Android – How to achieve setOnClickListener in Kotlin?

There are six ways to use SetOnClickListener:

First:

button.setOnClickListener {
    // Do some work here
}

Second:

button.setOnClickListener(object : View.OnClickListener {
    override fun onClick(view: View?) {
        // Do some work here
    }

})

Third:

button.setOnClickListener(View.OnClickListener { view ->
    // Do some work here
})

Fourth:

class MainActivity : AppCompatActivity(), View.OnClickListener{
   
    lateinit var button : Button
            
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        button = findViewById(R.id.button1)
        button.setOnClickListener(this)
    }
        
    override fun onClick(view: View?) {
        when(view?.id){
            R.id.button1->{
                // do some work here
            }
        }
    }
}

Fifth:

class MainActivity : AppCompatActivity(){

    lateinit var button : Button

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        button = findViewById(R.id.button1)
        button.setOnClickListener(listener)
    }
    
    val listener= View.OnClickListener { view ->
        when (view.getId()) {
            R.id.button1 -> {
                // Do some work here
            }
        }
    }
}

Sixth

button.setOnClickListener { view ->         
    // Do some work here 
}

Cheers!