#pragma mark init方法内部默认会调用initWithFrame:
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// 里面的图片居中
self.imageView.contentMode = UIViewContentModeCenter;
// 里面的文字居中
self.titleLabel.textAlignment = NSTextAlignmentCenter;
// 文字字体
self.titleLabel.font = [UIFont systemFontOfSize:12];
}
return self;
}
#pragma mark 当按钮达到高亮状态的时候会调用，并且默认会在这个方法中进行高亮处理
- (void)setHighlighted:(BOOL)highlighted { }
#pragma mark 设置内部imageView的frame
- (CGRect)imageRectForContentRect:(CGRect)contentRect
{
CGFloat imgW = contentRect.size.width;
CGFloat imgH = contentRect.size.height * kImageScale;
return CGRectMake(0, 0, imgW, imgH);
}
#pragma mark 设置内部titleLabel的frame
- (CGRect)titleRectForContentRect:(CGRect)contentRect
{
CGFloat titleW = contentRect.size.width;
CGFloat titleY = contentRect.size.height * kImageScale;
CGFloat titleH = contentRect.size.height - titleY;
return CGRectMake(0, titleY, titleW, titleH);
}