Android - Same Id for multiple widget -

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i have multiple activity. of activity have same buttons such "continue" or "cancel" etc. each of have different actions. question is, can use same id button's in different activity? is, can use "android:id="@+id="continue_button" continue button's in different activity. or should use "continue_button_1" "continue_button_2" ...........

'views may have integer id associated them. these ids typically assigned in layout xml files, , used find specific views within view tree...view ids need not unique throughout viewtree, practice ensure @ least unique within part of tree searching. ' (http://developer.android.com/reference/android/view/view.html)


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