// CRASH: hu.vsza.adsdroid (pid 6126)
// Short Msg: java.lang.NullPointerException
// Long Msg: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.ProgressDialog.dismiss()' on a null object reference
// Build Label: google/sdk_gphone_x86_arm/generic_x86_arm:9/PSR1.180720.122/6736742:userdebug/dev-keys
// Build Changelist: 6736742
// Build Time: 1596587219000
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.ProgressDialog.dismiss()' on a null object reference
at hu.vsza.adsdroid.c.a(Unknown Source:8)
at hu.vsza.adsdroid.c.onPostExecute(Unknown Source: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:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Reason
SearchPanel class will post some AsyncTasks. If the first task invoke its onPostExecute() method, the field mProgressDialog will be set to null. At the same time, the second task uses this field, and NPE is triggered.
App will crash due to some concurrency bugs.
Trace
Reason
SearchPanel
class will post someAsyncTask
s. If the first task invoke itsonPostExecute()
method, the fieldmProgressDialog
will be set to null. At the same time, the second task uses this field, and NPE is triggered.