Switching between activities in android?

Question

In my android application, I have following requirement.

Activity A --> Activity B(Go to A Option) --> Activity C(Go To A Option,Go To B Option)

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Answer 1

I assume that you don't want to use Intent because whenever you use Intent for moving to activity A pressing Back key will move to the previous activity (activity C). In this case I would suggest you to include FLAG_ACTIVITY_CLEAR_TOP flag. It will destroy all the previous activity and let you to move to Activity A.

 Intent a = new Intent(this,A.class);
 a.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
 startActivity(a);

Alternatively, you can try the FLAG_ACTIVITY_REORDER_TO_FRONT flag instead, which will move to activity A without clearing any activity.

For more, check this.