设置Label的行间距

有时候只有一个Label比较要设置Label每行的间距 可以用下面方法

- (void)labelSpacing:(NSString *)textString
{
    NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:textString];
    NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
    [paragraphStyle setLineSpacing:10];//调整行间距
    [attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [textString length])];
    self.contentLabel.attributedText = attributedString;
    [self.contentLabel sizeToFit];
}