iOS开发各种设备字体适配

调用

[self.title setFont:kFont(15)];

//粗体
[self.title setFont: kboldFont(15)];

定义宏

#define kWidth [UIScreen mainScreen].bounds.size.width
#define SizeScale (kWidth != 414 ? 1 : 1.2)
#define kFont(value) [UIFont systemFontOfSize:value * SizeScale]
#define kboldFont(value)  [UIFont boldSystemFontOfSize:value * SizeScale]

UIButton+font.h

#import <UIKit/UIKit.h>
#import <objc/runtime.h>

/**
 *  button
 */
@interface UIButton (MyFont)

@end


/**
 *  Label
 */
@interface UILabel (myFont)

@end

/**
 *  TextField
 */

@interface UITextField (myFont)

@end

/**
 *  TextView
 */
@interface UITextView (myFont)

@end

UIButton+font.m

#import "UIButton+MyFont.h"

//不同设备的屏幕比例(当然倍数可以自己控制)

@implementation UIButton (MyFont)

+ (void)load{
    Method imp = class_getInstanceMethod([self class], @selector(initWithCoder:));
    Method myImp = class_getInstanceMethod([self class], @selector(myInitWithCoder:));
    method_exchangeImplementations(imp, myImp);
}

- (id)myInitWithCoder:(NSCoder*)aDecode{
    [self myInitWithCoder:aDecode];
    if (self) {
        
        //部分不像改变字体的 把tag值设置成333跳过
        if(self.titleLabel.tag != 333){
            CGFloat fontSize = self.titleLabel.font.pointSize;
            self.titleLabel.font = [UIFont systemFontOfSize:fontSize * SizeScale];
        }
    }
    return self;
}

@end


@implementation UILabel (myFont)

+ (void)load{
    Method imp = class_getInstanceMethod([self class], @selector(initWithCoder:));
    Method myImp = class_getInstanceMethod([self class], @selector(myInitWithCoder:));
    method_exchangeImplementations(imp, myImp);
}

- (id)myInitWithCoder:(NSCoder*)aDecode{
    [self myInitWithCoder:aDecode];
    if (self) {
        //部分不像改变字体的 把tag值设置成333跳过
        if(self.tag != 333){
            CGFloat fontSize = self.font.pointSize;
            self.font = [UIFont systemFontOfSize:fontSize * SizeScale];
        }
    }
    return self;
}

@end

@implementation UITextField (myFont)

+ (void)load{
    Method imp = class_getInstanceMethod([self class], @selector(initWithCoder:));
    Method myImp = class_getInstanceMethod([self class], @selector(myInitWithCoder:));
    method_exchangeImplementations(imp, myImp);
}

- (id)myInitWithCoder:(NSCoder*)aDecode{
    [self myInitWithCoder:aDecode];
    if (self) {
        //部分不像改变字体的 把tag值设置成333跳过
        if(self.tag != 333){
            CGFloat fontSize = self.font.pointSize;
            self.font = [UIFont systemFontOfSize:fontSize * SizeScale];
        }
    }
    return self;
}

@end

@implementation UITextView (myFont)

+ (void)load{
    Method imp = class_getInstanceMethod([self class], @selector(initWithCoder:));
    Method myImp = class_getInstanceMethod([self class], @selector(myInitWithCoder:));
    method_exchangeImplementations(imp, myImp);
}

- (id)myInitWithCoder:(NSCoder*)aDecode{
    [self myInitWithCoder:aDecode];
    if (self) {
        //部分不像改变字体的 把tag值设置成333跳过
        if(self.tag != 333){
            CGFloat fontSize = self.font.pointSize;
            self.font = [UIFont systemFontOfSize:fontSize * SizeScale];
        }
    }
    return self;
}

@end