UILable换行调整间距

 UILabel *channelTypeLable = [UIHelper createLabel:@"aaa\nbbb\nccc" frame:CGRectMake(20, 40, DEVICEHEIGHT, 80) textColor:[UIHelper hexStringToColor:@"#999999"]];

channelTypeLable.lineBreakMode=NSLineBreakByCharWrapping;

channelTypeLable.numberOfLines = 0;

channelTypeLable.font = [UIFont systemFontOfSize:16];

 //调整行间距

NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc]initWithString:channelTypeLable.text];;

NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc]init];

[paragraphStyle setLineSpacing:5];

[attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [channelTypeLable.text length])];

channelTypeLable.attributedText = attributedString;

[self.view addSubview:channelTypeLable];