Dialog disappears after rotation

[anlalalu]

Describe the bug Dialog disappears after rotation.

To Reproduce Steps to reproduce the behavior:

1. tap 'properties'
2. tap 'Rename' and a dialog appears
3. rotate the screen

Expected behavior The dialog still exists with no error log.

Screenshots If applicable, add screenshots to help explain your problem.

Smartphone (please complete the following information):

• Device: emulator
• OS: Android 4.4.4
• Rooted: No
• Version: 3.3.2

Additional context Add any other context about the problem here.

Stack Trace E/WindowManager: android.view.WindowLeaked: Activity com.amaze.filemanager.activities.MainActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{52ad9290 V.E..... R....... 0,0-656,367} that was originally added here at android.view.ViewRootImpl.(ViewRootImpl.java:346) at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:248) at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69) at android.app.Dialog.show(Dialog.java:286) at com.afollestad.materialdialogs.MaterialDialog.show(MaterialDialog.java:464) at com.afollestad.materialdialogs.MaterialDialog$Builder.show(MaterialDialog.java:2189) at com.amaze.filemanager.ui.dialogs.GeneralDialogCreation.showNameDialog(GeneralDialogCreation.java:172) at com.amaze.filemanager.fragments.MainFragment.rename(MainFragment.java:1202) at com.amaze.filemanager.ui.ItemPopupMenu.onMenuItemClick(ItemPopupMenu.java:100) at android.widget.PopupMenu.onMenuItemSelected(PopupMenu.java:201) at com.android.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:741) at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:152) at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:884) at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:874) at com.android.internal.view.menu.MenuPopupHelper.onItemClick(MenuPopupHelper.java:177) at android.widget.AdapterView.performItemClick(AdapterView.java:299) at android.widget.AbsListView.performItemClick(AbsListView.java:1113) at android.widget.AbsListView$PerformClick.run(AbsListView.java:2911) at android.widget.AbsListView$3.run(AbsListView.java:3645) at android.os.Handler.handleCallback(Handler.java:733) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5001) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601) at dalvik.system.NativeStart.main(Native Method)

[anlalalu]

Do you judge this as a defect? Maybe can be solved with reference to this: https://stackoverflow.com/questions/2850573/activity-has-leaked-window-that-was-originally-added.

[TranceLove]

Yes, symptom can be reproduced on Android emulators running 4.4.4 and 5.1.1 too.

[TranceLove]

The problem seems to be harder to fix than expected.

A better way as people suggest will be putting the dialogs inside DialogFragment like this, and this will cause the code to stink further, though I doubt if it's really necessary to port the 43 (found by searching MaterialDialog.Builder) dialogs into DialogFragments.

Thoughts? @EmmanuelMess @VishalNehra @bowiechen

[EmmanuelMess]

@TranceLove what is a leaked window and why is the window leaked?

Edit: it seems we are showing a dialog from a destroyed Activity.

Edit 2: Please remember the MainFragment is set to not be destroyed when the phone rotates, but the Activity does get destroyed.

[VishalNehra]

But some of the dialogs do have fragments, like SftpConnectDialog. We can try to fix this leak for them and verify. BTW I don't see a problem with migrating to fragments. Actually it'll be better code.

[TranceLove]

And looking over the code again, as many dialogs shares the same layouts, the conversion process may not be so horrible as it seems, depends on how much abstraction we can make.

[EmmanuelMess]

Having as class per dialog is a good idea IMO, as long as we don't have all in the same package.

[VishalNehra]

Dupe #1657