Androidpdfviewer: NullPointerException

[vincecarterhu]

java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java.lang.Thread.isAlive()' on a null object reference
at com.github.barteksc.pdfviewer.PDFView.loadComplete(PDFView.java:756)
at com.github.barteksc.pdfviewer.DecodingAsyncTask.onPostExecute(DecodingAsyncTask.java:80)
at com.github.barteksc.pdfviewer.DecodingAsyncTask.onPostExecute(DecodingAsyncTask.java:27)
at android.os.AsyncTask.finish(AsyncTask.java:692)
at android.os.AsyncTask.-wrap1(AsyncTask.java)
at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:709)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:156)
at android.app.ActivityThread.main(ActivityThread.java:6517)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:942)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:832)

[Jeluchu]

Hello! I currently have exactly the same problem as you, I share my logcat although I think it is more or less the same as what you shared. In many occasions the PDF does not load me for this problem. I hope it can be fixed soon, although they have been a long time without maintaining this library

Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.os.HandlerThread.isAlive()' on a null object reference at com.github.barteksc.pdfviewer.PDFView.a(PDFView.java:8) at com.github.barteksc.pdfviewer.DecodingAsyncTask.a(DecodingAsyncTask.java:22) at com.github.barteksc.pdfviewer.DecodingAsyncTask.onPostExecute(DecodingAsyncTask.java:2) at android.os.AsyncTask.finish(AsyncTask.java:695) at android.os.AsyncTask.access$600(AsyncTask.java:180) at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:712) at android.os.Handler.dispatchMessage(Handler.java:106) at android.os.Looper.loop(Looper.java:201) at android.app.ActivityThread.main(ActivityThread.java:6810) at java.lang.reflect.Method.invoke(Method.java) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:873)

[1stmetro]

Anyone want to post some code so we can see why you are getting the error,

Although the library has not been updated for a while, i can confirm i have no issues with the code albeit i use my custom version but i have no issues.

[Jeluchu]

I am using the lower version than this because it works much better than the new one, since it seems that it is not supporting it

Also when I was testing the new version (implementation 'com.github.barteksc:android-pdf-viewer:3.2.0-beta.1'), the PDF load slowed down

If I see that it continues to fail and there is no maintenance, I will look for another library of this style

[Mohammad-Adam]

me too
java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.os.HandlerThread.isAlive()' on a null object reference at com.github.barteksc.pdfviewer.PDFView.loadComplete(PDFView.java:756) at com.github.barteksc.pdfviewer.DecodingAsyncTask.onPostExecute(DecodingAsyncTask.java:80) at com.github.barteksc.pdfviewer.DecodingAsyncTask.onPostExecute(DecodingAsyncTask.java:27) at android.os.AsyncTask.finish(AsyncTask.java:695) at android.os.AsyncTask.-wrap1(Unknown Source:0) at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:712) at android.os.Handler.dispatchMessage(Handler.java:105) at android.os.Looper.loop(Looper.java:164) at android.app.ActivityThread.main(ActivityThread.java:6541) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)

[1stmetro]

You all have an error on a null reference obviously you are doing something wrong in your code by trying to reference to a null which then returns a null error, look at your code and see what is returning the null then replace the null with the correct reference.

[mayurr1512]

if (renderingHandlerThread!= null) {
if (!renderingHandlerThread.isAlive()) {
renderingHandlerThread.start();
}
renderingHandler = new RenderingHandler(renderingHandlerThread.getLooper(), this);
renderingHandler.start();
}

Make this changes in PDFView.java file. Line no 756