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karumi's dexter crash
Process: com.karumi.dexter.sample, PID: 19347
java.lang.RuntimeException: Unable to destroy activity {com.karumi.dexter.sample/com.karumi.dexter.DexterActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.karumi.dexter.DexterInstance.onActivityDestroyed()' on a null object reference
at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:3831)
at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:3849)
at android.app.ActivityThread.-wrap5(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1398)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.karumi.dexter.DexterInstance.onActivityDestroyed()' on a null object reference
at com.karumi.dexter.Dexter.onActivityDestroyed(Dexter.java:145)
at com.karumi.dexter.DexterActivity.onDestroy(DexterActivity.java:42)
at android.app.Activity.performDestroy(Activity.java:6422)
at android.app.Instrumentation.callActivityOnDestroy(Instrumentation.java:1142)
at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:3818)
at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:3849) 
at android.app.ActivityThread.-wrap5(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1398) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:148) 
at android.app.ActivityThread.main(ActivityThread.java:5417) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
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