UILable字体颜色控制

NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:@"系统详细的使用手册，请点击查看【移动监管用户手册】"];
    
    [str addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(14,str.length-1)];
    
    [str addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(6,12)];
    
    [str addAttribute:NSForegroundColorAttributeName value:[UIColor greenColor] range:NSMakeRange(19,6)];
    
    [str addAttribute:NSFontAttributeName value:[UIFont fontWithName:@"Arial-BoldItalicMT" size:30.0] range:NSMakeRange(0, 5)];
    
    [str addAttribute:NSFontAttributeName value:[UIFont fontWithName:@"HelveticaNeue-Bold" size:30.0] range:NSMakeRange(6, 12)];
    
    [str addAttribute:NSFontAttributeName value:[UIFont fontWithName:@"Courier-BoldOblique" size:30.0] range:NSMakeRange(19, 6)];
    
    lbtext.attributedText = str;