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# Steps to reproduce
1. Create Xamarin Forms project using Xamarin.Forms pre-220.127.116.11-pre6.
2. Create either a custom renderer or Dependency service that presents a UIImagePickerController on the foremost presented UIViewController.
3. Add code to invoke step 2 from PCL shared project.
4. Run (I tested on an iPad, and simulator is unavailable for this test)
# Expected behavior
In the stable 18.104.22.168 the camera feed is displayed with a corresponding overlay.
# Actual behavior
Blank white screen.
# Supplemental info (logs, images, videos)
# Test environment (full version information)
Visual Studio 2017 Latest Xamarin packages on both windows and mac machines.
Microsoft Visual Studio Professional 2017
Version 15.0.26228.9 D15RTWSVC
Microsoft .NET Framework
Installed Version: Professional
Visual Studio Tools for Universal Windows Apps 15.0.26228.00
The Visual Studio Tools for Universal Windows apps allow you to build a single universal app experience that can reach every device running Windows 10: phone, tablet, PC, and more. It includes the Microsoft Windows 10 Software Development Kit.
Xamarin 22.214.171.1244 (73f58d6)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.
Xamarin.Android SDK 126.96.36.199 (9578cdc)
Xamarin.Android Reference Assemblies and MSBuild support.
Xamarin.iOS and Xamarin.Mac SDK 10.4.0.123 (35d1ccd)
Xamarin.iOS and Xamarin.Mac Reference Assemblies and MSBuild support.
Thank you for filing this report!
This might be related: https://github.com/jamesmontemagno/MediaPlugin/issues/186
Are you invoking the UIImagePickerController from an ActionSheet?
You are totally correct, it is the same issue. I use the following code to present the UIImagePickerController (inside a custom renderer):
protected override void OnElementChanged(ElementChangedEventArgs<CameraView> e)
if (Control == null)
view = e.NewElement;
currentUIViewController = GetCurrentUIController();
private UIViewController GetCurrentUIController()
UIViewController currentController = UIApplication.SharedApplication.KeyWindow.RootViewController;
while (currentController.PresentedViewController != null)
currentController = currentController.PresentedViewController;
Created attachment 21079 [details]
I'm attaching the Media Plugin sample as a repro project. I've also opened a PR for a fix: https://github.com/xamarin/Xamarin.Forms/pull/848
### Steps to Reproduce
1. Run the attached iOS project
2. Press "Pick Photo"
3. Press "Okay" in the alert
### Expected Results
The UIImagePickerController will be presented
### Actual Results
The UIImagePickerController is not presented
Should be fixed on 2.3.5-pre1
Verified this bug on Simulator & device for xamarin.forms 188.8.131.526-pre6.
For both its working as expected.
gist link: https://gist.github.com/nehaKh/ea8a3b090d27c83f35bccf0d529bbeed