What steps are needed to launch a new screen in an Android application?

To launch a new screen (Activity) in Android, you need to:

1. Create a new class that inherits from Activity or AppCompatActivity.
2. Add the description of the new Activity to the AndroidManifest.xml file.
3. In the code of the current Activity, create an Intent pointing to the new screen.
4. Call the startActivity(intent) method to launch the new screen.

Example:

// Create an Intent
val intent = Intent(this, NewActivity::class.java)
// Launch the new screen
startActivity(intent)

This is the basic way to transition between screens in Android.