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1.UIButton+ImageTitleSpace.h
#import <UIKit/UIKit.h> // 定义一个枚举（包含了四种类型的button）
typedef NS_ENUM(NSUInteger, MKButtonEdgeInsetsStyle) {
MKButtonEdgeInsetsStyleTop, // image在上，label在下
MKButtonEdgeInsetsStyleLeft, // image在左，label在右
MKButtonEdgeInsetsStyleBottom, // image在下，label在上
MKButtonEdgeInsetsStyleRight // image在右，label在左
}; @interface UIButton (ImageTitleSpace) /**
* 设置button的titleLabel和imageView的布局样式，及间距
*
* @param style titleLabel和imageView的布局样式
* @param space titleLabel和imageView的间距
*/
- (void)layoutButtonWithEdgeInsetsStyle:(MKButtonEdgeInsetsStyle)style
imageTitleSpace:(CGFloat)space; @end
2.UIButton+ImageTitleSpace.m
#import "UIButton+ImageTitleSpace.h" @implementation UIButton (ImageTitleSpace) - (void)layoutButtonWithEdgeInsetsStyle:(MKButtonEdgeInsetsStyle)style
imageTitleSpace:(CGFloat)space {
/**
* 知识点：titleEdgeInsets是title相对于其上下左右的inset，跟tableView的contentInset是类似的，
* 如果只有title，那它上下左右都是相对于button的，image也是一样；
* 如果同时有image和label，那这时候image的上左下是相对于button，右边是相对于label的；title的上右下是相对于button，左边是相对于image的。
*/ // 1. 得到imageView和titleLabel的宽、高
CGFloat imageWith = self.imageView.frame.size.width;
CGFloat imageHeight = self.imageView.frame.size.height; CGFloat labelWidth = 0.0;
CGFloat labelHeight = 0.0;
if ([UIDevice currentDevice].systemVersion.floatValue >= 8.0) {
// 由于iOS8中titleLabel的size为0，用下面的这种设置
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得到imageEdgeInsets和labelEdgeInsets的值
/**
MKButtonEdgeInsetsStyleTop, // image在上，label在下
MKButtonEdgeInsetsStyleLeft, // image在左，label在右
MKButtonEdgeInsetsStyleBottom, // image在下，label在上
MKButtonEdgeInsetsStyleRight // image在右，label在左
*/
switch (style) {
case MKButtonEdgeInsetsStyleTop:
{
imageEdgeInsets = UIEdgeInsetsMake(-labelHeight-space/2.0, , , -labelWidth);
labelEdgeInsets = UIEdgeInsetsMake(, -imageWith, -imageHeight-space/2.0, );
}
break;
case MKButtonEdgeInsetsStyleLeft:
{
imageEdgeInsets = UIEdgeInsetsMake(, -space/2.0, , space/2.0);
labelEdgeInsets = UIEdgeInsetsMake(, space/2.0, , -space/2.0);
}
break;
case MKButtonEdgeInsetsStyleBottom:
{
imageEdgeInsets = UIEdgeInsetsMake(, , -labelHeight-space/2.0, -labelWidth);
labelEdgeInsets = UIEdgeInsetsMake(-imageHeight-space/2.0, -imageWith, , );
}
break;
case MKButtonEdgeInsetsStyleRight:
{
imageEdgeInsets = UIEdgeInsetsMake(, labelWidth+space/2.0, , -labelWidth-space/2.0);
labelEdgeInsets = UIEdgeInsetsMake(, -imageWith-space/2.0, , imageWith+space/2.0);
}
break;
default:
break;
} // 4. 赋值
self.titleEdgeInsets = labelEdgeInsets;
self.imageEdgeInsets = imageEdgeInsets;
} @end
3.使用
1.导入头文件
#import "UIButton+ImageTitleSpace.h"
2.在懒加载 按钮中调用
// 图片标题
- (UIButton *)imageTitleButton
{
if (!_imageTitleButton) {
_imageTitleButton = [[UIButton alloc]initWithFrame:CGRectZero];
_imageTitleButton.backgroundColor = [UIColor blackColor];
[_imageTitleButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[_imageTitleButton setImage:[UIImage imageNamed:@"nv"] forState:UIControlStateNormal];
_imageTitleButton.titleLabel.font = [UIFont systemFontOfSize:ImageTitleButtonFontSize];
//懒加载按钮中 调用即可
[_imageTitleButton layoutButtonWithEdgeInsetsStyle:MKButtonEdgeInsetsStyleLeft imageTitleSpace:]; [_imageTitleButton setContentEdgeInsets:UIEdgeInsetsMake(, , , )];
_imageTitleButton.clipsToBounds = YES;
_imageTitleButton.layer.cornerRadius = ;
_imageTitleButton.alpha = 0.5; }
return _imageTitleButton;
}