API di Google Maps v2 in Dialog

Question

Sto tentando di visualizzare GMaps in una finestra di dialogo, può essere eseguita?

ho il layout

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
style="@style/LoginFormContainer" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:padding="0dp" > 

<fragment 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/mapView" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentLeft="true" 
    android:layout_alignParentRight="true" 
    android:layout_alignParentTop="true" 
    class="com.google.android.gms.maps.MapFragment" 
    android:gravity="center" /> 

</RelativeLayout> 

e im gonfiare questo XML in un dialogo, come qui di seguito ...

LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    View layout = inflater.inflate(R.layout.dialog_location, null); 

    AlertDialog.Builder builder = new AlertDialog.Builder(context).setView(layout); 
    AlertDialog alertDialog = builder.create(); 
    alertDialog.show(); 

Ma, durante l'inflazione, si verificano errori di runtime ...

02-02 12:52:56.045: W/dalvikvm(23044): threadid=1: thread exiting with uncaught exception (group=0x40f862a0) 
02-02 12:52:56.050: E/AndroidRuntime(23044): FATAL EXCEPTION: main 
02-02 12:52:56.050: E/AndroidRuntime(23044): android.view.InflateException: Binary XML file line #8: Error inflating class fragment 
02-02 12:52:56.050: E/AndroidRuntime(23044): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at android.view.LayoutInflater.rInflate(LayoutInflater.java:746) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at android.view.LayoutInflater.inflate(LayoutInflater.java:489) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at android.view.LayoutInflater.inflate(LayoutInflater.java:352) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at com.amithgc.taskflow.handler.activationMethods.dialog.ActivationLocationDialog.show(ActivationLocationDialog.java:31) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at com.amithgc.taskflow.handler.activationMethods.ActivationMethodLocation.showLinkingPopup(ActivationMethodLocation.java:37) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at com.amithgc.taskflow.profile.ActivationMethodItemView$1.onClick(ActivationMethodItemView.java:62) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at android.view.View.performClick(View.java:4223) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at android.view.View$PerformClick.run(View.java:17275) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at android.os.Handler.handleCallback(Handler.java:615) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at android.os.Handler.dispatchMessage(Handler.java:92) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at android.os.Looper.loop(Looper.java:137) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at android.app.ActivityThread.main(ActivityThread.java:4898) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at java.lang.reflect.Method.invokeNative(Native Method) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at java.lang.reflect.Method.invoke(Method.java:511) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1008) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:775) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at dalvik.system.NativeStart.main(Native Method) 
02-02 12:52:56.050: E/AndroidRuntime(23044): Caused by: android.app.Fragment$InstantiationException: Unable to instantiate fragment com.google.android.gms.maps.MapFragment: make sure class name exists, is public, and has an empty constructor that is public 
02-02 12:52:56.050: E/AndroidRuntime(23044): at android.app.Fragment.instantiate(Fragment.java:584) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at android.app.Fragment.instantiate(Fragment.java:552) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at android.app.Activity.onCreateView(Activity.java:4834) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:680) 
02-02 12:52:56.050: E/AndroidRuntime(23044): ... 18 more 
02-02 12:52:56.050: E/AndroidRuntime(23044): Caused by: java.lang.ClassNotFoundException: com.google.android.gms.maps.MapFragment 
02-02 12:52:56.050: E/AndroidRuntime(23044): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at java.lang.ClassLoader.loadClass(ClassLoader.java:501) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at java.lang.ClassLoader.loadClass(ClassLoader.java:461) 
02-02 12:52:56.050: E/AndroidRuntime(23044): at android.app.Fragment.instantiate(Fragment.java:574) 
02-02 12:52:56.050: E/AndroidRuntime(23044): ... 21 more 

Qualcuno può aiutarmi per favore con questo ??

Answer 1

Non si può gonfiare un layout in un frammento in cui il layout include un frammento http://developer.android.com/about/versions/android-4.2.html#NestedFragments

MapFragment dovrebbe essere aggiunto in modo dinamico in codice, ad esempio:

MapFragment fragment = new MapFragment(); 
FragmentTransaction transaction = getChildFragmentManager().beginTransaction(); 
transaction.add(R.id.mapView, fragment).commit(); 

e nel layout xml:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
style="@style/LoginFormContainer" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:padding="0dp" > 

<FrameLayout 
    android:id="@+id/mapView" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" > 
</FrameLayout> 

</RelativeLayout>