java.lang.NullPointerException: Attempt to invoke virtual method 'android.os.IBinder android.view.View.getWindowToken()' on a null object reference at com.entitcs.office_attendance.h.b.a(Unknown Source:18) at com.entitcs.office_attendance.CRM.CRM_Add_Customer.m0(Unknown Source:0) at com.entitcs.office_attendance.CRM.CRM_Add_Customer.n0(Unknown Source:0) at com.entitcs.office_attendance.CRM.k.a(Unknown Source:2) at jrizani.jrspinner.b$a.a(Unknown Source:44) at jrizani.jrspinner.a$b$a.onClick(Unknown Source:18) at android.view.View.performClick(View.java:7498) at android.view.View.performClickInternal(View.java:7471) at android.view.View.access$3700(View.java:843) at android.view.View$PerformClick.run(View.java:29071) at android.os.Handler.handleCallback(Handler.java:938) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loopOnce(Looper.java:233) at android.os.Looper.loop(Looper.java:344) at android.app.ActivityThread.main(ActivityThread.java:8204) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:589) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1071)