Write One,Run Everywhere 之 RuntimeSize( )

没错这是宏定义

/** ** ** ** ** ** ** ** UI 适配 ** ** ** ** ** ** ** **/
#define K_ScreenW [UIScreen mainScreen].bounds.size.width
#define K_ScreenH [UIScreen mainScreen].bounds.size.height

#define K_IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)

#define K_DefultSize (K_IS_IPHONE ? 375.00 : 768.00)
// 判断设配状态（竖屏 / 横屏）
#define K_DeviceISVertical ((K_ScreenH > K_ScreenW) ? 1 : 0)

#define K_DeviceDefultSize (K_DeviceISVertical ? K_ScreenH : K_ScreenW)

#define K_Scale (K_DeviceISVertical ? (K_ScreenW/K_DefultSize) : (K_ScreenH/K_DefultSize))

#define RuntimeSize(R) ((R)*K_Scale)
/** ** ** ** ** ** ** ** UI 适配 ** ** ** ** ** ** ** **/

使用方法

UIView *view = [UIView new];
view.backgroundColor = [UIColor blackColor];
view.frame = CGRectMake(((K_ScreenW - RuntimeSize(50))/2),
                        ((K_ScreenH - RuntimeSize(100))/2),
                        RuntimeSize(50),
                        RuntimeSize(100));
[self.view addSubview:view];

注意：如果 APP 需要支持横屏和竖屏的话，当设备旋转时需要更新约束！

不定期更新...