Android服务拒绝了位置权限

Question

所以我试图在BroadcastReceiver调用的服务中获取当前位置。当我检查服务中是否给出位置权限时，它总是失败。我想要获取当前的GPS位置。

这是BroadcastReceiver

    public class AlarmReceiver extends WakefulBroadcastReceiver{

    private static final String TAG = AlarmReceiver.class.getSimpleName();
    // The app's AlarmManager, which provides access to the system alarm services.
    private AlarmManager alarmMgr;
    // The pending intent that is triggered when the alarm fires.
    private PendingIntent alarmIntent;

    @Override
    public void onReceive(Context context, Intent intent) {
        alarmMgr = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
        context.startService(new Intent(context, AlarmService.class));
    }

    /**
     * Cancels the alarm.
     * @param context
     */
    public void cancelAlarm(Context context) {
        // If the alarm has been set, cancel it.
        if (alarmMgr!= null) {
            alarmMgr.cancel(alarmIntent);
        }
    }
}

这是服务

public class AlarmService extends Service {
    private static final String TAG = AlarmService.class.getSimpleName();

    public AlarmService() {
    }

    @Override
    public IBinder onBind(Intent intent) {
        // TODO: Return the communication channel to the service.
        throw new UnsupportedOperationException("Not yet implemented");
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Realm realm = Realm.getDefaultInstance();
        RealmResults<Trip> trips = realm.where(Trip.class).findAll();
        for (Trip trip : trips) {
            if (active(trip)) {
                getStamp(trip);
            }
        }
        return START_STICKY;
    }

    public void getStamp(Trip trip) {
        Log.d(TAG, "Getting Stamp");
        LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED ) {

            return;
        }
        Log.d(TAG, "Location found");
        //get and store current location using GPS only
        Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
        Log.d(TAG, location.toString());
    }


    public boolean active(Trip trip){
        Date now = new Date();
        if(now.compareTo(trip.getStart()) > 0 && now.compareTo(trip.getEnd()) < 0){
            return true;
        }
        return false;
    }
}

这是我的清单

    <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.myapplication.app.myapplication">

    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="com.android.alarm.permission.SET_ALARM" />

    <application
        android:name=".ApplicationSingleton"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/NoActionBar">
        <activity android:name=".StartTravelActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".TripsViewActivity" />
        <activity android:name=".TripDetailActivity" />

        <receiver android:name=".alarms.AlarmReceiver" />
        <receiver
            android:name=".alarms.BootReceiver"
            android:enabled="false">
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED" />
            </intent-filter>
        </receiver>
        <receiver android:name=".alarms.AlarmReceiver" />

        <service
            android:name=".alarms.AlarmService"
            android:enabled="true"
            android:exported="true"></service>
    </application>

</manifest>