如何在Android中不使用GPS獲取經度值？

Question

我有不具有GPS模塊的裝置。沒有任何方法可以在Android中不使用GPS模塊的情況下獲得Lat Lon值。

嘿，下來選民你能解釋一下什麼是錯在這個問題？ 如果你有問題的答案，否則試着理解問題。

Answer 1

只是在你的包中的Java類下。

MyLocation.java

import java.util.Timer; 
import java.util.TimerTask; 
import android.content.Context; 
import android.location.Location; 
import android.location.LocationListener; 
import android.location.LocationManager; 
import android.os.Bundle; 

public class MyLocation { 
    Timer timer1; 
    LocationManager lm; 
    LocationResult locationResult; 
    boolean gps_enabled=false; 
    boolean network_enabled=false; 

    public boolean getLocation(Context context, LocationResult result) 
    { 
     //I use LocationResult callback class to pass location value from MyLocation to user code. 
     locationResult=result; 
     if(lm==null) 
      lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE); 

     //exceptions will be thrown if provider is not permitted. 
     try 
     { 
      gps_enabled=lm.isProviderEnabled(LocationManager.GPS_PROVIDER); 
     } 
     catch(Exception ex) 
     { 
      ex.printStackTrace(); 
     } 
     try 
     { 
      network_enabled=lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER); 
     } 
     catch(Exception ex) 
     { 
      ex.printStackTrace(); 
     } 

     //don't start listeners if no provider is enabled 
     if(!gps_enabled && !network_enabled) 
      return false; 

     if(gps_enabled) 
      lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListenerGps); 
     if(network_enabled) 
      lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListenerNetwork); 
     timer1=new Timer(); 
     timer1.schedule(new GetLastLocation(), 20000); 
     return true; 
    } 

    LocationListener locationListenerGps = new LocationListener() 
    { 
     public void onLocationChanged(Location location) 
     { 
      timer1.cancel(); 
      locationResult.gotLocation(location); 



      // lm.removeUpdates(this); 
      //lm.removeUpdates(locationListenerNetwork); 
     } 
     public void onProviderDisabled(String provider) {} 
     public void onProviderEnabled(String provider) {} 
     public void onStatusChanged(String provider, int status, Bundle extras) {} 
    }; 

    LocationListener locationListenerNetwork = new LocationListener() 
    { 
     public void onLocationChanged(Location location) 
     { 
      timer1.cancel(); 
      locationResult.gotLocation(location); 
      // lm.removeUpdates(this); 
     // lm.removeUpdates(locationListenerGps); 
     } 
     public void onProviderDisabled(String provider) {} 
     public void onProviderEnabled(String provider) {} 
     public void onStatusChanged(String provider, int status, Bundle extras) {} 
    }; 

    class GetLastLocation extends TimerTask 
    { 
     @Override 
     public void run() { 
      //lm.removeUpdates(locationListenerGps); 
      //lm.removeUpdates(locationListenerNetwork); 

      Location net_loc=null, gps_loc=null; 
      if(gps_enabled) 
       gps_loc=lm.getLastKnownLocation(LocationManager.GPS_PROVIDER); 
      if(network_enabled) 
       net_loc=lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER); 

      //if there are both values use the latest one 
      if(gps_loc!=null && net_loc!=null){ 
       if(gps_loc.getTime()>net_loc.getTime()) 
        locationResult.gotLocation(gps_loc); 
       else 
        locationResult.gotLocation(net_loc); 
       return; 
      } 

      if(gps_loc!=null){ 
       locationResult.gotLocation(gps_loc); 
       return; 
      } 
      if(net_loc!=null){ 
       locationResult.gotLocation(net_loc); 
       return; 
      } 
      locationResult.gotLocation(null); 
     } 
    } 

    public static abstract class LocationResult 
    { 
     public abstract void gotLocation(Location location); 
    } 
} 

現在，在你的活動，你可以找到位置，像下面的代碼：

public static Location loc; 

     @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     // TODO Auto-generated method stub 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.splash_layout); 

     // to Find the Location 
     LocationResult locationResult = new LocationResult(){ 
      @Override 
      public void gotLocation(final Location location){ 
       loc=location; 
       System.out.println("Latitude: "+loc.getLatitude()); 
       System.out.println("Longitude: "+loc.getLongitude()); 
      } 
     }; 

     MyLocation myLocation = new MyLocation(); 
    myLocation.getLocation(SplashActivity.this, locationResult); 
    } 
} 

隨着你不必在設備的GPS上面的代碼。它會自動檢查最佳可用位置管理器並根據它找到位置。

它也需要在AndroidManifest.xml文件中的一些權限。

希望它能幫助你。

Answer 2

Location location =myManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER); 
    latPoint=location.getLatitude(); 
    lngPoint=location.getLongitude(); 

希望這會幫助你。 我們在這裏的緯度和經度使用網絡供應商不使用GPS.thats什麼ü想要得到。

Answer 3

如果您的設備不具備GPS，那麼你也可以使用Network_Provider對於GET緯度和經度，使用Network_Provider使用下面的代碼獲取緯度和經度，它會解決你的問題。

LocationManager lm = (LocationManager) GlobalApplication 
      .getAppContext().getSystemService(Context.LOCATION_SERVICE); 

Location location = lm 
      .getLastKnownLocation(LocationManager.NETWORK_PROVIDER); 

if(location != null){ 
    double latitude = location.getLatitude(); 
    double longitude = location.getLongitude(); 
}