Creating a UITableView cell to have a dynamic height

问题

I'm trying to create a tableview cell to accommodate texts with varying lengths and I need each cell to have a dynamic height. I've tried using the below but no show:

    tableView.rowHeight = UITableViewAutomaticDimension
    tableView.estimatedRowHeight = 410

Can anybody help me please?

回答1:

To set automatic dimension for row height & estimated row height, ensure following steps to make, auto dimension effective for cell/row height layout. I just tested following steps and code and works fine.

Assign and implement tableview dataSource and delegate
Assign UITableViewAutomaticDimension to rowHeight & estimatedRowHeight
Implement delegate/dataSource methods (i.e. heightForRowAt and return a value UITableViewAutomaticDimension to it)

@IBOutlet weak var table: UITableView!

override func viewDidLoad() {
    super.viewDidLoad()

    // Don't forget to set dataSource and delegate for table
    table.dataSource = self
    table.delegate = self

    // Set automatic dimensions for row height
    table.rowHeight = UITableViewAutomaticDimension
    table.estimatedRowHeight = UITableViewAutomaticDimension
}



// UITableViewAutomaticDimension calculates height of label contents/text
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
    return UITableViewAutomaticDimension
}

For label instance in UITableviewCell

Set number of lines = 0 (& line break mode = truncate tail)
Set all constraints (top, bottom, right left) with respect to its superview/ cell container.
Optional: Set minimum height for label, if you want minimum vertical area covered by label, even if there is no data.

enter image description here

Note: If you've more than one labels (UIElements) with dynamic length, which should be adjusted according to its content size: Adjust 'Content Hugging and Compression Resistance Priority` for labels which you want to expand/compress with higher priority.

来源：https://stackoverflow.com/questions/48585335/creating-a-uitableview-cell-to-have-a-dynamic-height

标签

ios

swift

uitableview