java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference at android.widget.Toast.(Toast.java:188) at android.widget.Toast.makeText(Toast.java:564) at android.widget.Toast.makeText(Toast.java:551) at android.widget.Toast.makeText(Toast.java:525) at d4.a1$q.f1(Unknown Source:291) at d4.a1$q.onPostExecute(Unknown Source:2) at android.os.AsyncTask.finish(AsyncTask.java:771) at android.os.AsyncTask.-$$Nest$mfinish(Unknown Source:0) at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:788) at android.os.Handler.dispatchMessage(Handler.java:106) at android.os.Looper.loopOnce(Looper.java:223) at android.os.Looper.loop(Looper.java:324) at android.app.ActivityThread.main(ActivityThread.java:8382) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:582) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1059)