Xamarin.Forms 1.4.3 pre3

If you are using Xamarin Studio you will need to install the nuget packages by unzipping the nuget and referencing the dlls/targets by hand until this bug is fixed: https://bugzilla.xamarin.com/show_bug.cgi?id=26205

We are currently not planning to release anything to stable until this is fixed, so no worries for stable users.


This release requires the usage of the Xamarin Alpha Channel to ensure a working debugger. If your debugger is still not working with your Xamarin.Forms PCL or native code, please file a bug against the debugger project directly. Please include all the information you can and the most concise reproduction you have.


  • Android ActivityIndicator Color property now works for Android 5.0+
  • WinPhone 8.0 ActivityIndicator Color property now works

API Changes

Xamarin.Forms.ItemsView now contains a protected virtual void UnhookContent (TVisual content) method. This method is used for unhooking or otherwise cleaning content after usage. While the risk is low, this can be a breaking change for you app if you happen to have provided a method with the same name and the same parameters on a subclass of ItemsView, e.g. ListView. Please check your code if this is the case.


  • XAMLC has been removed from this release.

Bug Fixes

  • Bug 31029 - [Windows Phone 8.1]Generating an Image via MemoryStream does not appear
  • Bug 30935 - NullReferenceException in ViewRenderer (Xamarin.Forms.Platform.Android)
  • Bug 30861 - Entry text has wrong default value on Android
  • Bug 30251 - MasterDetail page's right area of detail page cannot receive touch on spit mode
  • Bug 30169 - Compiled form with a dynamic resource reference throws a BindableObject:SetDynamicResource exception
  • Bug 30074 - Multiple DataTriggers on same data bound property don't always trigger (XAML)
  • Bug 29861 - latest pre-release screws up breakpoint debugging
  • Bug 29508 - [WinPhone] Clicking back button twice quickly form second page to exit app causes app to crash.
  • Bug 29453 - Navigation.PopAsync(false) in Entry.Completed handler => System.ArgumentException
  • Bug 29363 - Pushing and then popping a page modally in succession causes an exception.
  • Bug 29344 - Fix crash in messaging center / unsubscribe on callback - TableView Collection was modified enumeration operation may not execute
  • Bug 29270 - Xamarin.Forms OpenGlView is broken
  • Bug 29247 - iOS Device.OpenUri breaks with encoded params
  • Bug 29229 - Fix crash on ListView on Windows Phone
  • Bug 29128 - If VerticalOptions not explicitly set on a Slider on Android, the two parts of the Slider are separated when drawn
  • Bug 29107 - ScrollView text overlaps
  • Bug 29017 - Pin Clicked does not fire (iOS at least)
  • Bug 28952 - NullReferenceException when setting MainPage for first time in OnStart
  • Bug 28901 - WebView not allowing DOM Storage
  • Bug 28821 - Application crashes when ContentPage in TabbedPage has its IsVisible property set to false.
  • Bug 28796 - Crash on Tab change
  • Bug 28765 - Slider Value property binds OneWay by default
  • Bug 28689 - Xaml: Type argument mandatory for x:Array extension
  • Bug 28575 - listview header set to null
  • Bug 28545 - AbsoluteLayout attributes don't work in a style
  • Bug 28335 - NRE when pushing/popping a page quickly
  • Bug 28045 - [Android] ImageRenderer assumes that the control is a FormsImageView
  • Bug 28001 - TabbedPage: invisible tabs are not Disposed
  • Bug 27968 - Resource dictionary throws an Exception when inheriting from a subclass of ContentPage
  • Bug 27779 - Xamarin.Forms.ReadOnlyListAdapter.IndexOf throws NotImplementedExcpetion
  • Bug 27661 - ViewCell IsEnabled set to false does not disable a cell in a TableView
  • Bug 27606 - MasterDetailPage Detail is interactive even when Master is open when in Landscape
  • Bug 27537 - DatePicker control does not behave as other picker controls
  • Bug 27526 - Type ConstraintExpressionExtension not found in xmlns
  • Bug 27270 - Add GeneratedCodeAttribute to generated partial classes
  • Bug 27229 - Failure with SetBinding / [C] Allow Convert in path expressions
  • Bug 26455 - Color GetHashCode returns wrong results
  • Bug 26418 - [Android] ListView does not update when the bound ObservableCollection changes
  • Bug 25845 - Unhandled exception finalizing ListViewAdapter on Android
  • Bug 25662 - Setting IsEnabled does not disable SwitchCell in Forms listview
  • Bug 25400 - XAML x:TypeArguments does not support nested generic types
  • Bug 24910 - Nullable properties throw Property not found exception
  • Bug 24871 - Picker value doesn't get updated when Android "reuses" an old control
  • Bug 24258 - Xamlg issue when declaring generics separated by a space
  • Bug 21744 - Carousel Page iOS CurrentPage bug

Other Fixes

  • Android - Right edge of MasterDetailPage on tablet now handles touches
  • WinRT - First page of TabbedPage doesn't show up until a move or swipe
  • WinRT - ListView.ItemTapped does not fire for already selected items
  • WinRT - ListView now support tapping on the same item multiple times
  • WinRT - ListView supports selected color
  • WinRT - CellControl unloads cell directly rather using DataContext as Cell
  • iOS - Fix UserLocation showing as Pin
  • Packaging - Fix a minor packaging issue
  • Core - ListView no longer leaks cells for items that have been removed from the ItemsSource

There are additional internal fixes and correctness changes. If your bug is not listed here please re-verify against this release. Unfortunately due to the number of issues resolved we are certain we missed some compiling the notes, we apologize.

Xamarin Workbook

If it's not already installed, install the Xamarin Workbooks app first. The workbook file should download automatically, but if it doesn't, just click to start the workbook download manually.