tederen_ios/smartRhino/Project/Tools/UILabel+TD.m

//
//  UILabel+TD.m
//  smartRhino
//
//  Created by tederen on 2019/10/22.
//  Copyright © 2019 tederen. All rights reserved.
//

#import "UILabel+TD.h"

@implementation UILabel (TD)

- (void)highlightString:(NSString *)string color:(UIColor *)color {
    NSMutableAttributedString *att = [[NSMutableAttributedString alloc]initWithString:self.text];
    NSString *temp = nil;
    for(int i = 0; i < [self.text length] - [string length]; i++){
        temp = [self.text substringWithRange:NSMakeRange(i,[string length])];
        if ([temp isEqualToString:string]) {
            NSRange range = NSMakeRange(i,[string length]);
            [att addAttribute:NSForegroundColorAttributeName value:color range:range];
        }
    }
    self.attributedText = att;
}
- (NSAttributedString *)subhighlightString:(NSString *)string color:(UIColor *)color {
    NSMutableAttributedString *att = [[NSMutableAttributedString alloc]initWithString:self.text];
    NSString *temp = nil;
    for(int i = 0; i <= [self.text length] - [string length]; i++){
        temp = [self.text substringWithRange:NSMakeRange(i,[string length])];
        if ([temp isEqualToString:string]) {
            NSRange range = NSMakeRange(i,[string length]);
            [att addAttribute:NSForegroundColorAttributeName value:color range:range];
        }
    }
    return  att;
}
- (void)highlightString:(NSString *)string color:(UIColor *)color withSpace:(CGFloat)space withFont:(UIFont*)font setLineSpace:(NSUInteger)headIndent setTextSpace:(CGFloat)textspace{
    if (string.length == 0) {
        return;
    }
    NSMutableAttributedString *att = [[NSMutableAttributedString alloc]initWithAttributedString:[self subhighlightString:string color:color]];
    
    NSMutableParagraphStyle *paraStyle = [[NSMutableParagraphStyle alloc] init];
    paraStyle.lineBreakMode = NSLineBreakByCharWrapping;
    paraStyle.alignment = NSTextAlignmentNatural;
    paraStyle.lineSpacing = space; //设置行间距
    paraStyle.hyphenationFactor = 1.0;
    paraStyle.firstLineHeadIndent = font.pointSize * headIndent;
    paraStyle.paragraphSpacingBefore = 0.0;
    paraStyle.headIndent = 0;
    
    NSDictionary *dic = @{NSFontAttributeName:font, NSParagraphStyleAttributeName:paraStyle, NSKernAttributeName:@(textspace)
                                 };
    
    [att addAttributes:dic range:NSMakeRange(0,self.text.length)];
    self.attributedText = att;
}
@end