Bug 25307 - Position.X property always returns 0, set is ignored (Android)
Summary: Position.X property always returns 0, set is ignored (Android)
Alias: None
Product: Forms
Classification: Xamarin
Component: Forms ()
Version: 1.3.0
Hardware: PC Windows
: Normal normal
Target Milestone: ---
Assignee: Bugzilla
Depends on:
Reported: 2014-12-11 18:21 UTC by Ian
Modified: 2015-01-15 22:52 UTC (History)
4 users (show)

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

sample project (4.28 MB, application/binary)
2014-12-11 18:21 UTC, Ian

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Description Ian 2014-12-11 18:21:59 UTC
Created attachment 9040 [details]
sample project

I'm using the Position X property to get and set the position of a horizontal scrollbar, like is done in the Forms.Labs.ExtendedScrollbar except in horizontal mode. It does work ok in vertical mode. I am attaching a simple one-page project that demonstrates this, there is a flag vert, which can switch the scroller mode to demonstrate. Behavior confirmed by Jon Douglas in support 11 Dec. (Thanks Jon)
Comment 1 Sunil Kumar 2014-12-31 12:28:15 UTC
I have tried to reproduce this issue and getting the same behavior. The Position X property to get and set the position of a horizontal scroll bar is not working. However this is working fine in vertical mode.

Screencast: http://screencast.com/t/jQLF7yxq
IDE log: https://gist.github.com/sunil360/b5a2ec10d90dcd6a380e
Debug Output: https://gist.github.com/sunil360/52642ee53b30f05224cd
Device log: https://gist.github.com/sunil360/bf61844abf6ae6380110

Environment info:
Microsoft Visual Studio Professional 2013
Version 12.0.31101.00 Update 4
Microsoft .NET Framework
Version 4.5.50938

Xamarin (a6d269d)
Xamarin.Android (49a04b966feb40dfdba49d57ba16249b66d606a6)
Xamarin.iOS (43e3b715220b50914b45bec675e19008ff50682a)
Comment 2 Jason Smith [MSFT] 2015-01-12 16:09:33 UTC
The child of the ScrollViewRenderer provides the horizontal scrolling and not the ScrollViewRenderer itself. This should help you achieve what you want.
Comment 3 Ian 2015-01-15 22:52:38 UTC
I believe the problem is in the Position.X property of the ScrollView, and also in the ScrollTo function when setting a horizontal scrolling position. I am  not sure what you mean by the child of the ScrollViewRender providing the scrolling