SupportMapFragment를 사용하는 NullPointerException

Question

몇일 동안이 문제를 해결하기 위해 노력하고 있습니다. 나는 GoogleMaps와 SupportMapFragment로 소리를 지르고 있습니다. 내 앱을 실행하면 로그에이 오류가 표시되고 앱이 다운됩니다. 이 MapsFragment.java 클래스는

<?xml version="1.0" encoding="utf-8"?> 
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_height="match_parent" 
    android:layout_width="match_parent"> 

    <fragment 
     android:id="@+id/map" 
     android:name="com.google.android.gms.maps.SupportMapFragment" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" /> 

</FrameLayout> 

입니다 :

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="it.home.dressgallery" 
    android:versionCode="1" 
    android:versionName="1.0" > 

    <uses-sdk android:minSdkVersion="7" android:targetSdkVersion="19" /> 

    <permission 
     android:name="it.home.dressgallery.permission.MAPS_RECEIVE" 
     android:protectionLevel="signature" /> 
    <uses-permission android:name="it.home.dressgallery.permission.MAPS_RECEIVE" /> 

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> 
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/> 
    <uses-permission android:name="android.permission.INTERNET" /> 
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/> 
    <!-- The following two permissions are not required to use 
     Google Maps Android API v2, but are recommended. --> 
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/> 
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/> 

    <uses-feature 
     android:glEsVersion="0x00020000" 
     android:required="true"/> 

    <application 
     android:allowBackup="true" 
     android:icon="@drawable/ic_launcher" 
     android:label="@string/app_name" 
     android:theme="@style/AppBaseTheme" 
     android:hardwareAccelerated="true" > 


     <meta-data android:name="com.google.android.gms.version" 
      android:value="@integer/google_play_services_version" /> 

     <meta-data 
      android:name="com.google.android.maps.v2.API_KEY" 
      android:value="myapikey"/> 

     <activity 
      android:name="it.home.dressgallery.MeinActivity" 
      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> 

</manifest> 

이 maps_layout.xml입니다 : 여기

12-05 11:16:03.437 6931-6931/it.home.dressgallery E/dalvikvm﹕ Could not find class 'android.app.Notification$Builder', referenced from method com.google.android.gms.common.GooglePlayServicesUtil.showErrorNotification 
12-05 11:16:08.406 6931-6931/it.home.dressgallery E/dalvikvm﹕ Could not find class 'android.app.Notification$Builder', referenced from method com.google.android.gms.common.l.c 
12-05 11:16:08.601 6931-6931/it.home.dressgallery E/AndroidRuntime﹕ FATAL EXCEPTION: main 
    java.lang.NullPointerException 
      at com.google.maps.api.android.lib6.c.aa.b(Unknown Source) 
      at com.google.android.gms.maps.internal.x.onTransact(SourceFile:115) 
      at android.os.Binder.transact(Binder.java:279) 
      at com.google.android.gms.maps.internal.IMapFragmentDelegate$a$a.onResume(Unknown Source) 
      at com.google.android.gms.maps.SupportMapFragment$a.onResume(Unknown Source) 
      at com.google.android.gms.dynamic.a$7.b(Unknown Source) 
      at com.google.android.gms.dynamic.a.a(Unknown Source) 
      at com.google.android.gms.dynamic.a.onResume(Unknown Source) 
      at com.google.android.gms.maps.SupportMapFragment.onResume(Unknown Source) 
      at android.support.v4.app.Fragment.performResume(Fragment.java:1547) 
      at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:978) 
      at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1121) 
      at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682) 
      at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1484) 
      at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:482) 
      at android.support.v4.app.FragmentStatePagerAdapter.finishUpdate(FragmentStatePagerAdapter.java:163) 
      at android.support.v4.view.ViewPager.populate(ViewPager.java:1073) 
      at android.support.v4.view.ViewPager.populate(ViewPager.java:919) 
      at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1441) 
      at android.view.View.measure(View.java:8366) 
      at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 
      at android.widget.FrameLayout.onMeasure(FrameLayout.java:250) 
      at android.view.View.measure(View.java:8366) 
      at android.widget.LinearLayout.measureVertical(LinearLayout.java:531) 
      at android.widget.LinearLayout.onMeasure(LinearLayout.java:309) 
      at android.view.View.measure(View.java:8366) 
      at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 
      at android.widget.FrameLayout.onMeasure(FrameLayout.java:250) 
      at android.view.View.measure(View.java:8366) 
      at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 
      at android.widget.FrameLayout.onMeasure(FrameLayout.java:250) 
      at android.view.View.measure(View.java:8366) 
      at android.view.ViewRoot.performTraversals(ViewRoot.java:844) 
      at android.view.ViewRoot.handleMessage(ViewRoot.java:1865) 
      at android.os.Handler.dispatchMessage(Handler.java:99) 
      at android.os.Looper.loop(Looper.java:130) 
      at android.app.ActivityThread.main(ActivityThread.java:3687) 
      at java.lang.reflect.Method.invokeNative(Native Method) 
      at java.lang.reflect.Method.invoke(Method.java:507) 
      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842) 
      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) 
      at dalvik.system.NativeStart.main(Native Method) 

내 AndroidManifest.xml에 있습니다 : 여기

내 로그 고양이 :

package it.home.dressgallery; 

import android.app.FragmentTransaction; 
import android.os.Bundle; 
import android.support.v4.app.Fragment; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.AdapterView; 
import android.widget.ListView; 
import android.widget.Toast; 

import com.google.android.gms.maps.CameraUpdateFactory; 
import com.google.android.gms.maps.GoogleMap; 
import com.google.android.gms.maps.SupportMapFragment; 
import com.google.android.gms.maps.model.BitmapDescriptorFactory; 
import com.google.android.gms.maps.model.CameraPosition; 
import com.google.android.gms.maps.model.LatLng; 
import com.google.android.gms.maps.model.Marker; 
import com.google.android.gms.maps.model.MarkerOptions; 

/** 
* Created by tank on 04/12/14. 
*/ 
public class MapsFragment extends SupportMapFragment { 

    private GoogleMap googleMap; 

    // latitude and longitude 
    double latitude = 17.385044; 
    double longitude = 78.486671; 

    static final LatLng HAMBURG = new LatLng(53.558, 9.927); 
    static final LatLng KIEL = new LatLng(53.551, 9.993); 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 

     View view = inflater.inflate(R.layout.maps_layout, container, false); 

     initializeMap(); 
     myAddMarker(latitude, longitude, BitmapDescriptorFactory.HUE_ORANGE); 
     googleMap.setMyLocationEnabled(true); // false to disable 
     googleMap.getUiSettings().setZoomControlsEnabled(false); // true to enable 
     googleMap.getUiSettings().setCompassEnabled(true); 
     googleMap.getUiSettings().setMyLocationButtonEnabled(true); 
     //googleMap.getUiSettings().setRotateGesturesEnabled(true); 

     Marker hamburg = googleMap.addMarker(new MarkerOptions().position(HAMBURG) 
       .title("Hamburg")); 
     Marker kiel = googleMap.addMarker(new MarkerOptions() 
       .position(KIEL) 
       .title("Kiel") 
       .snippet("Kiel is cool") 
       .icon(BitmapDescriptorFactory 
         .fromResource(R.drawable.ic_launcher))); 

     // Move the camera instantly to hamburg with a zoom of 15. 
     googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(HAMBURG, 15)); 

     // Zoom in, animating the camera. 
     googleMap.animateCamera(CameraUpdateFactory.zoomTo(10), 2000, null); 

     return view; 
    } 

    /** 
    * function to load map. If map is not created it will create it for you 
    * */ 
    private void initializeMap() { 
     if (googleMap == null) { 
      googleMap = ((SupportMapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap(); 

      // check if map is created successfully or not 
      if (googleMap == null) { 
       Toast.makeText(getActivity().getApplicationContext(),"Sorry! unable to create maps", Toast.LENGTH_SHORT).show(); 
      } 
     } 
    } 

    /** 
    * Function to add a marker on the map 
    * @param latitude 
    * @param longitude 
    * @param color 
    */ 
    public void myAddMarker(double latitude, double longitude, float color){ 

     // create and add marker 
     Marker marker = googleMap.addMarker(new MarkerOptions().position(new LatLng(latitude, longitude)) 
       .title("Hello Maps ").icon(BitmapDescriptorFactory.defaultMarker(color))); 

    } 

    /** 
    * Apart from maps native marker icons, you can use own image to show as a marker. You can load the icon from any kind of supported sources. 
    * fromAsset(String assetName) – Loading from assets folder 
    * fromBitmap (Bitmap image) – Loading bitmap image 
    * fromFile (String path) – Loading from file 
    * fromResource (int resourceId) – Loading from drawable resource 
    */ 
    public void myAddMarkerCustom(double latitude, double longitude, int my_marker_icon){ 

     // create marker 
     MarkerOptions marker = new MarkerOptions().position(new LatLng(latitude, longitude)).title("Hello Maps"); 

     // Changing marker icon 
     marker.icon(BitmapDescriptorFactory.fromResource(my_marker_icon)); 

     // adding marker 
     googleMap.addMarker(marker); 
    } 

    public void moveToPosition(long latitude, long longitude, float zoom){ 
     CameraPosition cameraPosition = new CameraPosition.Builder().target(
       new LatLng(latitude, longitude)).zoom(zoom).build(); 

     googleMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition)); 
    } 

    /** 
    * googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL); 
    * googleMap.setMapType(GoogleMap.MAP_TYPE_HYBRID); 
    * googleMap.setMapType(GoogleMap.MAP_TYPE_SATELLITE); 
    * googleMap.setMapType(GoogleMap.MAP_TYPE_TERRAIN); 
    * googleMap.setMapType(GoogleMap.MAP_TYPE_NONE); 
    */ 
    public void myChangeMap(int type){ 
     googleMap.setMapType(type); 
    } 

    private class DrawerItemClickListener implements ListView.OnItemClickListener { 
     @Override 
     public void onItemClick(AdapterView parent, View view, int position, long id) { 
      //selectItem(position); 
      //TODO...add something to do 
     } 
    } 

} 

나는 누군가가 나를 도울 수 있기를 바란다. 감사!!!

super.onCreateView(inflater, container, savedInstanceState); 

당신의 onCreateView() 방법이없는 쓸모 :

Answer 1

는 어디 Fragment

그래서이 솔루션은 다음 줄을 추가하는 것입니다 당신의 super.onCreateView입니다.

해결 방법 :

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
    super.onCreateView(inflater, container, savedInstanceState); 

    View view = inflater.inflate(R.layout.maps_layout, container, false); 

    initializeMap(); 
    myAddMarker(latitude, longitude, BitmapDescriptorFactory.HUE_ORANGE); 
    googleMap.setMyLocationEnabled(true); // false to disable 
    googleMap.getUiSettings().setZoomControlsEnabled(false); // true to enable 
    googleMap.getUiSettings().setCompassEnabled(true); 
    googleMap.getUiSettings().setMyLocationButtonEnabled(true); 
    //googleMap.getUiSettings().setRotateGesturesEnabled(true); 

    Marker hamburg = googleMap.addMarker(new MarkerOptions().position(HAMBURG) 
      .title("Hamburg")); 
    Marker kiel = googleMap.addMarker(new MarkerOptions() 
      .position(KIEL) 
      .title("Kiel") 
      .snippet("Kiel is cool") 
      .icon(BitmapDescriptorFactory 
        .fromResource(R.drawable.ic_launcher))); 

    // Move the camera instantly to hamburg with a zoom of 15. 
    googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(HAMBURG, 15)); 

    // Zoom in, animating the camera. 
    googleMap.animateCamera(CameraUpdateFactory.zoomTo(10), 2000, null); 

    return view; 
}