UILabel + UITextView 字間距和行間距

UILabel:建立category

.h

#import <UIKit/UIKit.h>

@interface UILabel (JKLableChangeLineSpace)

/**
 *  改變行間距
 */
+ (void)changeLineSpaceForLabel:(UILabel *)label WithSpace:(float)space;

/**
 *  改變字間距
 */
+ (void)changeWordSpaceForLabel:(UILabel *)label WithSpace:(float)space;

/**
 *  改變行間距和字間距
 */
+ (void)changeSpaceForLabel:(UILabel *)label withLineSpace:(float)lineSpace WordSpace:(float)wordSpace;


@end

.m

#import "UILabel+JKLableChangeLineSpace.h"

@implementation UILabel (JKLableChangeLineSpace)

+ (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

用法：

[UILabel changeLineSpaceForLabel:self.lable WithSpace:8];

UITextView：建立category

.h

/**
 *  改變行間距
 */
+ (void)changeLineSpaceForTextView:(UITextView *)textView WithSpace:(float)space;

.m

+ (void)changeLineSpaceForTextView:(UITextView *)textView WithSpace:(float)space
{
    
    //    1.靜態顯示textView的內容為設定的行間距，執行如下程式碼：
    
    
    
    //    textview 改變字型的行間距
    
        NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
    
        paragraphStyle.lineSpacing = 5;// 字型的行間距

    NSDictionary *attributes = @{

                                 NSFontAttributeName:[UIFont systemFontOfSize:15],

                                 NSParagraphStyleAttributeName:paragraphStyle
    
                                     };
    
        textView.attributedText = [[NSAttributedString alloc] initWithString:textView.text attributes:attributes];
}