java.lang.NumberFormatException: For input string: "null"
	at java.lang.Integer.parseInt(Integer.java:797)
	at java.lang.Integer.valueOf(Integer.java:1128)
	at com.entitcs.office_attendance.activities.LeaveRequest.showAlertDialog(LeaveRequest.java:1095)
	at com.entitcs.office_attendance.activities.LeaveRequest.access$300(LeaveRequest.java:94)
	at com.entitcs.office_attendance.activities.LeaveRequest$1.onItemSelected(LeaveRequest.java:255)
	at android.widget.AdapterView.fireOnSelected(AdapterView.java:957)
	at android.widget.AdapterView.dispatchOnItemSelected(AdapterView.java:946)
	at android.widget.AdapterView.-$$Nest$mdispatchOnItemSelected(Unknown Source:0)
	at android.widget.AdapterView$SelectionNotifier.run(AdapterView.java:910)
	at android.os.Handler.handleCallback(Handler.java:959)
	at android.os.Handler.dispatchMessage(Handler.java:100)
	at android.os.Looper.loopOnce(Looper.java:232)
	at android.os.Looper.loop(Looper.java:317)
	at android.app.ActivityThread.main(ActivityThread.java:8592)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:580)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:878)