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iOS開發--如何調整Lable的字型行間距

// 調整行間距

NSMutableAttributedString *attributedString = [[NSMutableAttributedStringalloc] initWithString:self.contentLable.text];

NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStylealloc] init];

    [paragraphStyle setLineSpacing:10];

    [attributedString addAttribute:NSParagraphStyleAttributeName

value:paragraphStyle range:NSMakeRange(0, [self.contentLable.textlength])];

self.contentLable.attributedText = attributedString;

self.contentLable.lineBreakMode = NSLineBreakByCharWrapping;