java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Object java.util.ArrayList.get(int)' on a null object reference at com.entitcs.office_attendance.activities.LeaveRequest$k.onItemSelected(SourceFile) at android.widget.AdapterView.fireOnSelected(AdapterView.java:929) at android.widget.AdapterView.dispatchOnItemSelected(AdapterView.java:918) at android.widget.AdapterView.access$300(AdapterView.java:56) at android.widget.AdapterView$SelectionNotifier.run(AdapterView.java:888) at android.os.Handler.handleCallback(Handler.java:815) at android.os.Handler.dispatchMessage(Handler.java:104) at android.os.Looper.loop(Looper.java:207) at android.app.ActivityThread.main(ActivityThread.java:5857) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1026) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:887)