안녕하세용, 이번엔 로크켓과 소스를 제대로 올려 질문해요 ㅠㅠ
현재 구글맵에 마커 띄우고 그 마커에 대한 설명을 띄우는 연습을 하고 있는데요,

마커뜨는것 까지는 되는데, 그 마커를 클릭하면 어플이 stopped unexpectly 메세지와 함께 죽어버려요 ㅠ

로그캣 확인 결과는 다음과 같습니다.

10-13 04:17:51.270: ERROR/MapActivity(295): Couldn't get connection factory client
10-13 04:18:09.488: ERROR/AndroidRuntime(295): FATAL EXCEPTION: main
10-13 04:18:09.488: ERROR/AndroidRuntime(295): java.lang.NullPointerException
10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at com.android.internal.app.AlertController$AlertParams.<init>(AlertController.java:743)
10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at android.app.AlertDialog$Builder.<init>(AlertDialog.java:273)

10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at six.project.map.MyPartt$HelloItemizedOverlay.onTap(MyPartt.java:100)
10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at com.google.android.maps.ItemizedOverlay.onTap(ItemizedOverlay.java:453)10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at com.google.android.maps.OverlayBundle.onTap(OverlayBundle.java:83)
10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at com.google.android.maps.MapView$1.onSingleTapUp(MapView.java:347)
10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at com.google.android.maps.GestureDetector.onTouchEvent(GestureDetector.java:533)
10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at com.google.android.maps.MapView.onTouchEvent(MapView.java:647)

10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at android.view.View.dispatchTouchEvent(View.java:3766)
10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:897)
10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)

10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)

10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1671)
10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1107)
10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at android.app.Activity.dispatchTouchEvent(Activity.java:2086)

10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1655)

10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at android.view.ViewRoot.handleMessage(ViewRoot.java:1785)
10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at android.os.Handler.dispatchMessage(Handler.java:99)
10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at android.os.Looper.loop(Looper.java:123)

10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at android.app.ActivityThread.main(ActivityThread.java:4627)

10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at java.lang.reflect.Method.invokeNative(Native Method)
10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at java.lang.reflect.Method.invoke(Method.java:521)
10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
10-13 04:18:09.488: ERROR/AndroidRuntime(295):     at dalvik.system.NativeStart.main(Native Method)

그리고 해당 부분 소스코드 입니다.
     @Override
     public boolean onTap(int index) {     
  OverlayItem item = mOverlays.get(index);
  
    AlertDialog.Builder dialog = new AlertDialog.Builder(mContext); 
 
      dialog.setTitle(item.getTitle());
 
      dialog.setMessage(item.getSnippet()); 
      dialog.show();  
    return true;
  
   }
어디가 잘못되었는지 한번 봐주시면 정말 감사하겠습니다.. 저는 정말 초보라 쉽게쉽게 설명해주세요~ ^^

공지사항을 다 읽었음