ios 設定 UILabel的行間距

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          //行高          #define kLineSpace 1.5    self.memo.text = self.ticketModel.memo;     //設定字型大小    self.memo.font = kFontSize(12);     //計算字型size    CGSize memoSize =  [self.memo.textsizeWithFont:kFontSize(12) maxSize:CGSizeMake(260, MAXFLOAT)];     //計算加入行高後文字的高度    CGFloat linesH = (memoSize.height / 12 - 1) * kLineSpace;     //建立文字屬性
    NSMutableAttributedString *attributedString = [[NSMutableAttributedStringalloc] initWithString:self.memo.text];    NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStylealloc] init];     //調整行間距    [paragraphStyle setLineSpacing:kLineSpace];    [attributedString addAttribute:NSParagraphStyleAttributeNamevalue:paragraphStyle range:NSMakeRange(0, [self.memo.text length])];     self.memo.width = memoSize.width;    self.memo.height = linesH;          //設定文字屬性    self.memo.attributedText = attributedString;
    [ self.memo sizeToFit];
    self.topView.height  = CGRectGetMaxY(self.memo.frame) + 10;    self.myScrollView.contentSize = CGSizeMake(self.view.width, self.topView.height + 10);

ios 設定 UILabel的行間距