UIButton下image和title的各种位置的分类封装

为了防止丢失或遗忘，记录下这个UIButton的分类，用来实现上下，左右的iamge与title位置的按钮布局。

.h文件

#import@interface UIButton (typeLayout)

typedef NS_ENUM(NSUInteger,HLButtonEdgeInsetsStyle)

{

HLButtonEdgeInsetsStyleTop,//image在上，label在下

HLButtonEdgeInsetsStyleLeft,//image在左,label在右

HLButtonEdgeInsetsStyleBottom,//image在下，label在上

HLButtonEdgeInsetsStyleRight//image在右,label在左

};

/**

*  设置button内部的image和title的布局样式

*

*  @param style 布局样式

*  @param space 间距

*/

- (void)layoutButtonWithEdgeInsetsStyle:(HLButtonEdgeInsetsStyle)style imageTitleSpace:(CGFloat)space;

@end

.m文件

#import "UIButton+typeLayout.h"

@implementation UIButton (typeLayout)

- (void)layoutButtonWithEdgeInsetsStyle:(HLButtonEdgeInsetsStyle)style imageTitleSpace:(CGFloat)space

{

//1、得到imageView和titleLabel的宽、高

CGFloat imageWidth = self.imageView.frame.size.width;

CGFloat imageHeight = self.imageView.frame.size.height;

CGFloat labelWidth = 0;

CGFloat labelHeight = 0;

if([UIDevice currentDevice].systemVersion.floatValue >=8.0)

{

//由于iOS8中titleLabel的size为0，分开设置

labelWidth = self.titleLabel.intrinsicContentSize.width;

labelHeight = self.titleLabel.intrinsicContentSize.height;

}

else

{

labelWidth = self.titleLabel.frame.size.width;

labelHeight = self.titleLabel.frame.size.height;

}

//2、声明全局的imageEdgeInsets和labelEdgeInsets

UIEdgeInsets imageEdgeInsets = UIEdgeInsetsZero;

UIEdgeInsets labelEdgeInsets = UIEdgeInsetsZero;

//3、根据style和space设置

switch (style) {

case HLButtonEdgeInsetsStyleTop:

imageEdgeInsets = UIEdgeInsetsMake(-labelHeight-space/2.0, 0, 0, -labelWidth);

labelEdgeInsets = UIEdgeInsetsMake(0, -imageWidth, -imageHeight-space/2.0, 0);

break;

case HLButtonEdgeInsetsStyleLeft:

imageEdgeInsets = UIEdgeInsetsMake(0, -space/2.0, 0, space/2.0);

labelEdgeInsets = UIEdgeInsetsMake(0, space/2.0, 0, space/2.0);

break;

case HLButtonEdgeInsetsStyleBottom:

imageEdgeInsets = UIEdgeInsetsMake(0, 0, -labelHeight-space/2.0, -labelWidth);

labelEdgeInsets = UIEdgeInsetsMake(-labelHeight-space/2.0, 0, -imageWidth, 0);

break;

case HLButtonEdgeInsetsStyleRight:

imageEdgeInsets = UIEdgeInsetsMake(0, labelWidth+space/2.0, 0, -labelWidth-space/2.0);

labelEdgeInsets = UIEdgeInsetsMake(0, -imageWidth - space/2.0, 0, imageWidth+space/2.0);

break;

default:

break;

}

self.titleEdgeInsets = labelEdgeInsets;

self.imageEdgeInsets = imageEdgeInsets;

}

@end

直接调用，方便快捷！