3.0.0-beta.5 Crash with JNI DETECTED ERROR IN APPLICATION: java_class == null

[proguru58]

I am getting the following error in this library. It works fine on debug mode. It fails running with release APK

05-18 11:44:13.994 2746-2780/? A/art: art/runtime/java_vm_ext.cc:410] JNI DETECTED ERROR IN APPLICATION: java_class == null
art/runtime/java_vm_ext.cc:410] in call to GetMethodID
art/runtime/java_vm_ext.cc:410] from com.shockwave.pdfium.a.a com.shockwave.pdfium.PdfiumCore.nativeGetPageSizeByIndex(long, int, int)
art/runtime/java_vm_ext.cc:410] "AsyncTask #5" prio=5 tid=19 Runnable
art/runtime/java_vm_ext.cc:410] | group="main" sCount=0 dsCount=0 obj=0x12e412e0 self=0xade9ee00
art/runtime/java_vm_ext.cc:410] | sysTid=2780 nice=10 cgrp=apps/bg_non_interactive sched=0/0 handle=0x9ca72930
art/runtime/java_vm_ext.cc:410] | state=R schedstat=( 225362362 112423375 384 ) utm=15 stm=7 core=3 HZ=100
art/runtime/java_vm_ext.cc:410] | stack=0x9c970000-0x9c972000 stackSize=1038KB
art/runtime/java_vm_ext.cc:410] | held mutexes= "mutator lock"(shared held)
art/runtime/java_vm_ext.cc:410] native: #00 pc 0037169f /system/lib/libart.so (_ZN3art15DumpNativeStackERNSt3__113basic_ostreamIcNS0_11char_traitsIcEEEEiP12BacktraceMapPKcPNS_9ArtMethodEPv+142)
art/runtime/java_vm_ext.cc:410] native: #1 pc 00350cd5 /system/lib/libart.so (_ZNK3art6Thread4DumpERNSt3__113basic_ostreamIcNS1_11char_traitsIcEEEEP12BacktraceMap+160)
art/runtime/java_vm_ext.cc:410] native: #2 pc 0025afab /system/lib/libart.so (ZN3art9JavaVMExt8JniAbortEPKcS2+742)
art/runtime/java_vm_ext.cc:410] native: #3 pc 0025b703 /system/lib/libart.so (_ZN3art9JavaVMExt9JniAbortFEPKcS2_z+74)
art/runtime/java_vm_ext.cc:410] native: #4 pc 00284731 /system/lib/libart.so (ZN3art3JNI11GetMethodIDEP7_JNIEnvP7_jclassPKcS6+672)
art/runtime/java_vm_ext.cc:410] native: #5 pc 000076a7 /data/app/com.vesselvanguard.app-1/lib/arm/libjniPdfium.so (ZN7_JNIEnv11GetMethodIDEP7_jclassPKcS3+8)
art/runtime/java_vm_ext.cc:410] native: #6 pc 00007db1 /data/app/com.vesselvanguard.app-1/lib/arm/libjniPdfium.so (Java_com_shockwave_pdfium_PdfiumCore_nativeGetPageSizeByIndex+144)
art/runtime/java_vm_ext.cc:410] native: #7 pc 0333ed2b /data/app/com.vesselvanguard.app-1/oat/arm/base.odex (Java_com_shockwave_pdfium_PdfiumCore_nativeGetPageSizeByIndex__JII+110)
art/runtime/java_vm_ext.cc:410] at com.shockwave.pdfium.PdfiumCore.nativeGetPageSizeByIndex(Native method)
art/runtime/java_vm_ext.cc:410] at com.shockwave.pdfium.PdfiumCore.b(PdfiumCore.java:249)
art/runtime/java_vm_ext.cc:410] - locked <0x04ff4927> (a java.lang.Object)
art/runtime/java_vm_ext.cc:410] at com.github.barteksc.pdfviewer.f.b(PdfFile.java:86)
art/runtime/java_vm_ext.cc:410] at com.github.barteksc.pdfviewer.f.(PdfFile.java:75)
art/runtime/java_vm_ext.cc:410] at com.github.barteksc.pdfviewer.c.a(DecodingAsyncTask.java:51)
art/runtime/java_vm_ext.cc:410] at com.github.barteksc.pdfviewer.c.doInBackground(DecodingAsyncTask.java:25)
art/runtime/java_vm_ext.cc:410] at android.os.AsyncTask$2.call(AsyncTask.java:295)
art/runtime/java_vm_ext.cc:410] at java.util.concurrent.FutureTask.run(FutureTask.java:237)
art/runtime/java_vm_ext.cc:410] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
art/runtime/java_vm_ext.cc:410] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
art/runtime/java_vm_ext.cc:410] at java.lang.Thread.run(Thread.java:818)
art/runtime/java_vm_ext.cc:410]
art/runtime/runtime.cc:368] Runtime aborting...
art/runtime/runtime.cc:368]

[ZhangPeibin]

me too 。。

[ZhangPeibin]

@proguru58 你怎么解决的啊

[proguru58]

@ZhangPeibin I have solved this problem with downgrading android-pdf-viewer in gradle.

compile 'com.github.barteksc:android-pdf-viewer:2.8.2'

[ZhangPeibin]

@proguru58 Thank you very much !!!!

[polesapart]

3.2.0-beta1 seems to be affected as well.

[polesapart]

The work-around seems to add this to proguard-rules.pro:
-keep class com.shockwave.**

[amuchand47]

The work-around seems to add this to proguard-rules.pro:
-keep class com.shockwave.**

Still not able to resolve error, getting same error after that. Please help me.