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copy from CPLASF_lixj http://blog.csdn.net/qijianli/article/details/8152726
项目中经常会遇到Button上同时显示图片和文字,且图片和文字上下排列,同事用到的方法是在UIButton上添加一个UIImageView和UILable控件,这样做代码比较繁琐,然后我就试着扩展了UIButton,代码如下:
在.h文件中:
@interface UIButton (UIButtonImageWithLable)
- (void) setImage:(UIImage *)image withTitle:(NSString *)title forState:(UIControlState)stateType;
@end
在.m文件中:
- (void) setImage:(UIImage *)image withTitle:(NSString *)title forState:(UIControlState)stateType {
//UIEdgeInsetsMake(CGFloat top, CGFloat left, CGFloat bottom, CGFloat right)
CGSize titleSize = [title sizeWithFont:HELVETICANEUEMEDIUM_FONT(12.0f)];
[self.imageView setContentMode:UIViewContentModeCenter];
[self setImageEdgeInsets:UIEdgeInsetsMake(-8.0,
0.0,
0.0,
-titleSize.width)];
[self setImage:image forState:stateType];
[self.titleLabel setContentMode:UIViewContentModeCenter];
[self.titleLabel setBackgroundColor:[UIColor clearColor]];
[self.titleLabel setFont:HELVETICANEUEMEDIUM_FONT(12.0f)];
[self.titleLabel setTextColor:COLOR_ffffff];
[self setTitleEdgeInsets:UIEdgeInsetsMake(30.0,
-image.size.width,
0.0,
0.0)];
[self setTitle:title forState:stateType];
}
备注:如果不需要上下显示,只需要横向排列的时候,就不需要设置左右偏移量了,代码如下
- (void) setImage:(UIImage *)image withTitle:(NSString *)title forState:(UIControlState)stateType {
//UIEdgeInsetsMake(CGFloat top, CGFloat left, CGFloat bottom, CGFloat right)
CGSize titleSize = [title sizeWithFont:HELVETICANEUEMEDIUM_FONT(12.0f)];
[self.imageView setContentMode:UIViewContentModeCenter];
[self setImageEdgeInsets:UIEdgeInsetsMake(-8.0,
0.0,
0.0,
0.0)];
[self setImage:image forState:stateType];
[self.titleLabel setContentMode:UIViewContentModeCenter];
[self.titleLabel setBackgroundColor:[UIColor clearColor]];
[self.titleLabel setFont:HELVETICANEUEMEDIUM_FONT(12.0f)];
[self.titleLabel setTextColor:COLOR_ffffff];
[self setTitleEdgeInsets:UIEdgeInsetsMake(30.0,
0.0,
0.0,
0.0)];
[self setTitle:title forState:stateType];
}
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原文地址:http://www.cnblogs.com/wangyang1213/p/5411498.html