안녕하십니까!!

앱 개발도중 GPS 에서 현제 위치를 들고오지 못하고 null을 리턴 시켜 버립니다

 Location location = locationManager.getLastKnownLocation(provider);

여기서 location  이 null 로 리턴 되는 상태입니다

myeclipse 를 쓰구 애뮬은 Google Api 2.0 level 5  로 돌리고 있습니다

소스 첨부해 드리겠습니다!! 
import android.app.Activity;
import android.content.Context;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.widget.TextView;
public class Star_Music extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        LocationManager locationManager;
        String context = Context.LOCATION_SERVICE;
        locationManager = (LocationManager)getSystemService(context);
        
        String provider = LocationManager.GPS_PROVIDER;
        Location location = locationManager.getLastKnownLocation(provider);
        updateWithNewLocation(location);
        
    }
    
    private void updateWithNewLocation(Location location){
     String latLongString;
     TextView myLocationText;
     myLocationText = (TextView)findViewById(R.id.myLocationText);
     if(location != null){
      double lat = location.getLatitude();
      double lng = location.getLongitude();
      latLongString = "위도:"+lat+"\n경도:"+lng;
     }else{
      latLongString = "위치를 찾을수 없음"; 
     }
     myLocationText.setText("당신의 현제 위치는:\n"+latLongString);
    }
}


<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.star.music"
      android:versionCode="1"
      android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".Star_Music"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
  <uses-library android:name="com.google.android.maps"/>
    </application>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
</manifest> 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
 <TextView 
  android:id="@+id/myLocationText" 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content"
 />
</LinearLayout>

도데체 왜 그런가요 흑흑
이 게시물을