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iOS Build a Playlist Browser with Swift Building the Master and Detail Views Connecting UI to Code

Jivago Raymond
Jivago Raymond
1,851 Points
Posted by Jivago Raymond
Jivago Raymond
1,851 Points

Warning: Attribute Unavailable: Automatic Preferred Max Layout Width is not available on iOS versions prior to 8.0

Warning: Attribute Unavailable: Automatic Preferred Max Layout Width is not available on iOS versions prior to 8.0

If like me, you have set a deployment target of iOS 7.1 in the Deployment Info of your Xcode project, you should have the warning mentioned above.

The instruction that is causing trouble is when you set the number of lines to 3 for the description label.

Here is how I fixed this warning;

  • Go to your file “Main.storyboard”
  • Select the Playlist description label (Below the title label)
  • Open the “Attributes inspector,” and in “Label / Lines” set the number of lines back to 1
  • Open the “Resolve auto Layout Issues”, and "Update Frames"

The warning is now gone.

  • Select the Playlist description label
  • Open the “Assistant editor”
  • Create an Outlet for the Playlist description label and name it playlistDescription
  • Set the number of lines programmatically in the viewDidLoad() method of the PlaylistDetailViewController class by adding the following elements;

@IBOutlet weak var playlistDescription: UILabel!

override func viewDidLoad() {

playlistDescription.numberOfLines = 3

}

Tested in iOS 7.1 and iOS 8.4 simulators. Everything is fine, no warning anymore.