how can i get object from tag?

Question

i have one view .in that view i have 2 buttons .

i know tag of that button . i want to change image of that button.

how can i change image by this tag?

Answer 1

UIScrollView * scView=(UIScrollView*)[self.view viewWithTag:20];
UIButton *button = (UIButton *)[scView viewWithTag:3];

Answer 2

UIButton *button = (UIButton *)[myView viewWithTag:myTag];
[button setImage:... forState:...];