iOS SDK: Moving the button into the center of screen by code

Question

I want to move a button to the center of the screen by code. I saw somewhere it is just few lines of code, but could not find them.

Answer 1

Both rooster117 and DavidNg answers seem correct. Just to add one more "option" to you, if you want to do this animated, you should do:

NSTimeInterval seconds = 1.0;
[UIView animateWithDuration:seconds animations:^{
    //here you should write any reframing/repositioning code
}];