How to make a button in Dialog close that Dialog (Kotlin)

Issue

I have a custom dialog that's initialized in onCreate() of some Activity. It displays some text and a button. I want the button to close the dialog when clicked. How can I achieve this?

Here's my attempt that fails.

MyActivity.kt

class MyActivity : AppCompatActivity() {
    private lateinit var myDialog: Dialog
    override fun onCreate(savedInstanceState: Bundle?) {
        ...
        myDialog = Dialog(this)
        myDialog.setContentView(R.layout.my_dialog_layout)
        val button = myDialog.findViewById<Button>(R.id.closeButton)
        button.setOnClickListener {
            fun onClick(v: View) {
                myDialog.dismiss()
            }
        }
    }
}

my_dialog_layout.xml (I stripped away some properties)

<androidx.constraintlayout.widget.ConstraintLayout>

    <TextView
        android:text="Some Text" />

    <Button
        android:id="@+id/closeButton"
        android:text="Close Dialog" />

</androidx.constraintlayout.widget.ConstraintLayout>

Solution

Just replace

button.setOnClickListener {
    fun onClick(v: View) {
        myDialog.dismiss()
    }
}

with

button.setOnClickListener {
    fun onClick(v: View) {
        myDialog.dismiss()
    }
    onClick(it)
}

or to make it more simple

button.setOnClickListener {
     myDialog.dismiss()          
}

You have declared a nested function onClick inside the setOnClickListener lambda. As you have declared a nested function but have not called it inside your Dialog is not getting dismissed because myDialog.dismiss() block is not being executed.

Answered By - Alif Hasnain