UILabel ，UITextView设置行间距

- (UITextView *)instructionTextView{

    

    if (!_instructionTextView) {

        _instructionTextView                   = [[UITextView alloc] init];

        _instructionTextView.layer.borderWidth = 1.0f;

        _instructionTextView.layer.borderColor = HexRGB(0xe6e6e6).CGColor;

        _instructionTextView.backgroundColor   = HexRGB(0xf9f9f9);

        _instructionTextView.font              = [UIFont systemFontOfSize:15];

        _instructionTextView.delegate          = self;

        _instructionTextView.textColor         = HexRGB(0x676767);

        _instructionTextView.textContainerInset = UIEdgeInsetsMake(10, 5, 10, 5);

        _instructionTextView.autoresizesSubviews = NO;

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

        paragraphStyle.lineSpacing = 7;// 字体的行间距

       NSDictionary *attributes = @{

                       NSFontAttributeName:[UIFont systemFontOfSize:14],

                       NSParagraphStyleAttributeName:paragraphStyle

                       };

        _instructionTextView.attributedText = [[NSAttributedString alloc] initWithString:@" " attributes:attributes];

    }

    return _instructionTextView;

}

获取内容的size大小：

    self.achievementSize =  [self.achievementTextView.text boundingRectWithSize:CGSizeMake(wei,2000.0f) options:NSStringDrawingUsesLineFragmentOrigin attributes:attributes context:nil].size;