释放双眼，带上耳机，听听看~！

可以在UILabel的Category中提供如下几个方法:

.h文件

@interface UILabel (ChangeLineSpaceAndWordSpace)

/**

* 改变行间距

*/

+ (void)changeLineSpaceForLabel:(UILabel *)label WithSpace:(float)space;

/**

* 改变字间距

*/

+ (void)changeWordSpaceForLabel:(UILabel *)label WithSpace:(float)space;

/**

* 改变行间距和字间距

*/

+ (void)changeSpaceForLabel:(UILabel *)label withLineSpace:(float)lineSpace WordSpace:(float)wordSpace;

@end

.m文件

@implementation UILabel (ChangeLineSpaceAndWordSpace)

+ (void)changeLineSpaceForLabel:(UILabel *)label WithSpace:(float)space {

NSString *labelText = label.text;

NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:labelText];

NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];

[paragraphStyle setLineSpacing:space];

[attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [labelText length])];

label.attributedText = attributedString;

[label sizeToFit];

}

+ (void)changeWordSpaceForLabel:(UILabel *)label WithSpace:(float)space {

NSString *labelText = label.text;

NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:labelText attributes:@{NSKernAttributeName:@(space)}];

NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];

[attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [labelText length])];

label.attributedText = attributedString;

[label sizeToFit];

}

+ (void)changeSpaceForLabel:(UILabel *)label withLineSpace:(float)lineSpace WordSpace:(float)wordSpace {

NSString *labelText = label.text;

NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:labelText attributes:@{NSKernAttributeName:@(wordSpace)}];

NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];

[paragraphStyle setLineSpacing:lineSpace];

[attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [labelText length])];

label.attributedText = attributedString;

[label sizeToFit];

}

@end

附: 在Xcode8中创建Category文件的方法:

在工程目录中右键选择New File...或者使用键盘command+N, 然后在弹出窗口中选择Objective-C File

新建文件

然后

起名字, 选择Category, 并选择要扩展的类

最后

设置好后点击Next完成