NETWORK_PROVIDER的LocationListener已启用,但永远不会调用onLocationChanged

Question

我正在开发一个应用程序,在服务中的6分钟和6分钟内整天获得手机的位置,它工作正常,但有时OnLocationChanged网络提供者监听器的方法停止被调用,我不知道为什么.

它由于某种原因停止被调用,但是当我手动启用或禁用提供程序onProviderEnabled并且onProviderDisabled被调用时,提供程序已启用且Lister正在工作.

它恰好发生NETWORK_PROVIDER,GPS_PROVIDER效果很好.

监听器:

LocationListener locationListenerGPS = new LocationListener() {
        // @Override
        public void onStatusChanged(String provider, int status, Bundle extras) {
            // TODO locationListenerGPS onStatusChanged
            Log.d(TAG, "Provedor trocado");
        }

        // @Override
        public void onProviderEnabled(String provider) {
            Log.w(TAG, "PROVEDOR " + provider + " HABILITADO!");
        }

        // @Override
        public void onProviderDisabled(String provider) {
            Log.w(TAG, "PROVEDOR " + provider + " DESABILITADO!");
        }

        // @Override
        public void onLocationChanged(Location location) {

            longitudeGPS = location.getLongitude();
            latitudeGPS = location.getLatitude();
            Log.d(TAG,"LocationChangedGPS LAT: "+latitudeGPS+" longi: "+longitudeGPS);
            gpsComSinal = true;
        }
    };

    LocationListener locationListenerNET = new LocationListener() {

        // @Override
        public void onStatusChanged(String provider, int status, Bundle extras) {
            // TODO locationListenerNET onStatusChanged
            Log.d("Contele", "Provedor foi mudado");
        }

        // @Override
        public void onProviderEnabled(String provider) {
            Log.i(TAG, "PROVEDOR " + provider + " HABILITADO!");
        }

        // @Override
        public void onProviderDisabled(String provider) {
            Log.i(TAG, "PROVEDOR " + provider + " DESABILITADO!");
        }

        @Override
        public void onLocationChanged(Location location) {
            longitudeNET = location.getLongitude();
            latitudeNET = location.getLatitude();
            Log.d(TAG,"LocationChangedNET LAT: "+latitudeNET+" longi: "+longitudeNET);
            netComSinal = true;
        }
    };

码:

public void initProviders() {

        localizacao = (LocationManager) getApplicationContext().getSystemService(LOCATION_SERVICE);


        localizacao.removeUpdates(locationListenerNET);
        localizacao.removeUpdates(locationListenerGPS);

        localizacao.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0,
                locationListenerGPS);

        localizacao.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0,
                0, locationListenerNET);

        Log.d(TAG,"EsperaGPS");
        Handler esperaGPS = new Handler() {
            public void handleMessage(Message msg) {

                requestGPS();
            }
        };

        Message msgEsperaGPS = Message.obtain();
        msgEsperaGPS.what = 0;
        esperaGPS.sendMessageDelayed(msgEsperaGPS, 35000);
    }



    public void requestGPS() {
            if (gpsComSinal) {
                Log.d(TAG,"PEGO SINAL DE GPS");
                rastreio = "GPS";
                longitude = longitudeGPS;
                latitude = latitudeGPS;
                Log.d(TAG, "Utilizando provedor GPS.");
                localizacao.removeUpdates(locationListenerGPS);
                localizacao.removeUpdates(locationListenerNET);

            } else {
                Log.d(TAG,"Sem GPS... pegar NEt");
                // Setando os valores para usar network
                localizacao.removeUpdates(locationListenerGPS);
                localizacao.removeUpdates(locationListenerNET);
                localizacao
                        .requestLocationUpdates(LocationManager.NETWORK_PROVIDER,
                                0, 0, locationListenerNET);
                Log.d(TAG,"EsperaNET");

                        requestNET();
            }
        }

    public void requestNET() {
            if (netComSinal) {
                Log.d(TAG,"PEGO SINAL DE NET");
                rastreio = "NET";
                longitude = longitudeNET;
                latitude = latitudeNET;
                Log.d(TAG, "Utilizando provedor NET.");
                localizacao.removeUpdates(locationListenerNET);

            } else {
                localizacao.removeUpdates(locationListenerGPS);
                localizacao.removeUpdates(locationListenerNET);
                Log.d(TAG,"Sem sinal");
            }
        }

在三星Galaxy S3中报告:

仍然连续4天获得"Sem sinal".

这个问题已经发生在Galaxy Y和LG Optimus l5上

我做了另一个测试,看看其他aplications是否获得了NET位置,我发现他们正在为同样的问题传递,他们无法获得NET位置只是GetLastknowLocation; 为了测试我使用了Galaxy S3这个问题,我禁用了GPS提供商.(在Cerberus测试).

我找不到任何解释为什么NETWORKSLOCATIONS监听器停止给出位置,但可能是因为它不应该停止工作2或3天.

我已经用其他应用程序做了一些测试,看看这个问题是否正好发生在我的应用程序中,并且我发现它们正在传递相同的问题,例如在Cerberus中:

我在带有"Sem sinal"问题的手机(Galaxy S3)中禁用了GPS提供商,请看一下:

我的报告:

和Cerberus(2013年5月14日打印)报告:

但是,当我打开谷歌地图时似乎工作正常,我试图移动到一个距离的地方,看看它是否会显示GetLastknowLocation,但没有,谷歌地图让我在正确的地方,所以我意识到谷歌地图正在使用motevent将我移动到地图中;

并打印Google地图日志以获取NetWorkProvider:

正常情况:

Sem sinal案件:

Answer 1

我遇到过与网络提供商类似的问题,唯一的解决办法就是重启设备.虽然谷歌地图显示总是正确的位置,因为它使用除网络位置提供商之外的其他传感器信息.

但这里是个好消息,不是很长一段时间回谷歌加入熔融的位置提供的API通过其谷歌Play业务框架是超级容易比GPS /网络位置提供者使用.

兼容API级别8,现在当我遇到这个奇怪的网络提供商问题时,同时Fused Location为我提供了准确的位置(没有设备重启).

我在这里提交了一个工作的FusedLocation测试项目,你可以自己克隆和测试..

以下是代码片段: -

package com.example.fusedLoctionTest.service;

import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.support.v4.content.LocalBroadcastManager;
import android.util.Log;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesClient;
import com.google.android.gms.location.LocationClient;
import com.google.android.gms.location.LocationRequest;

public class FusedLocationService extends Service implements GooglePlayServicesClient.ConnectionCallbacks,
        GooglePlayServicesClient.OnConnectionFailedListener, com.google.android.gms.location.LocationListener{
    private static final LocationRequest REQUEST = LocationRequest.create()
            .setInterval(0)
            .setFastestInterval(0)
            .setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
    public static final String LOCATION_RECEIVED = "fused.location.received";
    private Long now;

    private LocationClient mLocationClient;
    private final Object locking = new Object();
    private Runnable onFusedLocationProviderTimeout;
    private Handler handler = new Handler();

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        super.onStartCommand(intent, flags, startId);
        now = Long.valueOf(System.currentTimeMillis());
        mLocationClient = new LocationClient(this, this, this);
        mLocationClient.connect();
        return START_STICKY;
    }

    @Override
    public void onConnected(Bundle bundle) {
        Log.d("FusedLocationService", "Fused Location Provider got connected successfully");
        mLocationClient.requestLocationUpdates(REQUEST,this);
        onFusedLocationProviderTimeout = new Runnable() {
            public void run() {
                Log.d("FusedLocationService", "location Timeout");

                Location lastbestStaleLocation=getLastBestStaleLocation();
                sendLocationUsingBroadCast(lastbestStaleLocation);

                if(lastbestStaleLocation!=null)
                    Log.d("FusedLocationService", "Last best location returned ["+lastbestStaleLocation.getLatitude()+","+lastbestStaleLocation.getLongitude()+"] in "+(Long.valueOf(System.currentTimeMillis())-now)+" ms");

                if(mLocationClient.isConnected())
                    mLocationClient.disconnect();
            }
        };
        handler.postDelayed(onFusedLocationProviderTimeout, 20000);//20 sec
    }

    private void sendLocationUsingBroadCast(Location location) {
        Intent locationBroadcast = new Intent(FusedLocationService.LOCATION_RECEIVED);
        locationBroadcast.putExtra("LOCATION", location);
        locationBroadcast.putExtra("TIME", Long.valueOf(System.currentTimeMillis()-now) +" ms");
        LocalBroadcastManager.getInstance(this).sendBroadcast(locationBroadcast);
        stopSelf();
    }

    @Override
    public void onDisconnected() {
        Log.d("FusedLocationService","Fused Location Provider got disconnected successfully");
        stopSelf();
    }

    @Override
    public void onLocationChanged(Location location) {
        synchronized (locking){
            Log.d("FusedLocationService", "Location received successfully ["+location.getLatitude()+","+location.getLongitude()+"] in "+(Long.valueOf(System.currentTimeMillis()-now))+" ms");

            handler.removeCallbacks(onFusedLocationProviderTimeout);
            if(mLocationClient.isConnected())
                mLocationClient.removeLocationUpdates(this);

            sendLocationUsingBroadCast(location);

            if(mLocationClient.isConnected())
                mLocationClient.disconnect();
        }
    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {
        Log.d("FusedLocationService", "Error connecting to Fused Location Provider");
    }

    public Location getLastBestStaleLocation() {
        Location bestResult = null;
        LocationManager locMgr = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        Location lastFusedLocation=mLocationClient.getLastLocation();
        Location gpsLocation = locMgr.getLastKnownLocation(LocationManager.GPS_PROVIDER);
        Location networkLocation = locMgr.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
        if (gpsLocation != null && networkLocation != null) {
            if (gpsLocation.getTime() > networkLocation.getTime())
                bestResult = gpsLocation;
        } else if (gpsLocation != null) {
            bestResult = gpsLocation;
        } else if (networkLocation != null) {
            bestResult = networkLocation;
        }

        //take Fused Location in to consideration while checking for last stale location
        if (bestResult != null && lastFusedLocation != null) {
            if (bestResult.getTime() < lastFusedLocation.getTime())
                bestResult = lastFusedLocation;
        }

        return bestResult;
    }

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

Answer 2

我认为这是因为您的应用程序在后台被“杀死”。我以前遇到过这个问题，我通过在服务中移动 LocationListener 的创建来解决它。请务必保留对侦听器的引用。它只是可能解决问题。