简单几行代码实现UIButton 上图下文

#define ScreenHeight  [UIScreen mainScreen].bounds.size.height
#define ScreenWidth  [UIScreen mainScreen].bounds.size.width

#define HeightIn667(Height) (Height * ScreenHeight / 667)
#define WidthIn375(Width) (Width * ScreenWidth / 375)

@interface CustomBtn : UIButton

-(void)setTitle:(NSString *)title
          image:(UIImage *)image;

@end

- (CGRect)titleRectForContentRect:(CGRect)contentRect
{
    CGRect titleRect = CGRectMake(0, CGRectGetHeight(self.bounds)/3 * 2, CGRectGetWidth(self.bounds),CGRectGetHeight(self.bounds)/3);
    return titleRect;
}

- (CGRect)imageRectForContentRect:(CGRect)contentRect
{
    CGFloat width = CGRectGetWidth(self.bounds);
    CGRect imageRect = CGRectMake(0, 0, width, CGRectGetHeight(self.bounds)/3 * 2);
    
    return imageRect;
}

-(void)setTitle:(NSString *)title
          image:(UIImage *)image;
{
    [self setTitle:title forState:UIControlStateNormal];
    [self setImage:image forState:UIControlStateNormal];
}

CustomBtn *btn = [[CustomBtn alloc]initWithFrame:CGRectMake(20, 100, 80, 120)];
    [self.view addSubview:btn];
    [btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    [btn setTitle:@"测试一下" image:[UIImage imageNamed:@"placeholderHeadIcon"]];