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Black screen at startup on phone or tablet

March 26, 2018 - 12:19pm #1

I am using Unity version 2017.3.1f3 and Vuforia SDK Version 7.0.50

I have built my app into an Android platform. Once converted into an APK, it weighs about 200 Mb.

It works well on some phones or tablets, but on many others it will start normally and stay black at the moment it is supposed to start the camera.

Does anyone have any idea of what is happening.?

I am writing on this forum after having tried to fix this for many days now, but with no success so far.

Thanks a million for any useful suggestion!

Black screen at startup on phone or tablet

April 24, 2018 - 1:20am #5

Thanks a lot your queries really got me to the result and had a great output as it proved really helpful.

Black screen at startup on phone or tablet

April 9, 2018 - 1:24pm #4

I have found the solution. just downgrade to Unity 2017.3.0f3 and everything will be fine

Black screen at startup on phone or tablet

April 2, 2018 - 12:05pm #3

@patrickattie Do you see any errors in the logcat when you see this behaviour?

@pitch30391 Exporting a Unity project into Android Studio is not a supported workflow of the Vuforia SDK and may encounter issues.

Thanks,

Vuforia Support

Black screen at startup on phone or tablet

March 31, 2018 - 1:57pm #2

I'm having this problem too after updated unity to 2017.3.1f1

when i'm exported my unity project to android studio project, It work fine

but when I'm convert that project again into android library project, the camera will go blackscreen with UI component still working & display fine



my logcat reported that

Exception in callback: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.OverflowException: Number overflow.



I'll wait for answer with you. you're not alone with this one.

thank you

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