GPSがオフのときに私の場所のサービスがバグするのはなぜですか？

Question

私は場所のサービスを使用している場所にアプリを構築しています。私はMainActivityのonCreateでそのサービスを開始していますが、GPSがオフの場合、私のサービスは緯度と経度を検索しません。それ以後GPSをオンにしても、私のサービスは奇妙に見えることはありません。サービス（とMainActivity）を開始する前にGPSをオンにした場合にのみ、サービスは正常に動作し、ロケーションを検索します。アプリで過ごした後にGPSをオンにしたときにサービスがうまく動作しないように設定するにはどうすればよいですか？ これは私の位置情報サービスである：再び

public class LocationUpdateService extends Service implements LocationListener, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener { 
protected static final String TAG = "LocationUpdateService"; 
public static final long UPDATE_INTERVAL_IN_MILLISECONDS = 30000; 
public static final long FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS = UPDATE_INTERVAL_IN_MILLISECONDS/2; 
public static Boolean mRequestingLocationUpdates; 
protected String mLastUpdateTime; 
protected String timeWhenStartLocationUpdates; 
protected String timeWhenStopLocationUpdates; 
protected String timeWhenServiceDestroyed; 
protected String connectionFailed; 
protected GoogleApiClient mGoogleApiClient; 
protected LocationRequest mLocationRequest; 
protected Location mCurrentLocation; 
protected String timeWhenGetInGetLatLong; 
protected String report_time; 
protected String timeFromElse; 
public static boolean isEnded = false; 
Calendar calendar; 


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

@Override 
public void onConnected(@Nullable Bundle bundle) { 
    startLocationUpdates(); 
} 

@Override 
public void onConnectionSuspended(int i) { 
    Log.i(TAG, "Connection suspended=="); 
    mGoogleApiClient.connect(); 
} 

@Override 
public void onLocationChanged(Location location) { 
    mCurrentLocation = location; 
    mLastUpdateTime = DateFormat.getTimeInstance().format(new Date()); 
    Log.d("mCurrentLocation", "Location is: " + location); 
    getLatLong(); 
    SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("user_location", MODE_PRIVATE); 
    SharedPreferences.Editor editor = sharedPreferences.edit(); 
    editor.putString("TimeWhenCameToOnLocationChanged", mLastUpdateTime); 
    editor.apply(); 
    Log.d("onLocationchanged", "OnLocationChangedInServiceLocation"); 
    Log.d("Time ", "Time of lat and long from Service: " + mLastUpdateTime); 
} 

@Override 
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) { 
    connectionFailed = DateFormat.getTimeInstance().format(new Date()); 
    SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("user_location", MODE_PRIVATE); 
    SharedPreferences.Editor editor = sharedPreferences.edit(); 
    editor.putString("connectionFailed", connectionFailed); 
    editor.apply(); 
    Log.i(TAG, "Connection failed: ConnectionResult.getErrorCode() = " + connectionResult.getErrorCode()); 
} 

@Override 
public int onStartCommand(Intent intent, int flags, int startId) { 
    Log.d("LOC", "Service init..."); 
    return Service.START_STICKY; 
} 

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

public void getLatLong() { 
    timeWhenGetInGetLatLong = DateFormat.getTimeInstance().format(new Date()); 

    if (mCurrentLocation != null && mLastUpdateTime != null) { 

     String lat = String.valueOf(mCurrentLocation.getLatitude()); 
     String lng = String.valueOf(mCurrentLocation.getLongitude()); 
     calendar = Calendar.getInstance(); 
     @SuppressLint("SimpleDateFormat") SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.sss"); 
     simpleDateFormat.setTimeZone(TimeZone.getTimeZone("UTC")); 
     report_time = simpleDateFormat.format(calendar.getTime()); 
     Log.d("preferences", "Time stored in preferences: " + mLastUpdateTime); 
     SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("user_location", MODE_PRIVATE); 
     SharedPreferences.Editor editor = sharedPreferences.edit(); 
     editor.putString("user_latitude", lat); 
     editor.putString("user_longitude", lng); 
     editor.putString("getLatLongIf", "ok"); 
     editor.putString("report_time_for_location_response", report_time); 
     editor.putString("time_when_comes_to_getLatLong", timeWhenGetInGetLatLong); 
     editor.apply(); 
    }else{ 
     timeFromElse = DateFormat.getTimeInstance().format(new Date()); 
     SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("user_location", MODE_PRIVATE); 
     SharedPreferences.Editor editor = sharedPreferences.edit(); 
     editor.putString("getLatLongElse", timeFromElse); 
     editor.apply(); 
    } 
} 

protected void createLocationRequest() { 
    mGoogleApiClient.connect(); 
    mLocationRequest = new LocationRequest(); 
    mLocationRequest.setInterval(UPDATE_INTERVAL_IN_MILLISECONDS); 
    mLocationRequest.setFastestInterval(FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS); 
    mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY); 
} 

protected void startLocationUpdates() { 
    timeWhenStartLocationUpdates = DateFormat.getTimeInstance().format(new Date()); 
    if (!mRequestingLocationUpdates) { 
     mRequestingLocationUpdates = true; 
     if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) { 

      return; 
     } 
     LocationServices.FusedLocationApi.requestLocationUpdates(
       mGoogleApiClient, mLocationRequest, this); 
     SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("user_location", MODE_PRIVATE); 
     SharedPreferences.Editor editor = sharedPreferences.edit(); 
     editor.putString("startLocationUpdates", timeWhenStartLocationUpdates); 
     editor.apply(); 
     Log.i("startUpdates", " startLocationUpdates===" + timeWhenStartLocationUpdates); 
     isEnded = true; 
    } 
} 
protected void stopLocationUpdates() { 
    if (mRequestingLocationUpdates) { 
     mRequestingLocationUpdates = false; 
     timeWhenStopLocationUpdates = DateFormat.getTimeInstance().format(new Date()); 
     SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("user_location", MODE_PRIVATE); 
     SharedPreferences.Editor editor = sharedPreferences.edit(); 
     editor.putString("stopLocationUpdates", timeWhenStopLocationUpdates); 
     editor.apply(); 
     Log.d("stopUpdates", "stopLocationUpdates();==" + timeWhenStopLocationUpdates); 
     LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this); 

    } 
} 

@Override 
public void onDestroy() { 
    super.onDestroy(); 
    timeWhenServiceDestroyed = DateFormat.getTimeInstance().format(new Date()); 
    SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("user_location", MODE_PRIVATE); 
    SharedPreferences.Editor editor = sharedPreferences.edit(); 
    editor.putString("onDestroyService", timeWhenServiceDestroyed); 
    editor.apply(); 
    stopLocationUpdates(); 
    Log.d("onDestroyService", "onDestroy: + " + timeWhenServiceDestroyed); 
} 

@Override 
public void onCreate() { 
    super.onCreate(); 

    isEnded = false; 
    mRequestingLocationUpdates = false; 
    mLastUpdateTime = ""; 
    buildGoogleApiClient(); 
    Log.d("onCreateService", "onCreateService"); 
} 

、私は でした誰も私を助け...メインの活動でのonCreateで私のサービスを開始するのですか？前もって感謝します。

Answer 1

サービスのコードをどのように変更したか確認してください。

ステップ1. GoogleLocationService.java

public class GoogleLocationService { 
private GoogleServicesCallbacks callbacks = new GoogleServicesCallbacks(); 
LocationUpdateListener locationUpdateListener; 
Context activity; 
protected GoogleApiClient mGoogleApiClient; 
protected LocationRequest mLocationRequest; 

public static final long UPDATE_INTERVAL_IN_MILLISECONDS = 30000; 


public GoogleLocationService(Context activity, LocationUpdateListener locationUpdateListener) { 
    this.locationUpdateListener = locationUpdateListener; 
    this.activity = activity; 
    buildGoogleApiClient(); 
} 

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

protected void createLocationRequest() { 
    mLocationRequest = new LocationRequest(); 
    mLocationRequest.setInterval(UPDATE_INTERVAL_IN_MILLISECONDS); 
    mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY); 

} 

private class GoogleServicesCallbacks implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener { 

    @Override 
    public void onConnected(Bundle bundle) { 
     startLocationUpdates(); 
    } 

    @Override 
    public void onConnectionSuspended(int i) { 
     mGoogleApiClient.connect(); 
    } 

    @Override 
    public void onConnectionFailed(@NonNull ConnectionResult connectionResult) { 

     if (connectionResult.getErrorCode() == ConnectionResult.SERVICE_VERSION_UPDATE_REQUIRED) { 
      Toast.makeText(activity, "Google play service not updated", Toast.LENGTH_LONG).show(); 
       String connectionFailed = DateFormat.getTimeInstance().format(new Date()); 
SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("user_location", MODE_PRIVATE); 
SharedPreferences.Editor editor = sharedPreferences.edit(); 
editor.putString("connectionFailed", connectionFailed); 
editor.apply(); 
Log.i(TAG, "Connection failed: ConnectionResult.getErrorCode() = " + connectionResult.getErrorCode()); 

     } 
     locationUpdateListener.cannotReceiveLocationUpdates(); 
    } 

    @Override 
    public void onLocationChanged(Location location) { 
     if (location.hasAccuracy()) { 
      if (location.getAccuracy() < 30) { 
       locationUpdateListener.updateLocation(location); 
      } 
     } 
    } 
} 

private static boolean locationEnabled(Context context) { 
    boolean gps_enabled = false; 
    LocationManager lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE); 
    try { 
     gps_enabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER); 
    } catch (Exception ex) { 
     ex.printStackTrace(); 
    } 
    return gps_enabled; 
} 

private boolean servicesConnected(Context context) { 
    return isPackageInstalled(GooglePlayServicesUtil.GOOGLE_PLAY_STORE_PACKAGE, context); 
} 

private boolean isPackageInstalled(String packagename, Context context) { 
    PackageManager pm = context.getPackageManager(); 
    try { 
     pm.getPackageInfo(packagename, PackageManager.GET_ACTIVITIES); 
     return true; 
    } catch (PackageManager.NameNotFoundException e) { 
     e.printStackTrace(); 
     return false; 
    } 
} 


public void startUpdates() { 
    /* 
    * Connect the client. Don't re-start any requests here; instead, wait 
    * for onResume() 
    */ 
    if (servicesConnected(activity)) { 
     if (locationEnabled(activity)) { 
      locationUpdateListener.canReceiveLocationUpdates(); 
      startLocationUpdates(); 
     } else { 
      locationUpdateListener.cannotReceiveLocationUpdates(); 
      Toast.makeText(activity, "Unable to get your location.Please turn on your device Gps", Toast.LENGTH_LONG).show(); 
     } 
    } else { 
     locationUpdateListener.cannotReceiveLocationUpdates(); 
     Toast.makeText(activity, "Google play service not available", Toast.LENGTH_LONG).show(); 
    } 
} 

//stop location updates 
public void stopUpdates() { 
    stopLocationUpdates(); 
} 

//start location updates 
private void startLocationUpdates() { 

    if (checkSelfPermission(activity, ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && checkSelfPermission(activity, ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) { 
     return; 
    } 
    if (mGoogleApiClient.isConnected()) { 
     LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, callbacks); 
     String timeWhenStartLocationUpdates = DateFormat.getTimeInstance().format(new Date()); 
     SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("user_location", MODE_PRIVATE); 
    SharedPreferences.Editor editor = sharedPreferences.edit(); 
    editor.putString("startLocationUpdates", timeWhenStartLocationUpdates); 
    editor.apply(); 
    } 
} 

public void stopLocationUpdates() { 
    if (mGoogleApiClient.isConnected()) { 
     LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, callbacks); 
     String timeWhenStopLocationUpdates = DateFormat.getTimeInstance().format(new Date()); 
    SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("user_location", MODE_PRIVATE); 
    SharedPreferences.Editor editor = sharedPreferences.edit(); 
    editor.putString("stopLocationUpdates", timeWhenStopLocationUpdates); 
    editor.apply(); 
    } 
} 

public void startGoogleApi() { 
    mGoogleApiClient.connect(); 
} 

public void closeGoogleApi() { 
    mGoogleApiClient.disconnect(); 
} 

} 

ステップ2をこのクラス してください。

public class LocationUpdateService extends Service { protected String mLastUpdateTime; protected String timeWhenServiceDestroyed; protected String timeWhenGetInGetLatLong; protected String report_time; protected String timeFromElse; Calendar calendar; private GoogleLocationService googleLocationService; IBinder mBinder = new LocalBinder(); public class LocalBinder extends Binder { public LocationUpdateService getServerInstance() { return LocationUpdateService.this; } } @Override public IBinder onBind(Intent intent) { return mBinder; } @Override public int onStartCommand(Intent intent, int flags, int startId) { Log.d("LOC", "Service init..."); return Service.START_STICKY; } protected synchronized void buildGoogleApiClient() { Log.i(TAG, "Building GoogleApiClient==="); mGoogleApiClient = new GoogleApiClient.Builder(this) .addApi(LocationServices.API) .addConnectionCallbacks(this) .addOnConnectionFailedListener(this) .build(); createLocationRequest(); } public void getLatLong() { timeWhenGetInGetLatLong = DateFormat.getTimeInstance().format(new Date()); if (mCurrentLocation != null && mLastUpdateTime != null) { String lat = String.valueOf(mCurrentLocation.getLatitude()); String lng = String.valueOf(mCurrentLocation.getLongitude()); calendar = Calendar.getInstance(); @SuppressLint("SimpleDateFormat") SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.sss"); simpleDateFormat.setTimeZone(TimeZone.getTimeZone("UTC")); report_time = simpleDateFormat.format(calendar.getTime()); Log.d("preferences", "Time stored in preferences: " + mLastUpdateTime); SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("user_location", MODE_PRIVATE); SharedPreferences.Editor editor = sharedPreferences.edit(); editor.putString("user_latitude", lat); editor.putString("user_longitude", lng); editor.putString("getLatLongIf", "ok"); editor.putString("report_time_for_location_response", report_time); editor.putString("time_when_comes_to_getLatLong", timeWhenGetInGetLatLong); editor.apply(); }else{ timeFromElse = DateFormat.getTimeInstance().format(new Date()); SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("user_location", MODE_PRIVATE); SharedPreferences.Editor editor = sharedPreferences.edit(); editor.putString("getLatLongElse", timeFromElse); editor.apply(); } } @Override public void onDestroy() { super.onDestroy(); timeWhenServiceDestroyed = DateFormat.getTimeInstance().format(new Date()); SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("user_location", MODE_PRIVATE); SharedPreferences.Editor editor = sharedPreferences.edit(); editor.putString("onDestroyService", timeWhenServiceDestroyed); editor.apply(); if (googleLocationService != null) { googleLocationService.stopLocationUpdates(); } Log.d("onDestroyService", "onDestroy: + " + timeWhenServiceDestroyed); } @Override public void onCreate() { super.onCreate(); mLastUpdateTime = ""; Log.d("onCreateService", "onCreateService"); googleLocationService = new GoogleLocationService(context, new LocationUpdateListener() { @Override public void canReceiveLocationUpdates() { } @Override public void cannotReceiveLocationUpdates() { } //update location to our servers for tracking purpose @Override public void updateLocation(Location location) { if (location != null) { mCurrentLocation = location; mLastUpdateTime = DateFormat.getTimeInstance().format(new Date()); Log.d("mCurrentLocation", "Location is: " + location); getLatLong(); SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("user_location", MODE_PRIVATE); SharedPreferences.Editor editor = sharedPreferences.edit(); editor.putString("TimeWhenCameToOnLocationChanged", mLastUpdateTime); editor.apply(); Log.d("onLocationchanged", "OnLocationChangedInServiceLocation"); Log.d("Time ", "Time of lat and long from Service: " + mLastUpdateTime); } } @Override public void updateLocationName(String localityName, Location location) { googleLocationService.stopLocationUpdates(); } }); googleLocationService.startUpdates(); } 

に

LocationUpdateService.java この場所サービスクラスを作成する手順3

public interface LocationUpdateListener { 

/** 
* Called immediately the service starts if the service can obtain location 
*/ 
void canReceiveLocationUpdates(); 

/** 
* Called immediately the service tries to start if it cannot obtain location - eg the user has disabled wireless and 
*/ 
void cannotReceiveLocationUpdates(); 

/** 
* Called whenever the location has changed (at least non-trivially) 
* @param location 
*/ 
void updateLocation(Location location); 

/** 
* Called when GoogleLocationServices detects that the device has moved to a new location. 
* @param localityName The name of the locality (somewhere below street but above area). 
*/ 
void updateLocationName(String localityName, Location location); 
} 

LocationUpdateListener.javaこのインタフェース を作るあなたはこのヘルプを願って、これを試してみてください。アップデートされた緯度と経度は updateLocationにあります。