On Nov 2, 11:16 pm, Macarse <[email protected]> wrote: > 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?
Found the solution. Check: * http://stackoverflow.com/questions/1664472/persisting-a-context-menu-after-screen-rotation/1673374#1673374 * http://www.devx.com/wireless/Article/40792/1763/page/5 * http://stackoverflow.com/questions/456211/activity-restart-on-rotation-android Hope it's useful. -- 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
