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So starten Sie den Dienst neu, nachdem die App von den letzten Aufgaben beendet wurde

Ich habe einen Dienst erstellt, um den aktuellen Standort des Geräts in regelmäßigen Abständen abzurufen. Ich möchte, dass der Dienst im Hintergrund ausgeführt wird, auch wenn die App aus kürzlich geöffneten Apps gelöscht wird. Derzeit läuft der Dienst nur im Hintergrund, bis die App in den kürzlich geöffneten Apps vorhanden ist. Er wird jedoch sofort beendet, wenn die App abgehakt wird (oder auf andere Weise beendet wird). Ich habe alle möglichen Hilfsmittel aus dem Stack-Überlauf ausprobiert kann das nicht lösen. Bitte helfen Hier ist mein Code für den Dienst.

package com.packr.services;

import Android.app.AlarmManager;
import Android.app.PendingIntent;
import Android.app.Service;
import Android.content.Context;
import Android.content.Intent;
import Android.content.pm.ServiceInfo;
import Android.location.Location;
import Android.os.Bundle;
import Android.os.IBinder;
import Android.os.SystemClock;
import Android.support.annotation.Nullable;
import Android.util.Log;
import Android.widget.Toast;

import com.google.Android.gms.common.ConnectionResult;
import com.google.Android.gms.common.api.GoogleApiClient;
import com.google.Android.gms.location.LocationListener;
import com.google.Android.gms.location.LocationRequest;
import com.google.Android.gms.location.LocationServices;

import Java.text.DateFormat;
import Java.util.Date;

/**
 * Created by Arindam on 11-Dec-15.
 */
public class LocationService extends Service implements
        GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {
    protected static final String TAG = "packrMATE";
    /**
     * The desired interval for location updates. Inexact. Updates may be more or less frequent.
     */
    public static final long UPDATE_INTERVAL_IN_MILLISECONDS = 10000;

    /**
     * The fastest rate for active location updates. Exact. Updates will never be more frequent
     * than this value.
     */
    public static final long FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS =
            UPDATE_INTERVAL_IN_MILLISECONDS / 2;

    // Keys for storing activity state in the Bundle.
    protected final static String REQUESTING_LOCATION_UPDATES_KEY = "requesting-location-updates-key";
    protected final static String LOCATION_KEY = "location-key";
    protected final static String LAST_UPDATED_TIME_STRING_KEY = "last-updated-time-string-key";

    /**
     * Provides the entry point to Google Play services.
     */
    protected GoogleApiClient mGoogleApiClient;

    /**
     * Stores parameters for requests to the FusedLocationProviderApi.
     */
    protected LocationRequest mLocationRequest;

    /**
     * Represents a geographical location.
     */
    protected Location mCurrentLocation;

    /**
     * Tracks the status of the location updates request. Value changes when the user presses the
     * Start Updates and Stop Updates buttons.
     */
    protected Boolean mRequestingLocationUpdates;

    /**
     * Time when the location was updated represented as a String.
     */
    protected String mLastUpdateTime;

    @Override
    public void onCreate() {
        Log.d(TAG,"Service started");
        super.onCreate();
        mRequestingLocationUpdates = false;
        mLastUpdateTime = "";

        // Kick off the process of building a GoogleApiClient and requesting the LocationServices
        // API.
        buildGoogleApiClient();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.d(TAG,"Service fucking started");
        mGoogleApiClient.connect();
        if (mGoogleApiClient.isConnected()) {
            startLocationUpdates();
        }
        return Service.START_STICKY;

    }

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

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

    @Override
    public void onConnected(Bundle bundle) {
        Log.i(TAG, "Connected to GoogleApiClient");

        // If the initial location was never previously requested, we use
        // FusedLocationApi.getLastLocation() to get it. If it was previously requested, we store
        // its value in the Bundle and check for it in onCreate(). We
        // do not request it again unless the user specifically requests location updates by pressing
        // the Start Updates button.
        //
        // Because we cache the value of the initial location in the Bundle, it means that if the
        // user launches the activity,
        // moves to a new location, and then changes the device orientation, the original location
        // is displayed as the activity is re-created.
        if (mCurrentLocation == null) {
            mCurrentLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
            mLastUpdateTime = DateFormat.getTimeInstance().format(new Date());
            Toast.makeText(getApplicationContext(),"Hello Babe",Toast.LENGTH_SHORT).show();
        }

        // If the user presses the Start Updates button before GoogleApiClient connects, we set
        // mRequestingLocationUpdates to true (see startUpdatesButtonHandler()). Here, we check
        // the value of mRequestingLocationUpdates and if it is true, we start location updates.
            startLocationUpdates();
    }

    @Override
    public void onConnectionSuspended(int i) {
        // The connection to Google Play services was lost for some reason. We call connect() to
        // attempt to re-establish the connection.
        Log.i(TAG, "Connection suspended");
        mGoogleApiClient.connect();
    }

    @Override
    public void onLocationChanged(Location location) {
        mCurrentLocation = location;
        mLastUpdateTime = DateFormat.getTimeInstance().format(new Date());
        Toast.makeText(this, String.valueOf(location.getLatitude() + " "+ String.valueOf(location.getLongitude())),
                Toast.LENGTH_SHORT).show();
        Log.e(TAG,"fuck man location found");
    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {
        // Refer to the javadoc for ConnectionResult to see what error codes might be returned in
        // onConnectionFailed.
        Log.i(TAG, "Connection failed: ConnectionResult.getErrorCode() = " + connectionResult.getErrorCode());
    }

    protected synchronized void buildGoogleApiClient() {
        Log.i(TAG, "Building GoogleApiClient");
        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();
        createLocationRequest();

    }
    /**
     * Sets up the location request. Android has two location request settings:
     * {@code ACCESS_COARSE_LOCATION} and {@code ACCESS_FINE_LOCATION}. These settings control
     * the accuracy of the current location. This sample uses ACCESS_FINE_LOCATION, as defined in
     * the AndroidManifest.xml.
     * <p/>
     * When the ACCESS_FINE_LOCATION setting is specified, combined with a fast update
     * interval (5 seconds), the Fused Location Provider API returns location updates that are
     * accurate to within a few feet.
     * <p/>
     * These settings are appropriate for mapping applications that show real-time location
     * updates.
     */
    protected void createLocationRequest() {
        mLocationRequest = new LocationRequest();

        // Sets the desired interval for active location updates. This interval is
        // inexact. You may not receive updates at all if no location sources are available, or
        // you may receive them slower than requested. You may also receive updates faster than
        // requested if other applications are requesting location at a faster interval.
        mLocationRequest.setInterval(UPDATE_INTERVAL_IN_MILLISECONDS);

        // Sets the fastest rate for active location updates. This interval is exact, and your
        // application will never receive updates faster than this value.
        mLocationRequest.setFastestInterval(FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS);

        mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    }

    /**
     * Requests location updates from the FusedLocationApi.
     */
    protected void startLocationUpdates() {
        // The final argument to {@code requestLocationUpdates()} is a LocationListener
        // (http://developer.Android.com/reference/com/google/Android/gms/location/LocationListener.html).
        LocationServices.FusedLocationApi.requestLocationUpdates(
                mGoogleApiClient, mLocationRequest, this);
    }
    /**
     * Removes location updates from the FusedLocationApi.
     */
    protected void stopLocationUpdates() {
        // It is a good practice to remove location requests when the activity is in a paused or
        // stopped state. Doing so helps battery performance and is especially
        // recommended in applications that request frequent location updates.

        // The final argument to {@code requestLocationUpdates()} is a LocationListener
        // (http://developer.Android.com/reference/com/google/Android/gms/location/LocationListener.html).
        LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
    }
    @Override
    public void onTaskRemoved(Intent rootIntent) {
        Log.e("FLAGX : ", ServiceInfo.FLAG_STOP_WITH_TASK + "");
        Intent restartServiceIntent = new Intent(getApplicationContext(),
                this.getClass());
        restartServiceIntent.setPackage(getPackageName());

        PendingIntent restartServicePendingIntent = PendingIntent.getService(
                getApplicationContext(), 1, restartServiceIntent,
                PendingIntent.FLAG_ONE_SHOT);
        AlarmManager alarmService = (AlarmManager) getApplicationContext()
                .getSystemService(Context.ALARM_SERVICE);
        alarmService.set(AlarmManager.ELAPSED_REALTIME,
                SystemClock.elapsedRealtime() + 1000,
                restartServicePendingIntent);

        super.onTaskRemoved(rootIntent);
    }
}
11
Arindam Dawn

Überschreiben Sie onTaskRemoved () in Ihrem Dienst und verwenden Sie den Alarmmanager, um den Dienst erneut zu starten. Nachfolgend finden Sie Code aus unserer App, der dasselbe tut und gut funktioniert: 

@Override
public void onTaskRemoved(Intent rootIntent) {
    super.onTaskRemoved(rootIntent);

    Log.d(TAG, "TASK REMOVED");

    PendingIntent service = PendingIntent.getService(
            getApplicationContext(),
            1001,
            new Intent(getApplicationContext(), MyService.class),
            PendingIntent.FLAG_ONE_SHOT);

    AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
    alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, 1000, service);
}  

Da Sie möglicherweise den Standort regelmäßig senden möchten, auch wenn der Dienst aufgrund eines zu geringen Speichers (oder aus irgendeinem Grund) beendet wird, empfehle ich Ihnen, die uncaughtException zu behandeln, um ihn nach N Sekunden neu zu starten. So haben wir es in unserer App gemacht, die perfekt funktioniert: 

private Thread.UncaughtExceptionHandler defaultUEH;
private Thread.UncaughtExceptionHandler uncaughtExceptionHandler = new Thread.UncaughtExceptionHandler() {

    @Override
    public void uncaughtException(Thread thread, Throwable ex) {
        Log.d(TAG, "Uncaught exception start!");
        ex.printStackTrace();

        //Same as done in onTaskRemoved()
        PendingIntent service = PendingIntent.getService(
                getApplicationContext(),
                1001,
                new Intent(getApplicationContext(), MyService.class),
                PendingIntent.FLAG_ONE_SHOT);

        AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
        alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, 1000, service);
        System.exit(2);
        }
    };

Hinweis: Ich denke und ich erinnere mich, dass ich es auf KitKat verifiziert habe, dass START_STICKY auf KitKat und höheren API-Leveln nicht funktioniert. Bitte überprüfen Sie dies selbst. 

MEHR:
Da Sie regelmäßig senden, müssen Sie möglicherweise den deep sleep-Modus beachten. Verwenden Sie WakefulBroadcastReceiver in Kombination mit dem AlarmManager, damit die Dinge im tiefen Schlaf funktionieren. Werfen Sie einen Blick auf meinen anderen Beitrag Wie verwende ich http im Tiefschlafmodus

UPDATE:
Diese Lösung funktioniert nicht (muss eigentlich nicht funktionieren), wenn der Benutzer "FORCE STOP" die Anwendung aus den Einstellungen aktiviert. Dies ist in der Tat gut, da ein Neustart des Dienstes nicht sinnvoll ist, wenn der Benutzer die Anwendung selbst beenden möchte. Also ist es gut.

19
cgr

return Service.START_NOT_STICKY; durch return START_STICKY; ersetzen

0
Hojjat Imani

Wenn Sie ONLY den Dienst nach dem Abbruch der letzten Aufgabe neu starten möchten, verwenden Sie ihn einfach

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

Wenn Sie START_STICKY verwenden, wenn Sie die App von der letzten Task beenden, wird Ihr Dienst beendet (onTaskRemoved ausgelöst, onDestroyNICHT fired) , DANN WIRD automatisch ausgeführt neu starten (onCreate gefeuert, onStartComand gefeuert)

0
Linh