Android DatePickerDialog TimePickerDialog

 1 <LinearLayout xmlns:andro
 2     android:layout_width="match_parent"
 3     android:layout_height="match_parent"
 4     android:orientation="vertical" >
 5 
 6     <Button
 7         android:layout_width="match_parent"
 8         android:layout_height="wrap_content"
 9         android:onClick="datePickerDialog"
10         android:text="DatePickerDialog" />
11     
12     <Button
13         android:layout_width="match_parent"
14         android:layout_height="wrap_content"
15         android:onClick="timePickerDialog"
16         android:text="TimePickerDialog" />
17 
18 </LinearLayout>

activity_main.xml