Debugging Tricks

See the Swift generated interface for Objective-C header file

If you are accessing an Objective-C class from Swift, you can see the Swift interface of the ObjC file: - Open the header file in Xcode, eg: MyClass.h - Press the square button on top left of the main editor ("Related Items") and choose Counterparts - You will see the item "MyClass.h (Swift 4.2 Interface)". This file will show the Swift interface

Send deep link to an app in a simulator

The target app's Info.plist should have the URL scheme acj registered. There should be a simulator running with the app installed.

xcrun simctl openurl booted "acj://message/1000"

See Background Color in UI views

• Set a background color for all your UI views in the storyboard

• Add all those views to a an IBOutlet Referencing Outlet collections (right click and choose "New Ref Out Coll..."

• Then in the viewDidLoad of your view controller, iterate through the colors and set the background color to clear

override func viewDidLoad\(\) {
  super.viewDidLoad\(\)

  // Clear background colors from labels and buttons.
  // backgroundColoredViews is a Reference Outlet collection created from the Storyboard

  for view in backgroundColoredViews {
    view.backgroundColor = UIColor.clear
  }
}