表格视图行高在 iOS 中不起作用

Question

I would like to change dynamically the height of the selected row.

The documentation says heightForRowAtIndexPath: is the best way to do so.

I got here so far. The tap is detected but the row height doesn't change:

override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    func tableView(tableView: UITableView, heightForRowAt: IndexPath) -> CGFloat {
        return 490.0
    }
// print("helloworld")
}

Answer 1

You don't implement the heightForRowAt: method inside the didSelectRowAt: method. You need to update your data model when the row is selected and then tell the table to reload that one row. Then your implementation of heightForRowAt: returns the appropriate height for the given indexPath based on your data model.