UIButton *onlyPriceBtn = [UIButton buttonWithType:UIButtonTypeCustom];

onlyPriceBtn.layer.borderColor = [HuConfigration uiColorFromString:@"#F0493D"].CGColor;;

onlyPriceBtn.layer.borderWidth = 0.5f;

onlyPriceBtn.layer.cornerRadius = 4;

onlyPriceBtn.layer.masksToBounds = YES;

onlyPriceBtn.frame = CGRectMake(15, CGRectGetMaxY(titleLabel.frame)+15, HHBWIDTH - 30, 60);

[self.bgView addSubview:onlyPriceBtn];

UILabel *btnTitleLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 200, 60)];

btnTitleLabel.center = onlyPriceBtn.center;

btnTitleLabel.textColor = kHuColor(#A5A5A5);

btnTitleLabel.font = [UIFont customFontSize:12];

btnTitleLabel.numberOfLines = 0;

btnTitleLabel.text = @"獨享價30.0元\n購買後僅供自己觀看學習";//使用斜杠一定不要忘記寫numberOfLines 否則無效

btnTitleLabel.textAlignment = NSTextAlignmentCenter;

NSMutableAttributedString *attributer = [[NSMutableAttributedString alloc]initWithString:btnTitleLabel.text];

[attributer addAttribute:NSForegroundColorAttributeName

value:kHuColor(#F0493D)

range:NSMakeRange(0, 8)];

[attributer addAttribute:NSFontAttributeName

value:[UIFont customFontSize:16]

range:NSMakeRange(0, 8)];

NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc]init];//調整行間距

[paragraphStyle setLineSpacing:4];

[attributer addAttribute:NSParagraphStyleAttributeName

value:paragraphStyle

range:NSMakeRange(0, btnTitleLabel.text.length)];

[paragraphStyle setAlignment:NSTextAlignmentCenter];//為了美觀調整行間距，但是當調整行間距時上面設置的居中不能用看 所以要加這一句 [paragraphStyle setAlignment:NSTextAlignmentCenter] 不然沒有居中效果

btnTitleLabel.attributedText = attributer;

[self.bgView addSubview:btnTitleLabel];

效果圖

iOS UILabel換行同時修改字體大小顏色