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:150) at android.widget.Toast.makeText(Toast.java:419) at android.widget.Toast.makeText(Toast.java:407) at android.widget.Toast.makeText(Toast.java:381) at com.entitcs.office_attendance.e.d1$q.f1(Unknown Source:231) at com.entitcs.office_attendance.e.d1$q.onPostExecute(Unknown Source:2) at android.os.AsyncTask.finish(AsyncTask.java:755) at android.os.AsyncTask.access$900(AsyncTask.java:192) at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:772) at android.os.Handler.dispatchMessage(Handler.java:107) at android.os.Looper.loop(Looper.java:230) at android.app.ActivityThread.main(ActivityThread.java:7873) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:526) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1034)