iOS 字体大小适配
1、用宏定义适配字体大小(根据屏幕尺寸判断)
(1)方法
//宏定义
#define SCREEN_WIDTH ([UIScreen mainScreen].bounds.size.width)
#define FONT_SIZE(size) ([UIFont systemFontOfSize:FontSize(size))
/**
* 字体适配 我在PCH文件定义了一个方法
*/
static inline CGFloat FontSize(CGFloat fontSize){
if (SCREEN_WIDTH==320) {
return fontSize-2;
}else if (SCREEN_WIDTH==375){
return fontSize;
}else{
return fontSize+2;
}
}
(2)方法
#define IsIphone6P SCREEN_WIDTH==414
#define SizeScale (IsIphone6P ? 1.5 : 1)
#define kFontSize(value) value*SizeScale
#define kFont(value) [UIFont systemFontOfSize:value*SizeScale]
2、利用runtime给UIFont写分类 替换系统自带的方法
#define MyUIScreen 375 // UI设计原型图的手机尺寸宽度
UIFont+runtime.m
#import "UIFont+runtime.h"
#import
@implementation UIFont (runtime)
+ (void)load {
// 获取替换后的类方法
Method newMethod = class_getClassMethod([self class], @selector(adjustFont:));
// 获取替换前的类方法
Method method = class_getClassMethod([self class], @selector(systemFontOfSize:));
// 然后交换类方法,交换两个方法的IMP指针,(IMP代表了方法的具体的实现)
method_exchangeImplementations(newMethod, method);
}
+ (UIFont *)adjustFont:(CGFloat)fontSize {
UIFont *newFont = nil;
newFont = [UIFont adjustFont:fontSize * [UIScreen mainScreen].bounds.size.width/MyUIScreen];
return newFont;
}
@end
// 实现
UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(0, 150, [UIScreen mainScreen].bounds.size.width, 60)];
label.text = @"iOS字体大小适配";
label.font = [UIFont systemFontOfSize:16];
[self.view addSubview:label];