안드로이드 네이버 맵 API사용에 대해 질문드립니다.

Question

제가 개인적으로 어플을 만들고있는데, 그 어플에 지도기능을 추가하고 싶습니다. 인터넷을 참고하여 소스를 짜 보았는데 에러만 발생을 하네여 ㅠㅠ

저는 구글에 나와있는대로 쳐보기도하고 나름 짱구를 굴려서 해보았지만 뭐가 문제인지 도저히 모르겠습니다.... ㅠㅠ소스와 Logcat을 봐도 모르겠어요 ㅠㅠ조언부탁드립니다.

 

?

package com.summer_vacation;   import android.os.Bundle; import android.view.MotionEvent; import android.widget.LinearLayout; import com.example.summervacation.R; import com.nhn.android.maps.NMapActivity; import com.nhn.android.maps.NMapController; import com.nhn.android.maps.NMapView; import com.nhn.android.maps.NMapView.OnMapStateChangeListener; import com.nhn.android.maps.NMapView.OnMapViewTouchEventListener; import com.nhn.android.maps.maplib.NGeoPoint; import com.nhn.android.maps.nmapmodel.NMapError;   public class MapActivity extends NMapActivity implements         OnMapStateChangeListener, OnMapViewTouchEventListener {       public static final String API_Key = "8c5825c0a43d9424e34e739dde5f230b";     // 네이버 API 발급     NMapView mMapview = null;     NMapController mMapController = null;     LinearLayout MapLayout;       /** Called when the activity is first created. */     @Override     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);           MapLayout = (LinearLayout) findViewById(R.id.map);         mMapview = new NMapView(this);         //checked         mMapview.setApiKey(API_Key);         //checked         setContentView(mMapview);         //checked         mMapview.setClickable(true);         //checked         mMapview.setOnMapStateChangeListener(this);         //checked         mMapview.setOnMapViewTouchEventListener(this);         //checked         mMapController = mMapview.getMapController();         //checked         mMapview.setBuiltInZoomControls(true, null);         //checked         MapLayout.addView(mMapview);         //checked         setContentView(R.layout.activity_map);         // TODO Auto-generated method stub     }       @Override     public void onLongPress(NMapView arg0, MotionEvent arg1) {         // TODO Auto-generated method stub       }       @Override     public void onLongPressCanceled(NMapView arg0) {         // TODO Auto-generated method stub       }       @Override     public void onScroll(NMapView arg0, MotionEvent arg1, MotionEvent arg2) {         // TODO Auto-generated method stub       }       @Override     public void onSingleTapUp(NMapView arg0, MotionEvent arg1) {         // TODO Auto-generated method stub       }       @Override     public void onTouchDown(NMapView arg0, MotionEvent arg1) {         // TODO Auto-generated method stub       }       @Override     public void onTouchUp(NMapView arg0, MotionEvent arg1) {         // TODO Auto-generated method stub       }       @Override     public void onAnimationStateChange(NMapView arg0, int arg1, int arg2) {         // TODO Auto-generated method stub       }       @Override     public void onMapCenterChange(NMapView arg0, NGeoPoint arg1) {         // TODO Auto-generated method stub       }       @Override     public void onMapCenterChangeFine(NMapView arg0) {         // TODO Auto-generated method stub       }       @Override     public void onMapInitHandler(NMapView mapview, NMapError errorInfo) {         // TODO Auto-generated method stub           if (errorInfo == null) {             mMapController.setMapCenter(new NGeoPoint(126.978371, 37.5666091),                     11);         } else {             android.util.Log.e("Map",                     "onMapInitHandler : error =" + errorInfo.toString());         }       }       @Override     public void onZoomLevelChange(NMapView arg0, int arg1) {         // TODO Auto-generated method stub       }   }

?

08-26 01:17:59.373: W/dalvikvm(15128): threadid=1: thread exiting with uncaught exception (group=0x41ee8e48) 08-26 01:17:59.373: E/AndroidRuntime(15128): FATAL EXCEPTION: main 08-26 01:17:59.373: E/AndroidRuntime(15128): Process: com.example.summervacation, PID: 15128 08-26 01:17:59.373: E/AndroidRuntime(15128): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.summervacation/com.summer_vacation.MapActivity}: java.lang.NullPointerException 08-26 01:17:59.373: E/AndroidRuntime(15128):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2202) 08-26 01:17:59.373: E/AndroidRuntime(15128):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2252) 08-26 01:17:59.373: E/AndroidRuntime(15128):    at android.app.ActivityThread.access$800(ActivityThread.java:139) 08-26 01:17:59.373: E/AndroidRuntime(15128):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1200) 08-26 01:17:59.373: E/AndroidRuntime(15128):    at android.os.Handler.dispatchMessage(Handler.java:102) 08-26 01:17:59.373: E/AndroidRuntime(15128):    at android.os.Looper.loop(Looper.java:136) 08-26 01:17:59.373: E/AndroidRuntime(15128):    at android.app.ActivityThread.main(ActivityThread.java:5103) 08-26 01:17:59.373: E/AndroidRuntime(15128):    at java.lang.reflect.Method.invokeNative(Native Method) 08-26 01:17:59.373: E/AndroidRuntime(15128):    at java.lang.reflect.Method.invoke(Method.java:515) 08-26 01:17:59.373: E/AndroidRuntime(15128):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790) 08-26 01:17:59.373: E/AndroidRuntime(15128):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:606) 08-26 01:17:59.373: E/AndroidRuntime(15128):    at dalvik.system.NativeStart.main(Native Method) 08-26 01:17:59.373: E/AndroidRuntime(15128): Caused by: java.lang.NullPointerException 08-26 01:17:59.373: E/AndroidRuntime(15128):    at com.summer_vacation.MapActivity.onCreate(MapActivity.java:46) 08-26 01:17:59.373: E/AndroidRuntime(15128):    at android.app.Activity.performCreate(Activity.java:5275) 08-26 01:17:59.373: E/AndroidRuntime(15128):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 08-26 01:17:59.373: E/AndroidRuntime(15128):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2166) 08-26 01:17:59.373: E/AndroidRuntime(15128):    ... 11 more

 

Answer 1

MapActivity의 46번째 줄에서 Null Pointer 에러네요. 위에서는 어디가 46번째 줄인지 모르니 해당 부분을 찾아보세요.

Comments

감사합니다 해보겠습니다 ~

Answer 2

setContentView가 findViewById보다 앞에 있어야 뷰가 찾아지겠죠?

Comments

네 감사드려요 ㅠㅠ 다시 설정해보니 에러가없어졌습니다 !