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- Run the attached sample project
- ViewDidAppear calls SetNeedsFocusUpdate for button D
- Focus goes to button A
- Focus to be on button D
=== Xamarin Studio ===
Version 5.10 (build 988)
Installation UUID: 5df374dd-127a-4b3e-bfa6-0a872d52b886
Mono 4.0.4 ((detached/d481017)
GTK+ 2.24.23 (Raleigh theme)
Package version: 400040004
=== Xamarin.Profiler ===
=== Apple Developer Tools ===
Xcode 7.1 (9079)
=== Xamarin.Mac ===
Version: 126.96.36.199 (Starter Edition)
=== Xamarin.iOS ===
Version: 188.8.131.52 (Business Edition)
Build date: 2015-10-27 01:36:02-0400
=== Xamarin.Android ===
Version: 184.108.40.206 (Business Edition)
Android SDK: /Users/vincentr/Library/Developer/Xamarin/android-sdk-macosx
Supported Android versions:
2.3 (API level 10)
4.0.3 (API level 15)
4.4 (API level 19)
5.0 (API level 21)
SDK Tools Version: 24.1.2
SDK Platform Tools Version: 22.0.0
SDK Build Tools Version: 22.0.1
Java SDK: /usr
java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)
=== Xamarin Android Player ===
=== Build Information ===
Release ID: 510000988
Git revision: e2bb36197f892ea0fd385585a02cf68cf4f03b5f
Build date: 2015-10-26 12:23:51-04
Xamarin addins: b333d5f54ab244893787ad30eee07e43112fe175
Build lane: monodevelop-lion-xcode7.1
=== Operating System ===
Mac OS X 10.10.5
Darwin Vincents-iMac.local 14.5.0 Darwin Kernel Version 14.5.0
Wed Jul 29 02:26:53 PDT 2015
There's no attachment to the bug report.
Attachment is too large. Posted on dropbox;
Created attachment 13699 [details]
Cleaned bin and obj from Vincent's sample project, uploaded directly
That's fairly new to me but my understanding of  is that the update is controlled by `PreferredFocusedView`.
It's also very uncommon, in iOS API, to call a method on a instance that affect it's parent state, e.g.
> btnD.SetNeedsFocusUpdate ();
does not change the `btnD` parent focus (but it's own).
In you sample you should add:
public override UIView PreferredFocusedView
so you return which UIView you want to focus (null is fine). The when your viewcontroller ViewDidAppear is called set the `focus` to `btnD` and tell the `UIViewController` that an update to the focus is needed.
public override void ViewDidAppear (bool animated)
focus = btnD;
This resolved my issue.