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:126) at android.widget.Toast.makeText(Toast.java:291) at android.widget.Toast.makeText(Toast.java:281) at com.entitcs.office_attendance.e.f1$q.f1(Unknown Source:231) at com.entitcs.office_attendance.e.f1$q.onPostExecute(Unknown Source:2) at android.os.AsyncTask.finish(AsyncTask.java:762) at android.os.AsyncTask.access$900(AsyncTask.java:192) at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:779) at android.os.Handler.dispatchMessage(Handler.java:107) at android.os.Looper.loop(Looper.java:238) at android.app.ActivityThread.main(ActivityThread.java:7853) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:984)