"Error while saving image" when cropping

[takacsm12]

After applying crop, toast "Error while saving image" is displayed.
Problem is probably in CropFragment , line 201: Single.fromCallable(() -> cropPanel.getCroppedImage());
method getCroppedImage is called from background thread, but it should not, because it works with view (mImageView.clearAnimation())
This problem does not happens on all devices, reproduced on Galaxy Tab S2 , Android 7

Stacktrace:
android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
at android.view.ViewRootImpl.checkThread(ViewRootImpl.java:7831)
at android.view.ViewRootImpl.invalidateChildInParent(ViewRootImpl.java:1342)
at android.view.ViewGroup.invalidateChild(ViewGroup.java:5449)
at android.view.View.invalidateInternal(View.java:14807)
at android.view.View.invalidate(View.java:14771)
at android.view.View.invalidateParentIfNeeded(View.java:14960)
at android.view.View.clearAnimation(View.java:21431)
at com.theartofdev.edmodo.cropper.CropImageView.getCroppedImage(CropImageView.java:763)
at com.theartofdev.edmodo.cropper.CropImageView.getCroppedImage(CropImageView.java:737)
at iamutkarshtiwari.github.io.ananas.editimage.fragment.crop.CropFragment.lambda$getCroppedBitmap$4$CropFragment(CropFragment.java:201)
at iamutkarshtiwari.github.io.ananas.editimage.fragment.crop.-$$Lambda$CropFragment$Y_hl9FvcrZ26G-Bb-gpLHqbxGQw.call(lambda)
at io.reactivex.internal.operators.single.SingleFromCallable.subscribeActual(SingleFromCallable.java:44)
at io.reactivex.Single.subscribe(Single.java:3575)
at io.reactivex.internal.operators.single.SingleSubscribeOn$SubscribeOnObserver.run(SingleSubscribeOn.java:89)
at io.reactivex.internal.schedulers.ScheduledDirectTask.call(ScheduledDirectTask.java:38)
at io.reactivex.internal.schedulers.ScheduledDirectTask.call(ScheduledDirectTask.java:26)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:272)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
at java.lang.Thread.run(Thread.java:762)

[iamutkarshtiwari]

@takacsm12 I'd appreciate it if you could make a PR for this issue if you were able to fix it as I don't have this device on me. 🙏

[iamutkarshtiwari]

Fixed.