沒有地圖的Android GPS位置

我試圖建立一個應用程序來定位在我的本地區域的公交站點，並且我已經查看了爲我的應用程序查找gps當前位置的所有不同方法，而且這一切似乎都沒有上班。我所做的最後一個實現是給我經度和緯度爲0.0，這意味着它找不到任何位置。顯然，我想要做的是按名稱找到最近的公交車站，而不是通過長& lat，也不使用地圖視圖，並且這可以通過點擊按鈕來完成。有人可以幫助我如何實現這一點？提前致謝。下面是我的代碼：沒有地圖的Android GPS位置

package co.uk.nixr.unibustimes; 

import java.util.ArrayList; 


import com.google.android.maps.GeoPoint; 
import com.google.android.maps.MapView; 

import co.uk.nixr.unibustimes.CustomMenu.OnMenuItemSelectedListener; 
import co.uk.nixr.unibustimes.LocationHandler; 
import android.app.Activity; 
import android.app.AlertDialog; 
import android.app.Dialog; 
import android.content.Context; 
import android.content.DialogInterface; 
import android.content.Intent; 
import android.content.pm.ActivityInfo; 
import android.graphics.Bitmap; 
import android.graphics.BitmapFactory; 
import android.graphics.Canvas; 
import android.graphics.Point; 
import android.location.Criteria; 
import android.location.Location; 
import android.location.LocationListener; 
import android.location.LocationManager; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.KeyEvent; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemSelectedListener; 
import android.widget.ArrayAdapter; 
import android.widget.Button; 
import android.widget.Spinner; 
import android.widget.Toast; 

public class LocationActivity extends Activity implements OnMenuItemSelectedListener, OnItemSelectedListener, android.view.View.OnClickListener{ 

    /** 
    * Some global variables. 
    */ 
    GeoPoint p; 
    private CustomMenu mMenu; 
    private LocationHandler lh; 
    private double longitude, latitude; 
    private Location location; 
    private MyLocationListener locationListener; 
    public static final int MENU_ITEM_1 = 1; 
    public static final int MENU_ITEM_2 = 2; 
    public static final int MENU_ITEM_3 = 3; 
    public static final int MENU_ITEM_4 = 4; 
    private static final int DIALOG_CLOSE = 0; 

    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     this.setRequestedOrientation(
       ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); 
     setContentView(R.layout.location); 



     final Button button = (Button) findViewById(R.id.mylocation); 
     button.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View v) { 
       // Perform action on click 
       findLocaiton(); 
      } 
     }); 

    public void findLocaiton() 
    { 
      String strProvider = "", strContext = ""; 
      strContext = Context.LOCATION_SERVICE; 
      LocationManager locationManager = (LocationManager)getSystemService(strContext); 

      Log.i("HomePage : ","Defining Criteria."); 

      Criteria criteria = new Criteria(); 
      criteria.setAccuracy(Criteria.ACCURACY_FINE); 
      criteria.setPowerRequirement(Criteria.POWER_MEDIUM); 
      criteria.setSpeedRequired(false); 
      criteria.setCostAllowed(false); 
      criteria.setAltitudeRequired(false); 
      criteria.setBearingRequired(false); 

      Log.i("HomePage : ","Defining Provider."); 
      strProvider = locationManager.getBestProvider(criteria, true); 
      if(strProvider == null) 
      { 
        Log.e("HomePage : ", "Provider is not available."); 
      } 
      else if(strProvider.equals(LocationManager.GPS_PROVIDER)) 
      { 
        location = locationManager.getLastKnownLocation(strProvider); 
        updateWithNewLocation(location); 
        locationManager.requestLocationUpdates(strProvider, 30000, 0, locationListener); 
      } 
      else if(strProvider.equals(LocationManager.NETWORK_PROVIDER)) 
      { 
        location = locationManager.getLastKnownLocation(strProvider); 
        updateWithNewLocation(location); 
        locationManager.requestLocationUpdates(strProvider, 30000, 0, locationListener); 
      } 
    } 

    public void updateWithNewLocation(Location location) 
    { 
        if(location != null) 
        { 
          latitude = location.getLatitude(); 
          longitude = location.getLongitude(); 
        } 
        else 
        { 
          Log.d("HomePage", "No Location Found!"); 
        } 

     Toast msg = Toast.makeText(LocationActivity.this,"Latitude: "+ latitude +"\n"+ "Longitude: "+longitude, Toast.LENGTH_LONG); 
     msg.show(); 
    } 

    private class MyLocationListener implements LocationListener 
    { 
      public void onLocationChanged(Location location) 
      { 
        updateWithNewLocation(location); 
      } 

      public void onProviderDisabled(String provider) {} 

      public void onProviderEnabled(String provider) {} 

      public void onStatusChanged(String provider, int status, Bundle extras) {} 
    } 

}

對不起，我不太清楚，我也想座標，然後用它來尋找最近的公交車站，但不顯示座標，而我會顯示姓名的公交車站。在此先感謝您給出的任何答案或建議，我真的很感激：（

來源

2011-12-31 Nixr Systems

我不知道你怎麼能讓你的應用程序識別巴士站，而無需從他們的座標？您可以通過座標進行比較，該座標將映射到公交車站的名稱，並將映射到該名稱的座標與您的位置進行比較，因此您可以按名稱搜索：P – 2011-12-31 02:39:46

對不起，我不清楚，我確實想要獲取座標，然後用它找到最近的公共汽車站，但不顯示座標，而是顯示公交車站的名稱。 – 2011-12-31 02:51:36