How to determine if a Fragment has a constructor in Android?

In Android, a Fragment must have a public no-argument constructor so that the system can properly recreate it, for example, during a screen rotation.

To determine if such a constructor exists, you can check the fragment class for a no-argument constructor:

• In Java/Kotlin code, the default constructor is usually created automatically if no other constructors are declared.
• If a constructor with parameters is declared, you need to explicitly add a no-argument constructor.

Example of a no-argument constructor in Kotlin:

class MyFragment : Fragment() {
    constructor() : super() // no-argument constructor

    // Other constructors or methods
}

If there is no no-argument constructor, attempting to restore the fragment may result in an error.