How do I support self sizing cells on iOS7?

Question

With the release of iOS8 I have designed my table view with cells taking advantage of self sizing cells. But I need my tables to work in iOS7 as well. How do I do that? Is t

Answer 1

This is the solution I have found thus far, but it requires checking for specific version number rather than capability. You only set UITableViewAutomaticDimension if you have iOS 8 or higher as version:

override func viewDidLoad() {

    if NSFoundationVersionNumber > NSFoundationVersionNumber_iOS_7_1 {
        self.tableView.estimatedRowHeight = 80
        self.tableView.rowHeight = UITableViewAutomaticDimension
    }
}

For iOS 7 you need to calculate a height for each cell. But if you are on iOS 8 you can return UITableViewAutomaticDimension as the height:

override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
    if NSFoundationVersionNumber > NSFoundationVersionNumber_iOS_7_1 {
        return UITableViewAutomaticDimension
    }
    return 50 // Or whatever calculated value you need for cell height
}

Answer 2

For iOS versions older than 8.0, you can always write the usual heightForRowAtIndexPath method where you create a cell, run an auto layout pass on it and then return the actual height.