2011-06-23 72 views
1

我有一個服務來更新我的應用程序中的位置。當我用GPS禁用啓動我的應用程序時,返回到android菜單並啓用GPS,最後返回到我的應用程序(服務尚未銷燬),onProviderEnabled從不被調用。任何人都可以幫忙?位置服務onProviderEnabled從來沒有叫

更新:如果我重新啓動應用程序提供程序啓用。只有onProviderEnabled不叫......

在每一次活動中,我需要的位置我做

super.onCreate(savedInstanceState); 

    //.... 

    // Bind location service 
    bindService(new Intent(this, LocationService.class), mConnection, Context.BIND_AUTO_CREATE); 

    //.... 

@Override 
protected void onDestroy() { 
    super.onDestroy();  
    // Unbind LocationService 
    ItemDetail.this.unbindService(mConnection); 
} 

和服務

public class LocationService extends Service implements LocationListener { 
    LocationManager locationManager; 

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

    @Override 
    public void onCreate() {   
     locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE); 

     if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)){   

      // Update after minimum 5 minutes and if user has moved at least 100 meters. 
      locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 5 * 60 * 1000, 100, this);   

      Location loc = getBestLocation(locationManager); 
      if(loc!=null){ 
       GlobalVars.lat = (Double) (loc.getLatitude()); 
       GlobalVars.lng = (Double) (loc.getLongitude()); 
      } 
     } 
    } 

    public void onLocationChanged(Location loc) {   
     GlobalVars.lat = (Double) (loc.getLatitude()); 
     GlobalVars.lng = (Double) (loc.getLongitude()); 
    } 

    public static Location getBestLocation(LocationManager locationManager) { 

     Location location_gps = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER); 
     Location location_network = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER); 

     // If both are available, get the most recent 
     if(location_gps!=null && location_network !=null) { 
      return (location_gps.getTime() > location_network.getTime())?location_gps:location_network; 
     } 
     else if(location_gps==null && location_network ==null){ 
      return null; 
     } 
     else 
      return (location_gps==null)?location_network:location_gps; 

    } 

    public void onProviderEnabled(String s){ 
     locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 5 * 60 * 1000, 100, this); 
    } 
    public void onProviderDisabled(String s){ 
     locationManager.removeUpdates(this); 
     GlobalVars.lat = null; 
     GlobalVars.lng = null; 
    } 
    public void onStatusChanged(String s, int i, Bundle b){} 

    @Override 
    public void onDestroy() {  
     locationManager.removeUpdates(this); 
    } 
} 
+0

喜!你是否解決了這個問題?我正在尋找像你一樣的東西 - 所以我很樂意將你的代碼作爲參考材料。 我仍然困惑如何使用位置管理器的服務來繞過運行到ANR ... – Chris

回答

2

在你LocationService.onCreate()您的代碼檢查GPS提供者是否被禁用的方法。

if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)){

但你只有在已經啓用了啓動訂閱。請注意,您的監聽程序從未從LocationManager註冊過,也不會收到任何正在解除或啓用的位置提供程序的更新。而是改變你的onCreate方法來隨時撥打

locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 5 * 60 * 1000, 100, this);