的Android SupportMapFragment異常錯誤

Question

我嘗試使用新的谷歌遊戲服務庫和embbed地圖在一側的地圖片段如下

PlaceMapsFragment.java

public class PlaceMapsFragment extends SupportMapFragment { 
    private GoogleMap mMap; 
    private LatLng mPosFija; 

    public PlaceMapsFragment() { 
     super(); 
    } 

    public static PlaceMapsFragment newInstance(LatLng posicion) { 
     PlaceMapsFragment frag = new PlaceMapsFragment(); 
     frag.mPosFija = posicion; 
     return frag; 
    } 

    @Override 
    public GoogleMap getMap() { 
     // TODO Auto-generated method stub 
     return super.getMap(); 
    } 

    @Override 
    public void onCreate(Bundle arg0) { 
     // TODO Auto-generated method stub 
     super.onCreate(arg0); 
    } 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
      Bundle savedInstanceState) { 
     View view = super.onCreateView(inflater, container, savedInstanceState); 
     //initMap(); 
     return view; 
    } 

    private void initMap() { 
     UiSettings settings = getMap().getUiSettings(); 
     settings.setAllGesturesEnabled(false); 
     settings.setMyLocationButtonEnabled(false); 

     getMap().moveCamera(CameraUpdateFactory.newLatLngZoom(mPosFija, 16)); 
     getMap().addMarker(
       new MarkerOptions().position(mPosFija) 
         .icon(BitmapDescriptorFactory 
           .fromResource(R.drawable.marker))); 
    } 

} 

錯誤

12-10 01:44:54.416: E/AndroidRuntime(32716): FATAL EXCEPTION: main 
12-10 01:44:54.416: E/AndroidRuntime(32716): java.lang.NullPointerException 
12-10 01:44:54.416: E/AndroidRuntime(32716): at maps.ar.b.a(Unknown Source) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at maps.y.h.a(Unknown Source) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at maps.y.au.a(Unknown Source) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at maps.y.ae.moveCamera(Unknown Source) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at com.google.android.gms.maps.internal.IGoogleMapDelegate$Stub.onTransact(IGoogleMapDelegate.java:83) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.os.Binder.transact(Binder.java:297) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at com.google.android.gms.maps.internal.IGoogleMapDelegate$a$a.moveCamera(Unknown Source) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at com.google.android.gms.maps.GoogleMap.moveCamera(Unknown Source) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at com.m7.nomad.PlaceMapsFragment.initMap(PlaceMapsFragment.java:55) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at com.m7.nomad.PlaceMapsFragment.onCreateView(PlaceMapsFragment.java:46) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1460) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:911) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1088) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1444) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:461) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at com.m7.nomad.PlaceActivity$TabManager.onTabChanged(PlaceActivity.java:153) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.widget.TabHost.invokeOnTabChangeListener(TabHost.java:379) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.widget.TabHost.setCurrentTab(TabHost.java:364) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.widget.TabHost$2.onTabSelectionChanged(TabHost.java:150) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.widget.TabWidget$TabClickListener.onClick(TabWidget.java:540) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.view.View.performClick(View.java:3591) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.view.View$PerformClick.run(View.java:14263) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.os.Handler.handleCallback(Handler.java:605) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.os.Handler.dispatchMessage(Handler.java:92) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.os.Looper.loop(Looper.java:137) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at android.app.ActivityThread.main(ActivityThread.java:4507) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at java.lang.reflect.Method.invokeNative(Native Method) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at java.lang.reflect.Method.invoke(Method.java:511) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557) 
12-10 01:44:54.416: E/AndroidRuntime(32716): at dalvik.system.NativeStart.main(Native Method) 

清單文件

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.m7.nomad" 
    android:versionCode="1" 
    android:versionName="1.0" > 

    <uses-sdk 
     android:minSdkVersion="8" 
     android:targetSdkVersion="16" /> 

    <permission 
     android:name="com.example.newmapview.permission.MAPS_RECEIVE" 
     android:protectionLevel="signature" /> 

    <uses-permission android:name="com.example.newmapview.permission.MAPS_RECEIVE" /> 
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> 
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> 
    <uses-permission android:name="android.permission.INTERNET" /> 
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" /> 

    <application 
     android:allowBackup="true" 
     android:icon="@drawable/ic_launcher" 
     android:label="@string/app_name" 
     android:theme="@style/Theme.Sherlock" > 
     <activity 
      android:name="com.m7.nomad.SplashActivity" 
      android:label="@string/app_name" > 
     </activity> 
     <activity 
      android:name="com.m7.nomad.MainActivity" 
      android:label="@string/app_name" > 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 

       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
     </activity> 
     <activity 
      android:name="com.m7.nomad.PlaceActivity" 
      android:label="@string/app_name" > 
     </activity> 

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

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

</manifest> 

我有具有TabHost其中附加了兩個片段一個SherlockFragmentActivity。我想呈現地圖內的標籤片段之一

編輯

我有要顯示的地圖，但現在我不能夠參照地圖和更改地圖混合。基本上我需要引用地圖與出錯空。

Answer 1

在onCreateView()必須調用它的父。檢查我的解決方案在https://stackoverflow.com/a/13734470/835787附近。該映射在MapFragment的onCreateView（）方法中初始化，如果您不調用它，映射將爲空。

Answer 2

我不知道的是它可以幫助或沒有，但你應該設置你的包這裏：

<permission 
    android:name="com.example.newmapview.permission.MAPS_RECEIVE" 
    android:protectionLevel="signature" /> 

<uses-permission android:name="com.example.newmapview.permission.MAPS_RECEIVE" /> 

Answer 3

1. super.onCreate（savedInstanceState）;應的onCreate（）被調用，而不是onCreateView（）

2. 如果你想覆蓋onCreateView（），它應該是這樣的：

   @Override 
   public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
       View v = super.onCreateView(inflater, container, savedInstanceState); 
   
       // Do any other initialization you need, but note that the MapView already exists inside v 
   
       setUpMapIfNeeded(v); 
       return v; 
   } 
   

Answer 4

我通過檢查「複製解決了這個錯誤投影到工作區「，同時導入Google Play服務庫。
這裏更多的信息：http://developer.android.com/google/play-services/setup.html