcher)
            .setContentIntent(pendIntent)
            .build();
    startForeground(1234, noti);
    return START_STICKY;
}
}

服务有时不起作用

1 个答案: