开发中讲字符串中的数字改变颜色

 1  
 2     NSString * str =@"您一共购买2件商品，消费总额为：196";
 3     // 搜索文字
 4     NSString *tempStr = @"\\d{1,}";
 5     
 6     NSMutableArray *results = [NSMutableArray array];
 7     NSRange searchRange = NSMakeRange(0, [str length]);
 8     NSRange range;
 9     NSMutableAttributedString *string = [[NSMutableAttributedString alloc] initWithString:str];
10     while ((range = [str rangeOfString:tempStr options:NSRegularExpressionSearch range:searchRange]).location != NSNotFound)
11     {
12         [results addObject:[NSValue valueWithRange:range]];
13         searchRange = NSMakeRange(NSMaxRange(range), [str length] - NSMaxRange(range));
14         [string addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:range];
15     }
16      summary.attributedText = string;