问题
Possible Duplicate:
IPhone/IPad: How to get screen width programmatically?
How to get orientation-dependent height and width of the screen?
Accounting for the various iOS devices and orientations, what is the simplest approach to getting the current screen resolution, including height and width?
回答1:
UIScreen is your friend here.
CGRect screenRect = [[UIScreen mainScreen] bounds];
CGFloat screenWidth = screenRect.size.width;
CGFloat screenHeight = screenRect.size.height;
回答2:
CGRect screenBounds = [[UIScreen mainScreen] bounds];
That will give you the entire screen's resolution in points, so it would most typically be 320x480 for iPhones. Even though the iPhone4 has a much larger screen size iOS still gives back 320x480 instead of 640x960. This is mostly because of older applications breaking.
Hope it helps you..
来源：https://stackoverflow.com/questions/14135207/how-to-get-ios-device-screen-height-and-width