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:108) at android.widget.Toast.makeText(Toast.java:261) at d4.c1$q.f1(SourceFile) at d4.c1$q.onPostExecute(SourceFile) at android.os.AsyncTask.finish(AsyncTask.java:667) at android.os.AsyncTask.-wrap1(AsyncTask.java) at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:684) at android.os.Handler.dispatchMessage(Handler.java:110) at android.os.Looper.loop(Looper.java:232) at android.app.ActivityThread.main(ActivityThread.java:6806) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1103) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964)