Fatal Exception: java.lang.IllegalStateException on ImagePreview

[73k05]

Hi @wangsun6 thank you for the great work and wonderful lib you have been creating here,

I got a crash from my community, I don't know how to reproduce it yet but here is the error I get.

Platform: android 7 & android 10 Device: Galaxy Note10 & ZenFone AR BG: Not in background task

Crash:

Fatal Exception: java.lang.IllegalStateException: preview_fragment_parent_fl must not be null
       at com.greentoad.turtlebody.imagepreview.ImagePreview$PreviewFragment.show(ImagePreview.java:320)
       at com.greentoad.turtlebody.imagepreview.ImagePreview$PreviewFragment.access$show(ImagePreview.java:211)
       at com.greentoad.turtlebody.imagepreview.ImagePreview$PreviewFragment$initAdapter$2.onViewPagerClick(ImagePreview.java:379)
       at com.greentoad.turtlebody.imagepreview.ui.components.ViewPagerAdapter$getItem$1.onImageClick(ViewPagerAdapter.java:28)
       at com.greentoad.turtlebody.imagepreview.ui.components.ImageFragmentViewer$onViewCreated$1.onClick(ImageFragmentViewer.java:50)
       at android.view.View.performClick(View.java:7865)
       at com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView$2.onSingleTapConfirmed(SubsamplingScaleImageView.java:565)
       at android.view.GestureDetector$GestureHandler.handleMessage(GestureDetector.java:345)
       at android.os.Handler.dispatchMessage(Handler.java:107)
       at android.os.Looper.loop(Looper.java:237)
       at android.app.ActivityThread.main(ActivityThread.java:8034)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1076)

Here is the peace of code that is producing the error:

        private fun show() {
            mUiVisibilityFlag?.let {
                preview_fragment_parent_fl.systemUiVisibility = it

                if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP){
                    preview_fragment_app_bar.setPadding(0,getStatusBarHeight(),0,0)
                    preview_fragment_bottom_ll.setPadding(0,0,0,getNavigationBarSize(context!!).y)
                }

                preview_fragment_activity_toolbar.visibility = View.VISIBLE

                if(mPreviewConfig.mUriList.size>1) {
                    preview_fragment_bottom_ll.visibility = View.VISIBLE
                }
            }
        }

It seems to be the line preview_fragment_parent_fl.systemUiVisibility = it. Shall we wrap it in null test and exit in that case?

[wangsun6]

thanks for report i will look into it..

[73k05]

Hi @wangsun6 do you have any news from this crash, do you need help? I'm still getting the issue again, this time on Android 10 Pixel 4.