ios 简单的使用按比例自适应屏幕

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//1.首先创建一个类,继承于NSObject,在.m中导入AVKit.AVKit.h框架

+ (CGRect)getNewRectWithRect:(CGRect)rect isHeight:(BOOL)isHeight{        CGRect newRect = CGRectZero;    newRect.origin = [self getNewPointWithPoint:rect.origin];    newRect.size = [self getNewSizeWithSize:rect.size isHeight:isHeight];    return newRect;}+ (CGPoint)getNewPointWithPoint:(CGPoint)point{    CGPoint newpoint = CGPointZero;    newpoint.x = point.x * W_Adapter;    newpoint.y = point.y * H_Adapter;    return newpoint;}+ (CGSize)getNewSizeWithSize:(CGSize)size isHeight:(BOOL)isHeight{    CGSize newSize =  CGSizeZero;    newSize.width = size.width * W_Adapter;    if (isHeight) {        newSize.height = size.height * H_Adapter;    }else{        newSize.height = size.height * W_Adapter;    }    return newSize;}

//2.在.h中写4个宏定义,然后将方法声明,让外部可以调用

#define SCREEN_W [UIScreen mainScreen].bounds.size.width#define SCREEN_H [UIScreen mainScreen].bounds.size.height#define W_Adapter SCREEN_W/375.0#define H_Adapter SCREEN_H/667.0

//传入的Bool值是用于判断你是否需要用高度自适应

+ (CGRect)getNewRectWithRect:(CGRect)rect isHeight:(BOOL)isHeight;+ (CGPoint)getNewPointWithPoint:(CGPoint)point;+ (CGSize)getNewSizeWithSize:(CGSize)size isHeight:(BOOL)isHeight;

//3.然后就是使用了,在你初始化控件的地方

UILabel *label = [[UILabel alloc] initWithFrame:[TextOfThe getNewRectWithRect:CGRectMake(0, 270, 115, 30) isHeight:YES]];

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