Bug 44176

Summary: InputTransparent fails if BackgroundColor not explicitly set on Android
Product: Forms Reporter: adrianknight89
Component: FormsAssignee: Bugzilla <bugzilla>
Status: RESOLVED FIXED    
Severity: normal CC: david, FieldstrikeMobile, gabor.nemeth.dev, jas, jimmy.garrido, jon.goldberger, parmendrak, rui.marinho, sahou, v-sapaun
Priority: ---    
Version: 2.3.2   
Target Milestone: ---   
Hardware: PC   
OS: Windows   
Related Links: https://bugzilla.xamarin.com/show_bug.cgi?id=50992
https://bugzilla.xamarin.com/show_bug.cgi?id=50362
Tags: AC Is this bug a regression?: ---
Last known good build:
Attachments: repro

Description adrianknight89 2016-09-12 02:53:09 UTC
Created attachment 17412 [details]
repro

Setting InputTransparent="False" does not work on Android if the background color is not set or if it is set to Transparent. The color must be set to a **non-transparent** color in order for taps not to propagate down.

On iOS, all is fine.

Please see repro.

XF 2.3.2.118-pre1 / Samsung S6.
Comment 1 Gabor Nemeth 2016-09-16 09:16:48 UTC
I confirm this issue. I have experienced in one of my apps. I had to set InputTransparent to false and IsEnabled to true on a ListView to be able to disable user interaction.

In this example if the BackgroundColor is set to non-transparent, but Opacity is also set - for example - to 0.5, the ContentView let tap events across. Even if IsEnabled is set to false on it.

XF 2.3.2.127
Comment 2 adrianknight89 2016-09-16 14:31:30 UTC
Please see my PR: https://github.com/xamarin/Xamarin.Forms/pull/344
Comment 3 Samantha Houts [MSFT] 2016-09-30 23:18:03 UTC
Should be fixed in 2.3.4-pre1. Thank you!
Comment 4 Parmendra Kumar 2016-11-28 15:20:33 UTC
I have checked this issue with Xamarin.Forms 2.3.4-pre1 and I am still getting same issue with Android and on iOS its working fine.

Screencast: http://www.screencast.com/t/bpRdDpDo

Hence reopened this issue.

Please have a look screencast and let me know If I have missed anything to verify this issue.
Comment 5 adrianknight89 2016-11-28 15:25:16 UTC
A better fix should be https://github.com/xamarin/Xamarin.Forms/pull/483, but it needs to be merged.
Comment 6 Jon Goldberger [MSFT] 2017-01-28 00:41:16 UTC
There are a couple of other seemingly related bug reports that are not resolved in the 2.3.4-pre1.

See: 
bugzilla.xamarin.com/show_bug.cgi?id=50992 
and 
bugzilla.xamarin.com/show_bug.cgi?id=50362

Thought I would bring it up so you can see if the issues are related and whether they may be fixed by the pull request noted in comment 5 above.
Comment 7 Rui Marinho 2017-03-23 17:27:44 UTC
Should be fixed on 2.3.5-pre1.
Comment 8 Saurabh Paunikar 2017-07-14 11:30:19 UTC
On xamarin.form version 2.3.5.256-pre6,Used code

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="TestClient.MainPage">
<Grid>
  <Button Text="Click" Clicked="Button_OnClicked"/>
  <ContentView BackgroundColor="Transparent" InputTransparent="False"/>
</Grid>
</ContentPage>

Observed that button is still clickable on android. However it is working fine in iOS. Hence reopening the issue

ScreenCast link : https://www.screencast.com/t/mTWihlbTR
Comment 9 Jimmy [MSFT] 2017-07-14 16:50:05 UTC
I was also able to still reproduce this issue with Forms 2.3.5-pre6. However I tested with the 2.3.6.118-nightly build as well and the issue appears to be resolved there, so the fix for this issue will be in future release.