在我的應用程序中獲取更新位置

我需要在我的應用程序中更新位置。我試圖通過在我的所有活動中添加下面顯示的代碼來完成此操作。我的問題是，我不能確定用戶會保持足夠長的時間來完成更新。我怎麼能有一些應用程序明智的聽衆每次給定的時間獲得更新的位置（比如30分鐘）？在我的應用程序中獲取更新位置

private LocationManager mLocationManager; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 

    super.onCreate(savedInstanceState); 

    mLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); 

    // My activity stuff 
}  

private 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; 

} 

@Override 
protected void onResume() { 
    super.onResume(); 
    // Request location updates at startup 
    mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, LOCATION_UPDATE_MIN_TIME, LOCATION_UPDATE_MIN_DIST, this); 
    mLocationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, LOCATION_UPDATE_MIN_TIME, LOCATION_UPDATE_MIN_DIST, this); 
    getBestLocation(mLocationManager) 
} 

@Override 
protected void onPause() { 
    super.onPause(); 
    // Remove the locationlistener updates when Activity is paused 
    mLocationManager.removeUpdates(this); 
} 

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

@Override 
public void onStatusChanged(String provider, int status, Bundle extras) { 
    // Nothing here 

} 

@Override 
public void onProviderEnabled(String provider) { 
    Location location = getBestLocation(mLocationManager); 
    // Initialize the location fields 
    if (location != null) {    
     GlobalVars.lat = (Double) (location.getLatitude()); 
     GlobalVars.lng = (Double) (location.getLongitude());      
    } 
} 

@Override 
public void onProviderDisabled(String provider) {   
}

來源

2011-06-18 jul

經過進一步調查，我結束了使用服務。

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); 
     locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this); 

     Location loc = getBestLocation(locationManager); 
     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){} 
    public void onProviderDisabled(String s){} 
    public void onStatusChanged(String s, int i, Bundle b){} 

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

來源

2011-06-18 15:48:36 jul

每個Android應用程序都有一個應用程序（或子類），您可以將默認值提供給您自己的應用程序範圍的功能。只需繼承android.app.Application即可添加附加功能，並在清單中聲明應用程序。在清單的<應用程序>節點中，提供一個與您的覆蓋的全名相同的android：name屬性。

一旦你明白了，給它一個靜態的訪問方法是微不足道的。

來源

2011-06-18 11:06:36 mah

在我的應用程序中獲取更新位置

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