On Oct 28, 5:54 pm, skataben <[email protected]> wrote: > My app creates a simple ListActivity. I want the ListView's context > menu to stay on the screen when it rotates, so I cache the selected > item's position. When the activity resumes I call openContextMenu > (getListView()) and use the cached item's position to retrieve the > ListView item's info. The info is successfully restored (as observed > in the debugger), but the app crashes somewhere after > onCreateContextMenu() is finished executing. > > The debugger gives me the following info, but I don't know exactly > what it means: > > 10-28 15:29:50.548: INFO/WindowManager(61): onOrientationChanged, > rotation changed to 0 > 10-28 15:29:50.808: WARN/WindowManager(61): Requested window null does > not exist > 10-28 15:29:50.808: WARN/WindowManager(61): java.lang.RuntimeException > 10-28 15:29:50.808: WARN/WindowManager(61): at > com.android.server.WindowManagerService.windowForClientLocked > (WindowManagerService.java:7377) > 10-28 15:29:50.808: WARN/WindowManager(61): at > com.android.server.WindowManagerService.addWindow > (WindowManagerService.java:1145) > 10-28 15:29:50.808: WARN/WindowManager(61): at > com.android.server.WindowManagerService$Session.add > (WindowManagerService.java:5267) > 10-28 15:29:50.808: WARN/WindowManager(61): at > android.view.IWindowSession$Stub.onTransact(IWindowSession.java:74) > 10-28 15:29:50.808: WARN/WindowManager(61): at > com.android.server.WindowManagerService$Session.onTransact > (WindowManagerService.java:5240) > 10-28 15:29:50.808: WARN/WindowManager(61): at > android.os.Binder.execTransact(Binder.java:287) > 10-28 15:29:50.808: WARN/WindowManager(61): at > dalvik.system.NativeStart.run(Native Method) > 10-28 15:29:50.808: WARN/WindowManager(61): Attempted to add window > with token that is not a window: null. Aborting. > > What am I doing wrong? > > public class LoginActivity extends ListActivity implements Runnable { > > private int mContextMenuPosition = -1; > > @Override > public void onCreate(Bundle icicle) { > ... > registerForContextMenu(getListView()); > ... > } > > @Override > public void onCreateContextMenu(ContextMenumenu, View v, > ContextMenuInfo menuInfo) { > try { > int position; > super.onCreateContextMenu(menu, v, menuInfo); > AdapterContextMenuInfo info = (AdapterContextMenuInfo) > menuInfo; > position = (info == null) ? mContextMenuPosition : > info.position; > ....more stuff > } > catch ( Exception ex ) { // exception not caught, so the > problem is > elsewhere > toastException( ex ); > logException(ex); > } > > @Override > protected void onSaveInstanceState(Bundle outState) { > outState.putInt("contextMenuPosition", mContextMenuPosition); > } > > @Override > protected void onRestoreInstanceState( Bundle inState ){ > if ( inState.containsKey("contextMenuPosition") ) { > mContextMenuPosition = > inState.getInt("contextMenuPosition"); > } > } > > @Override > protected void onResume() { > super.onResume(); > if ( mContextMenuPosition > 0 ) { > openContextMenu(getListView()); > } > } > > }; > >
I'm also looking for a way to avoid the ContextMenu to disappear when screen rotates. Anyone did it? -- You received this message because you are subscribed to the Google Groups "Android Beginners" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
