When pdf is Loaded again from background

[ethemsulan]

java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.os.HandlerThread.isAlive()' on a null object reference

if (!renderingHandlerThread.isAlive()) { renderingHandlerThread.start(); }

[grizzly]

same here

[rvanderlinden]

I also encountered this issue. The loadComplete method should probably check for renderingHandlerThread != null before handling the callback, because the renderingHandlerThread is set to null when the view is detached from the window.

[ssindher11]

Until it is fixed, you can use a flag variable which is set to false when you leave the activity. And load the PDF only when the flag is true.

[StonedNinjaa]

@ssindher11 please share example code on how to use flag.

[rohit75]

@ssindher11 Please share example to understand it better Thanks in Advance

[NayabSarfraz]

I cant even reproduce this issue but the crash events on firebase are high. When activity starts and PDF is loaded In PDFView.java loadComplete is called but when i switch the app to background and then it comes to foreground again this method is not even called. Any help how to reproduce this issue so that i can apply a proper fix?

[passmanagerapp]

Still no solution for this ?

[MohamedAbdelrazek]

I Fixed it like this

 if (!isDestroyed) {
            binding.pdfView.fromFile(file)
                .onPageError { page, _ ->
                    showToast("Error at page: $page")
                }.onError { error ->
                    error.message?.let {
                        showToast(it)
                    }

                }
                .load()
        }

/** * isDestroyed * Returns true if the final {@link #onDestroy()} call has been made * on the Activity, so this instance is now dead. */

[AliUsman3233]

Instead of using Flag like stuff I recommend this approach. withContext(Dispatchers.Main) { // I assume that you were working with some spendable job if ([email protected]) { // Apply this condition to prevent that crash dataBinding!!.pdfView.fromStream( stream ) .load() updateSelection(it.data) } client.dispatcher.executorService.shutdown() }

[jiantao88]

I also encountered this issue 1at Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.os.HandlerThread.isAlive()' on a null object reference 2at com.github.barteksc.pdfviewer.PDFView.a(PDFView.java:756) 3at com.github.barteksc.pdfviewer.c.a(DecodingAsyncTask.java:80) 4at com.github.barteksc.pdfviewer.c.onPostExecute(DecodingAsyncTask.java:27)

[saurabh-drishti]

Have you found any solution for this ? I am facing the exact issue.

[sahilk01]

I Fixed it like this

 if (!isDestroyed) {
            binding.pdfView.fromFile(file)
                .onPageError { page, _ ->
                    showToast("Error at page: $page")
                }.onError { error ->
                    error.message?.let {
                        showToast(it)
                    }

                }
                .load()
        }

/** * isDestroyed * Returns true if the final {@link #onDestroy()} call has been made * on the Activity, so this instance is now dead. */

this worked for me... thanks.

[Shvet]

Can anyone has solution for this issue?