iOS View自定义窍门——UIButton实现上显示图片，下显示文字

来源：互联网发布：淘宝哪家买iphone靠谱编辑：程序博客网时间：2024/06/13 02:16

第一种

自定义类继承UIButton，然后
-(void)layoutSubviews{    [super layoutSubviews];    CGFloat midX = self.frame.size.width / 2;    CGFloat midY = self.frame.size.height/ 2 ;    self.titleLabel.center = CGPointMake(midX, midY + 15);    self.imageView.center = CGPointMake(midX, midY - 10);}
第二种
- (void)verticalImageAndTitle:(CGFloat)spacing{    self.titleLabel.backgroundColor = [UIColor greenColor];    CGSize imageSize = self.imageView.frame.size;    CGSize titleSize = self.titleLabel.frame.size;    CGSize textSize = [self.titleLabel.text sizeWithFont:self.titleLabel.font];    CGSize frameSize = CGSizeMake(ceilf(textSize.width), ceilf(textSize.height));    if (titleSize.width + 0.5 < frameSize.width) {        titleSize.width = frameSize.width;    }    CGFloat totalHeight = (imageSize.height + titleSize.height + spacing);    self.imageEdgeInsets = UIEdgeInsetsMake(- (totalHeight - imageSize.height), 0.0, 0.0, - titleSize.width);    self.titleEdgeInsets = UIEdgeInsetsMake(0, - imageSize.width, - (totalHeight - titleSize.height), 0);}
效果如下。imageView和label的大小都是根据内容确定的，而且二者的整体始终在中央，上下的间距可以设置。使用的时候要保证Button的宽度一定要大于等于图片的宽

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