UITableViewCells之间的间距

Question

我正在swift创建一个ios应用程序,并希望在像Facebook这样的单元格之间添加间距(pic bellow).

我正在为帖子使用自定义笔尖.我知道要使用UITableViewController.我想我会使用分隔符样式,但它没有达到效果.我瞪了几个小时,无法在swift中找到一个有意义的教程!有人可以解释他们是如何使用swift在那里做的吗？谢谢!

Answer 1

这是我的结果解决方案:(基于Jorge Casariego的回答)

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as! CustomApplicationCell

    cell.contentView.backgroundColor = UIColor.clear

    let whiteRoundedView : UIView = UIView(frame: CGRectMake(10, 8, self.view.frame.size.width - 20, 149))

    whiteRoundedView.layer.backgroundColor = CGColorCreate(CGColorSpaceCreateDeviceRGB(), [1.0, 1.0, 1.0, 0.8])
    whiteRoundedView.layer.masksToBounds = false
    whiteRoundedView.layer.cornerRadius = 2.0
    whiteRoundedView.layer.shadowOffset = CGSizeMake(-1, 1)
    whiteRoundedView.layer.shadowOpacity = 0.2

    cell.contentView.addSubview(whiteRoundedView)
    cell.contentView.sendSubviewToBack(whiteRoundedView)

    return cell
}

表行高:165点

标题部分高度,页脚部分高度:10磅

和结果

编辑Swift 3语法:

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! CustomApplicationCell

    cell.contentView.backgroundColor = UIColor.clear

    let whiteRoundedView : UIView = UIView(frame: CGRect(x: 10, y: 8, width: self.view.frame.size.width - 20, height: 120))

    whiteRoundedView.layer.backgroundColor = CGColor(colorSpace: CGColorSpaceCreateDeviceRGB(), components: [1.0, 1.0, 1.0, 0.9])
    whiteRoundedView.layer.masksToBounds = false
    whiteRoundedView.layer.cornerRadius = 2.0
    whiteRoundedView.layer.shadowOffset = CGSize(width: -1, height: 1)
    whiteRoundedView.layer.shadowOpacity = 0.2

    cell.contentView.addSubview(whiteRoundedView)
    cell.contentView.sendSubview(toBack: whiteRoundedView)

    return cell
}

以下是将视图显示为素材卡的新方法:

创建CardView.swift

@IBDesignable
class CardView: UIView {

    @IBInspectable var cornerRadius: CGFloat? = 5

    @IBInspectable var shadowOffsetWidth: Int? = 0
    @IBInspectable var shadowOffsetHeight: Int? = 2
    @IBInspectable var shadowColor: UIColor? = .black
    @IBInspectable var shadowOpacity: Float? = 0.3

    override func layoutSubviews() {
        layer.cornerRadius = cornerRadius!
        let shadowPath = UIBezierPath(roundedRect: bounds, cornerRadius: cornerRadius!)

        layer.masksToBounds = false
        layer.shadowColor = shadowColor?.cgColor
        layer.shadowOffset = CGSize(width: shadowOffsetWidth!, height: shadowOffsetHeight!);
        layer.shadowOpacity = shadowOpacity!
        layer.shadowPath = shadowPath.cgPath
    }
}

现在只需将CardView类添加到您的UIView中.

Answer 2

使用Swift 2,您可以通过以下方式在UITableViewCells之间进行间隔:

在你的TableViewController中复制:

    // In this case I returning 140.0. You can change this value depending of your cell
    override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
        return 140.0
    }

    override func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {

        cell.contentView.backgroundColor = UIColor.clearColor()

        let whiteRoundedView : UIView = UIView(frame: CGRectMake(0, 10, self.view.frame.size.width, 120))

        whiteRoundedView.layer.backgroundColor = CGColorCreate(CGColorSpaceCreateDeviceRGB(), [1.0, 1.0, 1.0, 1.0])
        whiteRoundedView.layer.masksToBounds = false
        whiteRoundedView.layer.cornerRadius = 2.0
        whiteRoundedView.layer.shadowOffset = CGSizeMake(-1, 1)
        whiteRoundedView.layer.shadowOpacity = 0.2

        cell.contentView.addSubview(whiteRoundedView)
        cell.contentView.sendSubviewToBack(whiteRoundedView)
    }

这是结果:

Answer 3

我花了至少一个小时研究这个话题.最后,我想出了一个使用透明边框的想法:

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "faqCell", for: indexPath)

    // ...

    cell.layer.borderWidth = CGFloat(TABLE_CELLSPACING)
    cell.layer.borderColor = tableView.backgroundColor?.cgColor

    return cell
}

这在Swift 3/Xcode 8中完美运行.

图片:这就是我身边的样子

Answer 4

Swift 4 的代码

override var frame: CGRect {
        get {
            return super.frame
        }
        set (newFrame) {
            var frame =  newFrame
            frame.origin.y += 4
            frame.size.height -= 2 * 5
            super.frame = frame
        }
    }

Answer 5

这些方法将帮助您实现间距：-

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return 1;
}
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{
return 15;
}

- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{
UIView *invisibleView=[[UIView alloc]initWithFrame:CGRectMake(0, 0, [UIScreen mainScreen].bounds .size.width, 15)];
[invisibleView setBackgroundColor:[UIColor clearColor]];
return invisibleView;

}