Android - Clearing Navigation Backstack

Question

I have 4 pages.

From page_1 > page_2 > page_3 > page_4.

Once the user reaches page_3 and clicks a button, it navigates to page_4. Once the button is clicked

Answer 1

for all the other activities like page_3,page_2,page_1,

Use FLAG_ACTIVITY_NO_HISTORY(If set, the new activity is not kept in the history stack.) :

intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);