How to set DatePickerDialog cancel button click listener in Android









MainActivity.java



package com.cfsuman.androidtutorials;

import android.app.DatePickerDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.DialogFragment;
import java.util.Calendar;


public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

// Get the widgets reference from XML layout
Button button = findViewById(R.id.button);


// Show the date picker dialog
button.setOnClickListener(v -> {
// Initialize a new date picker dialog fragment
DialogFragment dialogFragment = new DatePickerFragment();

// Show the date picker dialog fragment
dialogFragment.show(
getSupportFragmentManager(),
"Date Picker"
);
});
}



public static class DatePickerFragment extends DialogFragment
implements DatePickerDialog.OnDateSetListener{

@NonNull
@Override
public Dialog onCreateDialog(Bundle savedInstanceState){
final Calendar calendar = Calendar.getInstance();
int year = calendar.get(Calendar.YEAR);
int month = calendar.get(Calendar.MONTH);
int day = calendar.get(Calendar.DAY_OF_MONTH);

// Return the DatePickerDialog
return new DatePickerDialog(
getActivity(),0, this,year,month,day);
}


public void onDateSet(
DatePicker view, int year, int month, int day){
// Do something with the chosen date
}


public void onCancel(@NonNull DialogInterface dialog){
// Send a message to confirm cancel button click
Toast.makeText(
getActivity(),
"Date Picker Dialog Canceled.",
Toast.LENGTH_SHORT
).show();
}
}
}





activity_main.xml



<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#DCDCDC"
android:padding="24dp">

<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Show DatePickerDialog"
android:textAllCaps="false"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>