我有一个ViewPager，其中一个Fragment是一个ListView，另一个是地图，当我尝试添加地图应用程序崩溃时，我尝试使用支持库而没有..不起作用所以我会把错误日志，如果有人知道thnks
05-26 16:21:50.595: E/AndroidRuntime(13463): FATAL EXCEPTION: main
05-26 16:21:50.595: E/AndroidRuntime(13463): Process: com.infosports.actividadesdeportivasb, PID: 13463
05-26 16:21:50.595: E/AndroidRuntime(13463): java.lang.NullPointerException
05-26 16:21:50.595: E/AndroidRuntime(13463): at com.infosports.fracss.FracMap.onCreateView(FracMap.java:24)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1500)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:927)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1467)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:472)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.support.v4.view.ViewPager.populate(ViewPager.java:1068)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.support.v4.view.ViewPager.populate(ViewPager.java:914)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1436)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.view.View.measure(View.java:16537)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5135)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.view.View.measure(View.java:16537)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.widget.ScrollView.measureChildWithMargins(ScrollView.java:1226)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.widget.ScrollView.onMeasure(ScrollView.java:326)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.view.View.measure(View.java:16537)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5135)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.view.View.measure(View.java:16537)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5135)
05-26 16:21:50.595: E/AndroidRuntime(13463): at com.android.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:327)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.view.View.measure(View.java:16537)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5135)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
05-26 16:21:50.595: E/AndroidRuntime(13463): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2291)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.view.View.measure(View.java:16537)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1947)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1137)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1326)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1024)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5796)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.view.Choreographer.doCallbacks(Choreographer.java:574)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.view.Choreographer.doFrame(Choreographer.java:544)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.os.Handler.handleCallback(Handler.java:733)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.os.Handler.dispatchMessage(Handler.java:95)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.os.Looper.loop(Looper.java:136)
05-26 16:21:50.595: E/AndroidRuntime(13463): at android.app.ActivityThread.main(ActivityThread.java:5102)
05-26 16:21:50.595: E/AndroidRunleme istime(13463): at java.lang.reflect.Method.invokeNative(Native Method)
05-26 16:21:50.595: E/AndroidRuntime(13463): at java.lang.reflect.Method.invoke(Method.java:515)
05-26 16:21:50.595: E/AndroidRuntime(13463): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
05-26 16:21:50.595: E/AndroidRuntime(13463): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
05-26 16:21:50.595: E/AndroidRuntime(13463): at dalvik.system.NativeStart.main(Native Method)
我想这个问题在课堂上
public class FracMap extends Fragment {
View rootView;
MapFragment mapView;
// GoogleMap map;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
rootView=inflater.inflate(R.layout.frac_maps, container, false);
GoogleMap mapa = ((MapFragment) getActivity().getFragmentManager()
.findFragmentById(R.id.map)).getMap();
return rootView;
}
public static FracMap map(){
return new FracMap();
}
}
manifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.infosports.actividadesdeportivasb"
android:versionCode="1"
android:versionName="1.0">
<permission
android:name="com.example.androidmapsv2.permission.MAPS_RECEIVE"
android:protectionLevel="signature"></permission>
<uses-permission
android:name="com.infosports.actividadesdeportivasb"/>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="19" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true"/>
<application
android:allowBackup="true"
android:icon="@drawable/path3190"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="got this"/>
<meta-data android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
<uses-library android:name="com.google.android.maps" />
<activity
android:name="com.infosports.actividadesdeportivasb.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:configChanges="orientation|screenSize"
android:name="com.infosports.actividadesdeportivasb.SelectedActivity"
android:label="@string/app_name" >
</activity>
<activity
android:name="com.infosports.actividadesdeportivasb.InfoNews"
android:label="@string/app_name" >
</activity>
</application>
</manifest>
布局
<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.SupportMapFragment"/>
答案 0 :(得分：0)
在布局中使用此特定SupportMapFragment类时，您必须按如下方式处理getSupportMapFragment()方法：
GoogleMap mapa = ((SupportMapFragment) getActivity().getSupportFragmentManager()
.findFragmentById(R.id.map)).getMap();
如果有帮助，请告诉我。