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POAndroid map view error: You are only allowed to have a single MapView in a MapActivity
 

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  1. POAndroid map view error: You are only allowed to have a single MapView in a MapActivity
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    <p>I am creating an app which has action bar and 2 tabs. like this:<img src="https://i.stack.imgur.com/QiKb3.png" alt="enter image description here"></p> <p>Tab1: on click should display some details of a place. Tab2: on click should display maps.</p> <p>I am using Fragments for this. </p> <p>My tablistener:</p> <pre><code>private class MyTabListener implements ActionBar.TabListener { @Override public void onTabSelected(Tab tab, android.support.v4.app.FragmentTransaction ft) { // TODO Auto-generated method stub if (tab.getPosition() == 0) { DetailsFragment fragment = new DetailsFragment(); ft.replace(android.R.id.content, fragment); } else { MapsFragment fragment = new MapsFragment(); ft.replace(android.R.id.content, fragment); //ft.commit(); } } </code></pre> <p>MapsFragment.java</p> <pre><code>public class MapsFragment extends MapFragment { private MapView map = null; private MyLocationOverlay me = null; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return (new FrameLayout(getActivity())); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); map = new MapView(getActivity(), "0rQAS47Cicu2t7z4w8Ev6A6de7QlbjvKyi8I-QQ"); map.setClickable(true); map.getController().setCenter( getPoint(40.76793169992044, -73.98180484771729)); map.getController().setZoom(17); map.setBuiltInZoomControls(true); Drawable marker = getResources().getDrawable(R.drawable.marker); marker.setBounds(0, 0, marker.getIntrinsicWidth(), marker.getIntrinsicHeight()); map.getOverlays().add(new SitesOverlay(marker)); me = new MyLocationOverlay(getActivity(), map); map.getOverlays().add(me); ((ViewGroup) getView()).addView(map); } @Override public void onResume() { super.onResume(); me.enableCompass(); } @Override public void onPause() { super.onPause(); me.disableCompass(); } private GeoPoint getPoint(double lat, double lon) { return (new GeoPoint((int) (lat * 1000000.0), (int) (lon * 1000000.0))); } private class SitesOverlay extends ItemizedOverlay&lt;OverlayItem&gt; { private List&lt;OverlayItem&gt; items = new ArrayList&lt;OverlayItem&gt;(); public SitesOverlay(Drawable marker) { super(marker); boundCenterBottom(marker); items.add(new OverlayItem(getPoint(40.748963847316034, -73.96807193756104), "UN", "United Nations")); items.add(new OverlayItem(getPoint(40.76866299974387, -73.98268461227417), "Lincoln Center", "Home of Jazz at Lincoln Center")); items.add(new OverlayItem(getPoint(40.765136435316755, -73.97989511489868), "Carnegie Hall", "Where you go with practice, practice, practice")); items.add(new OverlayItem(getPoint(40.70686417491799, -74.01572942733765), "The Downtown Club", "Original home of the Heisman Trophy")); populate(); } @Override protected OverlayItem createItem(int i) { return (items.get(i)); } @Override protected boolean onTap(int i) { Toast.makeText(getActivity(), items.get(i).getSnippet(), Toast.LENGTH_SHORT).show(); return (true); } @Override public int size() { return (items.size()); } } } </code></pre> <p>The problem is when i click on maps tab for the first time map appears. but wen i go to details tab and again come back to maps tab, my app crashes with an error:</p> <p>Logcat:</p> <pre><code>12-04 03:28:02.228: E/AndroidRuntime(14466): FATAL EXCEPTION: main 12-04 03:28:02.228: E/AndroidRuntime(14466): java.lang.IllegalStateException: You are only allowed to have a single MapView in a MapActivity 12-04 03:28:02.228: E/AndroidRuntime(14466): at com.google.android.maps.MapActivity.setupMapView(MapActivity.java:398) 12-04 03:28:02.228: E/AndroidRuntime(14466): at com.google.android.maps.MapView.&lt;init&gt;(MapView.java:289) 12-04 03:28:02.228: E/AndroidRuntime(14466): at com.google.android.maps.MapView.&lt;init&gt;(MapView.java:235) 12-04 03:28:02.228: E/AndroidRuntime(14466): at com.m7.nomad.MapsFragment.onCreate(MapsFragment.java:34) 12-04 03:28:02.228: E/AndroidRuntime(14466): at android.support.v4.app.FragmentManagerImpl.moveToState(Unknown Source) 12-04 03:28:02.228: E/AndroidRuntime(14466): at android.support.v4.app.FragmentManagerImpl.moveToState(Unknown Source) 12-04 03:28:02.228: E/AndroidRuntime(14466): at android.support.v4.app.BackStackRecord.run(Unknown Source) 12-04 03:28:02.228: E/AndroidRuntime(14466): at android.support.v4.app.FragmentManagerImpl.execPendingActions(Unknown Source) 12-04 03:28:02.228: E/AndroidRuntime(14466): at android.support.v4.app.FragmentManagerImpl$1.run(Unknown Source) 12-04 03:28:02.228: E/AndroidRuntime(14466): at android.os.Handler.handleCallback(Handler.java:725) 12-04 03:28:02.228: E/AndroidRuntime(14466): at android.os.Handler.dispatchMessage(Handler.java:92) 12-04 03:28:02.228: E/AndroidRuntime(14466): at android.os.Looper.loop(Looper.java:137) 12-04 03:28:02.228: E/AndroidRuntime(14466): at android.app.ActivityThread.main(ActivityThread.java:5039) 12-04 03:28:02.228: E/AndroidRuntime(14466): at java.lang.reflect.Method.invokeNative(Native Method) 12-04 03:28:02.228: E/AndroidRuntime(14466): at java.lang.reflect.Method.invoke(Method.java:511) 12-04 03:28:02.228: E/AndroidRuntime(14466): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 12-04 03:28:02.228: E/AndroidRuntime(14466): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 12-04 03:28:02.228: E/AndroidRuntime(14466): at dalvik.system.NativeStart.main(Native Method) </code></pre> <p>What is the problem. I know that MapView cant be inflated from fragment. But i used this technique: <a href="http://xrigau.wordpress.com/2012/03/22/howto-actionbarsherlock-mapfragment-listfragment/" rel="noreferrer">http://xrigau.wordpress.com/2012/03/22/howto-actionbarsherlock-mapfragment-listfragment/</a></p> <p>But still this doesn't work. I need some Help.</p>
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