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Created attachment 8198 [details]
Snapshotting a view that has not been rendered results in an empty snapshot. Ensure your view has been rendered at least once before snapshotting or snapshot after screen updates.
in iOS8, the above error is created using the below steps on the attached test case:
- Run the camera
- Take a picture and USE the photo
- Run the camera again
- Black screen (if you take a picture, it will restart the preview window and all will work again until you USE photo)
This does lead to more serious issues in other apps. In a couple of our apps, after using the photo, the preview screen becomes a black screen. If you take another picture, it releases the preview screen again. I do believe this is a bug in iOS8, not xamarin at this point as I have seen it in straight objective-c as well.
I have downloaded the attached project and run it on iOS 8 device iPhone 4S and observed that its working fine. I have followed following steps :
1. Open attached project in XS
2. Deploy it on device
3. click on camera
4. Take a picture and click on Use Photo
5. Again click on Camera
Observed that black screen is not appearing and I am able to take picture again and able to tap on use photo.
Please let me know if I have missed any step to reproduce it ?
Could you please share with which build you are getting this issue ?
Xamarin Studio->About Xamarin Studio->Show details
I am using following Environment :
=== Xamarin Studio ===
Version 5.5 (build 227)
Installation UUID: 45555ffd-f3f0-4f29-9543-e369d711ab7d
Mono 3.10.0 ((detached/633e444)
GTK+ 2.24.23 (Raleigh theme)
Package version: 310000020
=== Apple Developer Tools ===
Xcode 6.0.1 (6528)
=== Xamarin.Mac ===
Version: 22.214.171.124 (Enterprise Edition)
=== Xamarin.iOS ===
Version: 126.96.36.199 (Enterprise Edition)
Build date: 2014-10-03 00:25:37-0400
=== Xamarin.Android ===
Version: 4.18.0 (Enterprise Edition)
Android SDK: /Users/xamarin77/Desktop/android-sdk-macosx
Supported Android versions:
2.1 (API level 7)
2.2 (API level 8)
2.3 (API level 10)
3.1 (API level 12)
3.2 (API level 13)
4.0 (API level 14)
4.0.3 (API level 15)
4.1 (API level 16)
4.2 (API level 17)
4.3 (API level 18)
4.4 (API level 19)
4.4.87 (API level 20)
4.5 (API level 21)
Java SDK: /usr
java version "1.7.0_65"
Java(TM) SE Runtime Environment (build 1.7.0_65-b17)
Java HotSpot(TM) 64-Bit Server VM (build 24.65-b04, mixed mode)
=== Build Information ===
Release ID: 505000227
Git revision: 7b721eeec7a2fa4c4f4de0ecd2aed4dc25edac95
Build date: 2014-10-02 15:53:38-04
Xamarin addins: 99ed56b428b31eba1efaace4d82188d6f334e6ca
=== Operating System ===
Mac OS X 10.9.5
Darwin Xamarin77s-Mac-mini.local 13.4.0 Darwin Kernel Version 13.4.0
Sun Aug 17 19:50:11 PDT 2014
It looks like this was a defect with iOS. As of 8.0.2, we cannot reproduce the behavior.
fixed in 8.0.2
This is still an issue in 8.1. Ignoring the view and taking the picture will clear the issue.