Calling RS with no context active

Hi,

Blurview v. 1.3.4

Been using this library for months. Just started getting this error.

Fatal Exception: android.renderscript.RSInvalidStateException: Calling RS with no Context active.
       at android.renderscript.RenderScript.validate(RenderScript.java:1237)
       at android.renderscript.Allocation.createFromBitmap(Allocation.java:2798)
       at android.renderscript.Allocation.createFromBitmap(Allocation.java:3062)
       at eightbitlab.com.blurview.RenderScriptBlur.blur(RenderScriptBlur.java:47)
       at eightbitlab.com.blurview.BlockingBlurController.blurAndSave(BlockingBlurController.java:1241)
       at eightbitlab.com.blurview.BlurView.draw(BlurView.java:57)
       at android.view.View.updateDisplayListIfDirty(View.java:16200)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3758)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3738)
       at android.view.View.updateDisplayListIfDirty(View.java:16163)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3758)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3738)
       at android.view.View.updateDisplayListIfDirty(View.java:16163)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3758)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3738)
       at android.view.View.updateDisplayListIfDirty(View.java:16163)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3758)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3738)
       at android.view.View.updateDisplayListIfDirty(View.java:16163)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3758)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3738)
       at android.view.View.updateDisplayListIfDirty(View.java:16163)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3758)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3738)
       at android.view.View.updateDisplayListIfDirty(View.java:16163)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3758)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3738)
       at android.view.View.updateDisplayListIfDirty(View.java:16163)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3758)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3738)
       at android.view.View.updateDisplayListIfDirty(View.java:16163)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3758)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3738)
       at android.view.View.updateDisplayListIfDirty(View.java:16163)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3758)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3738)
       at android.view.View.updateDisplayListIfDirty(View.java:16163)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3758)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3738)
       at android.view.View.updateDisplayListIfDirty(View.java:16163)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3758)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3738)
       at android.view.View.updateDisplayListIfDirty(View.java:16163)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3758)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3738)
       at android.view.View.updateDisplayListIfDirty(View.java:16163)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3758)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3738)
       at android.view.View.updateDisplayListIfDirty(View.java:16163)
       at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3758)
       at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3738)
       at android.view.View.updateDisplayListIfDirty(View.java:16163)
       at android.view.ThreadedRenderer.updateViewTreeDisplayList(ThreadedRenderer.java:676)
       at android.view.ThreadedRenderer.updateRootDisplayList(ThreadedRenderer.java:682)
       at android.view.ThreadedRenderer.draw(ThreadedRenderer.java:796)
       at android.view.ViewRootImpl.draw(ViewRootImpl.java:2989)
       at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2783)
       at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2374)
       at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1364)
       at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6763)
       at android.view.Choreographer$CallbackRecord.run(Choreographer.java:923)
       at android.view.Choreographer.doCallbacks(Choreographer.java:735)
       at android.view.Choreographer.doFrame(Choreographer.java:667)
       at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:909)
       at android.os.Handler.handleCallback(Handler.java:761)
       at android.os.Handler.dispatchMessage(Handler.java:98)
       at android.os.Looper.loop(Looper.java:156)
       at android.app.ActivityThread.main(ActivityThread.java:6524)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:941)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:831)

Any idea?

[Dimezis]

glide-transformations should just stop calling releaseAllContexts. It can break more than this library

[Dimezis]

So I spent quite a lot of time investigating this crash.

The conclusion is - from library’s POV it’s impossible to call RS without context, at least on API 23+. I’m obtaining it in BlurAlgorithm’s constructor to use in the same object. Eventually, destroy() is called on RS and I thought it could be an issue in certain cases if you are accidentally reusing the same BlurAlgorithm. But, on API 23+ destroy() is a no-op, because of changes in SDK.

So I have only couple of potential explanations to the problem:

1. Some vendors changed RS API and something doesn’t correspond to official documentation.
2. RS Context can be destroyed implicitly by SDK in some weird cases and I have no control over it. For example, from RS sources it seems like it can happen during GC of Renderscipt object.
3. You have some memory leaks or duplicated BlurViews or BlurAlgorithms which you are not aware of and it causes some issues, theoretically related to point 2.

Long story short, at this point I’m not able to fix it, and I have only 3 suggestions for you:

1. You can use a workaround I provided in post above, with custom BlurAlgorithm and try-catch
2. Give a try to com.eightbitlab:supportrenderscriptblur, maybe Support Renderscript doesn’t have this issue.
3. Set up Strict Mode to check if there’s only 1 instance of BlurView and RenderscriptBlur at a time.