[SOLVED] Update Interfaces in the Simulator (without SwiftUI)

Update Interfaces in the Simulator (without SwiftUI)

I have this example:

class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        // Line where the breakpoint will be placed
        view.backgroundColor = UIColor.green
    }
}

I want to add breakpoint, execute the app on the simulator, and when the execution is paused, I want to update the backgroundColor to blue and see the background on the simulator on blue color without reset the application.

Solution

To do this follow this steps:

1 - Set a breakpoint on the line where the background color is defined (view.backgroundColor = UIColor.green).

2 - Run the project in the simulator. The Xcode will pause the app execution when the breakpoint is hit.

3 - In the LLDB console (XCode), execute the following command:

e DispatchQueue.main.async { self.view.backgroundColor = UIColor.blue }

4 - Release the app's execution by pressing the "Continue" button in Xcode.

If you want more details about this solution, you can go on my published articles on Hackernoon or Medium.