App crash

[farismhmd1]

On my android oreo phone app crash after the swipe of 3rd pdf.

03-11 11:55:31.989 8600-8605/me.ameriod.pdfviewer I/zygote64: Increasing code cache capacity to 256KB
03-11 11:55:32.163 8600-8600/me.ameriod.pdfviewer D/AndroidRuntime: Shutting down VM
03-11 11:55:32.174 8600-8600/me.ameriod.pdfviewer E/AndroidRuntime: FATAL EXCEPTION: main
Process: me.ameriod.pdfviewer, PID: 8600
java.lang.IllegalStateException: Already closed
at android.graphics.pdf.PdfRenderer$Page.throwIfClosed(PdfRenderer.java:467)
at android.graphics.pdf.PdfRenderer$Page.close(PdfRenderer.java:440)
at me.ameriod.lib.pdfviewer.PdfViewerView$PdfAdapter.instantiateItem(PdfViewerView.java:155)
at android.support.v4.view.ViewPager.addNewItem(ViewPager.java:1002)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1216)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1084)
at android.support.v4.view.ViewPager$3.run(ViewPager.java:267)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:966)
at android.view.Choreographer.doCallbacks(Choreographer.java:778)
at android.view.Choreographer.doFrame(Choreographer.java:710)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:952)
at android.os.Handler.handleCallback(Handler.java:789)
at android.os.Handler.dispatchMessage(Handler.java:98)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6809)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
03-11 11:55:32.184 8600-8600/me.ameriod.pdfviewer D/AppTracker: App Event: crash

[rahulkhatri19]

Use try catch block . In PdfViewerView.java file in lib. Example : @OverRide
public Object instantiateItem(ViewGroup container, int position) {
if (currentPage != null) {
try {
currentPage.close();
} catch (Exception e){
e.printStackTrace();
}
}

and at

@OverRide
public void destroyItem(ViewGroup container, int position, Object object) {
try {
if (currentPage != null) {
try{
currentPage.close();
} catch (Exception e){
e.printStackTrace();
}
}
} catch (Exception e) {
e.printStackTrace();
// no op, need to make sure it is closed
}

        container.removeView((View) object);
    }

[Programmingtimes]

this app is totally buggy it does not have any code ethic. sorry author. the sample file does not have any id finder or initiation!