Please Answer the Question.

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Android Studio: MyContactList Project

Make the navigation work for all activities in the app. Copy the navigation bar XML code to the layout associated with each activity. Copy the Java code that makes the buttons work to the Java file associated with each activity. You will have to modify that code to reference the activity it is in, rather than MainActivity. Add code to disable the ImageButton associated with the activity that is displayed. and Modify the DatePickerDialog layout so that the Cancel/OK buttons are centered. Hint: Youll have to use the gravity attribute in the LinearLayout