List<String> providers =locationManager.getProviders(true);
여기서 list가 비어 있다고 나오고 for문 안으로 들어가지를 못하네요..
왜 그런지 알 수가 없어서...ㅠ

아래가 코드이구요.

package com.example.locationtest;

import java.util.List;

import android.app.Activity;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.widget.TextView;

public class LocationTest extends Activity {
    /** Called when the activity is first created. */
LocationManager locationManager;
    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.main);
        
        String location_context = Context.LOCATION_SERVICE;
        LocationManager locationManager = (LocationManager)getSystemService(location_context);
            
     TextView tv = (TextView)findViewById(R.id.TextView01);
     StringBuilder sb = new StringBuilder("이용 가능한 공급자: ");
    
     List<String> providers =locationManager.getProviders(true);
    
     for(String provider : providers){
     locationManager.requestLocationUpdates(provider, 1000, 0, new LocationListener(){
     public void onLocationChanged(Location location){}
     public void onProviderDisabled(String provider){}
     public void onProviderEnabled(String provider){}
     public void onStatusChanged(String provider, int status, Bundle extras){}
     });
    
     sb.append("\n").append(providers).append(":");
    
     Location location = locationManager.getLastKnownLocation(provider);
    
     if(location != null){
     double lat = location.getLatitude();
     double lng = location.getLongitude();
     sb.append(lat).append(", ").append(lng);
     }
     else{
     sb.append("위치 없음");
     }
     }
     tv.setText(sb);
     //setContentView(R.layout.main);
    }
    
    
    
}

Manifest 이구요..
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.example.locationtest"
      android:versionCode="1"
      android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".LocationTest"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
    <uses-sdk android:minSdkVersion="3" />
    <user-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_GPS" />
</manifest> 

main.xml 입니다.
<?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:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    />
<TextView android:text="TextView01" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/TextView01"></TextView>

</LinearLayout>


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