Getting java.lang.IllegalStateException: You are only allowed to have a single MapView in a MapActivity Exception when using MapView for fragments

[Nikhil Shah]

Hi,
Thank you for providing a hack lib for MapView.
My implementation of mapView is successful except that I get an error
when I call
getActivity().onBackPressed();
from another fragment(other then map fragment)
Here is a detailed information about the exception I am getting.

App for: Mobile
Version: Android 2.2
Supporting file used: android-support-v13-r6-googlemaps.jar

Senario:
1. I have created a Activity which extends FramentActivity(supported
from the lib provided)
2. I have created 2 fragments.
a. MapFragment - which has its own layout and this layout contains
mapview
b. InformationFragment - which has its own layout and DONOT have
mapview. it contains table layout and other stuff
3. I have button in layout for InformationFragment which will call
getActivity().onBackPressed();

When I press this button or press back button on the device following
is the exception I am getting

01-10 09:54:38.141: E/AndroidRuntime(9726): FATAL EXCEPTION: main
01-10 09:54:38.141: E/AndroidRuntime(9726):
android.view.InflateException: Binary XML file line #5: Error
inflating class
01-10 09:54:38.141: E/AndroidRuntime(9726): at
android.view.LayoutInflater.createView(LayoutInflater.java:513)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:565)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
android.view.LayoutInflater.rInflate(LayoutInflater.java:618)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
android.view.LayoutInflater.inflate(LayoutInflater.java:407)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
android.view.LayoutInflater.inflate(LayoutInflater.java:320)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
com.mid.kew.activities.MapFragment.onCreateView(MapFragment.java:78)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
android.support.v4.app.FragmentManagerImpl.moveToState(Unknown Source)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
android.support.v4.app.FragmentManagerImpl.moveToState(Unknown Source)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
android.support.v4.app.BackStackRecord.popFromBackStack(Unknown
Source)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
android.support.v4.app.FragmentManagerImpl.popBackStackState(Unknown
Source)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
android.support.v4.app.FragmentManagerImpl.popBackStackImmediate(Unknown
Source)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
android.support.v4.app.FragmentActivity.onBackPressed(Unknown Source)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
com.mid.kew.activities.CustomiseMapMainFragment
$1.onClick(CustomiseMapMainFragment.java:66)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
android.view.View.performClick(View.java:2461)
01-10 09:54:38.141: E/AndroidRuntime(9726): at android.view.View
$PerformClick.run(View.java:8888)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
android.os.Handler.handleCallback(Handler.java:587)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
android.os.Handler.dispatchMessage(Handler.java:92)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
android.os.Looper.loop(Looper.java:123)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
android.app.ActivityThread.main(ActivityThread.java:4627)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
java.lang.reflect.Method.invokeNative(Native Method)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
java.lang.reflect.Method.invoke(Method.java:521)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
com.android.internal.os.ZygoteInit
$MethodAndArgsCaller.run(ZygoteInit.java:858)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
dalvik.system.NativeStart.main(Native Method)
01-10 09:54:38.141: E/AndroidRuntime(9726): Caused by:
java.lang.reflect.InvocationTargetException
01-10 09:54:38.141: E/AndroidRuntime(9726): at
com.google.android.maps.MapView.(MapView.java:238)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
java.lang.reflect.Constructor.constructNative(Native Method)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
java.lang.reflect.Constructor.newInstance(Constructor.java:446)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
android.view.LayoutInflater.createView(LayoutInflater.java:500)
01-10 09:54:38.141: E/AndroidRuntime(9726): ... 23 more
01-10 09:54:38.141: E/AndroidRuntime(9726): Caused by:
java.lang.IllegalStateException: You are only allowed to have a single
MapView in a MapActivity
01-10 09:54:38.141: E/AndroidRuntime(9726): at
com.google.android.maps.MapActivity.setupMapView(MapActivity.java:379)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
com.google.android.maps.MapView.(MapView.java:280)
01-10 09:54:38.141: E/AndroidRuntime(9726): at
com.google.android.maps.MapView.(MapView.java:255)
01-10 09:54:38.141: E/AndroidRuntime(9726): ... 27 more

Following are the code snapshot on how the things are build

MapFragment -> onCreateView()
....
view = inflater.inflate(R.layout.map_page_layout, container, false);
mapView = (MapView) view.findViewById(R.id.mapview);
....

MapFragment Layout File -> map_page_layout
.....
android:id="@+id/mapview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:apiKey=
android:layout_alignParentTop="true"
android:clickable="true"/>
.....

InformationFragment -> BackButton ->

Button backButton = (Button) v.findViewById(R.id.backButton);
backButton.setOnClickListener(new OnClickListener() {

public void onClick(View v) {
getActivity().onBackPressed();

}});
Can you please let me know if I am missing something or is it a bug...
Its urgent as I have to meet the deadlines

Thank you
Nikhil

[Nikhil Shah]

I got my answer in other post thank you...
here is the answer

http://groups.google.com/group/android-support-v4-googlemaps-support/browse_thread/thread/5da4cf9e74a7de94

thank you
Nikhil