Centering in Storyboard

Question

I am a little bit confused by Xcode 6 Storyboard.

The auto layout seems to be a very powerful tool to build UI for different devices. However, no matter what kinds of layout I chose (compact or any height/width) or even uncheck the "Use auto layout" and "Use size classes", what I mapped in the storyboard view always looks different when I am testing (using an iPhone 6).

For example if I left a UIButton at the center of the storyboard, it will be a little right down away from center when appears on my iPhone 6.

Could anyone please give me some help on this. Maybe just for iPhone6 instead of different devices. Thank you very much.

Answer 1

If you simply want to center an UI element check both Horizontal Center in Container and Vertical Center in Container in the storyboard constraints alignment popover.