ios方向

UIDevice：

typedef enum {
UIDeviceOrientationUnknown,
UIDeviceOrientationPortrait, // Device oriented vertically, home button on the bottom

【设备垂直，home在底部】

UIDeviceOrientationPortraitUpsideDown, // Device oriented vertically, home button on the top

【设备反转，home在上部】

UIDeviceOrientationLandscapeLeft, // Device oriented horizontally, home button on the right

【设备水平向左，home在右】

UIDeviceOrientationLandscapeRight, // Device oriented horizontally, home button on the left

【设备竖屏向右，home在左】

UIDeviceOrientationFaceUp, // Device oriented flat, face up
UIDeviceOrientationFaceDown // Device oriented flat, face down
} UIDeviceOrientation;

水平：

UIDevice：左，home键右，【也就是说home=UIinterface】-----

竖直：

UIDevice和UIIterface一样

UIInterface:

typedef enum {
UIInterfaceOrientationPortrait = UIDeviceOrientationPortrait,

【用户界面垂直，home在底部】

UIInterfaceOrientationPortraitUpsideDown = UIDeviceOrientationPortraitUpsideDown,

【用户界面反转，home在上部】

UIInterfaceOrientationLandscapeLeft = UIDeviceOrientationLandscapeRight,

【用户界面水平向左，home在左边】

UIInterfaceOrientationLandscapeRight = UIDeviceOrientationLandscapeLeft

【用户界面水平向右，home在右边】
} UIInterfaceOrientation;