Bug 3796 - TextureViewDemo crash on Acer Iconiatab (ICS tab)
Summary: TextureViewDemo crash on Acer Iconiatab (ICS tab)
Alias: None
Product: Android
Classification: Xamarin
Component: Samples ()
Version: 4.0
Hardware: PC Mac OS
: --- normal
Target Milestone: ---
Assignee: Ben O'Halloran
Depends on:
Reported: 2012-03-07 17:10 UTC by PJ
Modified: 2014-06-27 14:00 UTC (History)
2 users (show)

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

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Description PJ 2012-03-07 17:10:18 UTC
This happens immediately on app launch.

Object reference not set to an instance of an object
at TextureViewDemo.TextureViewActivity.OnSurfaceTextureAvailable (Android.Graphics.SurfaceTexture,int,int) [0x0000b] in /Users/pjbeaman/GitHubRepositories/monodroid-samples/TextureViewDemo/TextureViewActivity.cs:58
at Android.Views.TextureView/ISurfaceTextureListenerInvoker.n_OnSurfaceTextureAvailable_Landroid_graphics_SurfaceTexture_II (intptr,intptr,intptr,int,int) [0x00010] in /Users/jon/Development/xamarin/monodroid-hotfix/Mono.Android/platforms/android-14/src/generated/Android.Views.TextureView.cs:82
at (wrapper dynamic-method) object.5456a2dc-71d4-4d27-91e2-e13af4c5844f (intptr,intptr,intptr,int,int) <IL 0x0001e, 0x0004b>

On emulator for me, all I get is a blank screen titled TextureViewDemo
Comment 1 PJ 2012-03-07 17:15:57 UTC
The device used was the ACER IconiaTab with ICS.
MFA 4.0.5
Mono 2.10.9

Also the sample is only supposed to work on device, so my last line above can be ignored for the bug's purposes. I

As an enhancement and if its trivial, however, we could add a label that  says 'please run on a device with hardware acceleration' etc.
Comment 2 narayanp 2014-02-21 02:54:44 UTC
I have cheked it with following builds:

All Mac
X.S 4.2.3(build 59)
Git -828c2a91b515daaac7e57bc69fcfda6178d4ec01
X.Android 4.12.0-28

I am running it on device Galaxy Tab 10.1 Version is 4.0.3. Application getting crashed on this device. However this is working fine on another devices like:

HTC one version 4.0.3
Samsung S4 version 4.3
Comment 3 Ben O'Halloran 2014-06-27 14:00:39 UTC
See Bug 17921.
Resolved in commit: https://github.com/xamarin/monodroid-samples/commit/fb1c3d79fc4295852535e576dc8e7c3d279beebf
The issue has to do with a subtly in Camera.open(), in which null is returned for devices without a rear facing camera. The updated version solves this and was tested on an Acer ICS tablet