Bug 13006 - [Simulator only] iOS sample 'SimpleTextInput' crashes on clicking in text field to write any text.
Summary: [Simulator only] iOS sample 'SimpleTextInput' crashes on clicking in text fie...
Alias: None
Product: iOS
Classification: Xamarin
Component: Samples ()
Version: 6.3.x
Hardware: Macintosh Mac OS
: --- normal
Target Milestone: 6.4 (async)
Assignee: GouriKumari
Depends on:
Reported: 2013-07-02 08:45 UTC by Saurabh
Modified: 2014-05-05 14:10 UTC (History)
5 users (show)

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

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Comment 1 Rolf Bjarne Kvinge [MSFT] 2013-07-02 19:06:29 UTC

monotouch master-3.0: a49e3f6363b5a23a9c4fe20579cdd07e5ff4a7bf
Comment 2 narayanp 2013-07-04 01:56:53 UTC
Today we have checked this issue with following builds:

X.S 4.0.9(build 12)
Mono 3.0.12
Xamarin.iOS 6.3.7-164

Monotouch sample master 3.0 

Now Application does not get crash after clicking on view on simulator.

Changing the status to Verified
Comment 3 Larry O'Brien 2014-04-30 15:36:03 UTC
Issue still exists in monotouch-samples:


Open SimpleTextInput sample project
Set run target to simulator (also verified on 3rd gen iPad hardware)
Build and run in Debug mode
Tap in text field

Line 93 of SimpleTextInputView (call to `BecomeFirstResponder()`) throws:

Unable to cast object of type 'MonoTouch.UIKit.UIView' (Objective-C type: 'UIKeyboardImpl') to type 'MonoTouch.UIKit.UITextInputDelegate'.
Additional information:
	Selector: setInputDelegate:
	Method: SimpleTextInput.EditableCoreTextView:set_InputDelegate (MonoTouch.UIKit.UITextInputDelegate)

Application *continues running* but keyboard does not appear and input is not allowed.

Expected result: App shouldn't throw exception. Keyboard should appear and the user should be able to enter text into the text field. 

Screencast: http://screencast.com/t/oTk0v93Nd
Comment 4 Rolf Bjarne Kvinge [MSFT] 2014-05-05 10:04:49 UTC
@Larry, which version of monotouch-samples did you try? This should be fixed in monotouch-samples/11e28ef88153d59364959cfc90acefab1f2c6f2d.
Comment 5 Larry O'Brien 2014-05-05 14:10:22 UTC
I thought I'd checked before reopening the bug, but now I can't repro, so I must have been working from old sources.