iOS为一段文字显示不同的颜色

//需求：0次为红色
    NSString *str = @" 您有 0 次拆红包的机会 " ;
    NSMutableAttributedString *attributedStr = [[ NSMutableAttributedString alloc ] initWithString :str];
    UIColor *color = [ AppUtils callColorFromHexRGB : @"5f5f5f" ];
    [attributedStr addAttribute : NSForegroundColorAttributeName
                          value :color
                          range :[str rangeOfString : @" 您有 次拆红包的机会 " ]];
    UIColor *color1 = [ UIColor redColor ];
    [attributedStr addAttribute : NSForegroundColorAttributeName
                          value :color1
                          range :[str rangeOfString : @"0" ]];
   

  

//设置label的行间距

  NSMutableParagraphStyle *paregraphStyle = [[ NSMutableParagraphStyle alloc ]
                                               init ];
    [paregraphStyle setLineSpacing : 10.0 ];

    [attributedStr addAttribute:NSParagraphStyleAttributeName value:paregraphStyle range:NSMakeRange(0, str.length)];

    hLabel = [[ UILabel alloc ] init ];

    hLabel . attributedText = attributedStr;