Bug 15029 - OnConfigurationChange() not called on Android API 13 and above
Summary: OnConfigurationChange() not called on Android API 13 and above
Alias: None
Product: Android
Classification: Xamarin
Component: Mono runtime / AOT Compiler ()
Version: 4.8.x
Hardware: Macintosh Mac OS
: --- normal
Target Milestone: ---
Assignee: Jonathan Pryor
Depends on:
Reported: 2013-09-26 20:43 UTC by Jon Goldberger [MSFT]
Modified: 2013-09-27 13:58 UTC (History)
1 user (show)

Is this bug a regression?: ---
Last known good build:

Test Case (11.06 KB, application/zip)
2013-09-26 20:43 UTC, Jon Goldberger [MSFT]

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Description Jon Goldberger [MSFT] 2013-09-26 20:43:46 UTC
Created attachment 5000 [details]
Test Case

I recently found out that many devices on the Play Store were being blocked because I had set my minimum API to 8 and my Target API to 8. I recently moved my Target API to 14 but now my screens go blank when I rotate them. I need a minimum of API 8 but I also need to at least get out to API 14. In searching the internet I find common solutions of

[Activity(Label = "TallyMaster9", ConfigurationChanges = Android.Content.PM.ConfigChanges.Orientation, Theme = "@layout/splash", MainLauncher = true, Icon = "@drawable/tm")]

And or

android:configChanges="orientation|screenSize" in the manifest

in either/or case I can no longer trigger OnConfigurationChanged to manage the screen orientation change.
This all works with a target API of 12 or lower. 
But neither of the above methods work to call OnConfigurationChange() with an orientation change with target API of 13+
Comment 2 Jonathan Pryor 2013-09-26 21:34:52 UTC
Please specify both ConfigChanges.Orientation and ConfigChanges.ScreenSize within ActivityAttribute:

  [Activity (Label = "TallyMaster9",
      ConfigurationChanges = ConfigChanges.Orientation
  #if __ANDROID_13__
        | ConfigChanges.ScreenSize,
      Theme = "@layout/splash",
      Icon = "@drawable/tm",
      MainLauncher = true)]

(The wrapping of ConfigChanges.ScreenSize within `#if __ANDROID_13__` is so that you can easily set the $(TargetFrameworkVersion) to something prior to Android v3.2 without getting compilation issues because of specifying ConfigChanges.ScreenSize.)

> And or
> android:configChanges="orientation|screenSize" in the manifest

_How_ did you edit the manifest? Editing the manifest can be tricky. You may want to view e.g. obj\Debug\android\AndroidManifest.xml to ensure that it contains what you think it contains.