This app is an example of parsing XML (the top 25 iTunes Apps list) with Swift and self-sizing cells. It is a work in progress because self-sizing cells are still a little buggy. If you find bugs, please raise issues.
###XMLParser.swift
This class contains one protocol, XMLParserNotifications, which contains one delegate method: func didFinishParsingApps(apps:[App]). This is used to notify delegates that parsing has finished and passes an array of parsed [App]s.
A App is a struct that contains a parsed app name, summary, price and rights
###AppCell.swift
This is custom subclass of UITableViewCell.
It contains four labels for an app's name, summary, price and rights.
In func awakeFromNib() and func layoutSubviews() there is code related to ensuring that the cells will self-size correctly with multiple UILabels:
// MARK: Required for self-sizing cells.
self.appName.preferredMaxLayoutWidth = CGRectGetWidth(UIApplication.sharedApplication().keyWindow!.frame)
self.appRights.preferredMaxLayoutWidth = CGRectGetWidth(UIApplication.sharedApplication().keyWindow!.frame)
self.appPrice.preferredMaxLayoutWidth = CGRectGetWidth(UIApplication.sharedApplication().keyWindow!.frame)
self.appSummary.preferredMaxLayoutWidth = CGRectGetWidth(UIApplication.sharedApplication().keyWindow!.frame)
Commenting out any of the above will break self-sizing.
N.B.:All labels have their numberOfLines variable set to 0 in Storyboard.
###ViewController.swift
The view controller is a XMLParserNotifications delegate. When it receives the func didFinishParsingApps(apps:[App]) call it reloads its table view.
The following two lines of code are required for self-sizing cells:
appTableView.estimatedRowHeight = 110.0
appTableView.rowHeight = UITableViewAutomaticDimension