Wednesday, August 26, 2015

How to set DatePickerDialog cancel button click listener in Android

activity_main.xml

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/rl"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="10dp"
    tools:context=".MainActivity"
    android:background="#e5e9e7"
    >
    <Button
        android:id="@+id/btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Set Date"
        />
</RelativeLayout>
MainActivity.java

package com.cfsuman.me.androidcodesnippets;

import android.app.AlertDialog;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.RelativeLayout;
import android.app.DialogFragment;
import android.widget.TextView;
import android.widget.Toast;

import java.text.DateFormat;
import java.util.Calendar;
import java.util.Date;


public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Get the widgets reference from XML layout
        final RelativeLayout rl = (RelativeLayout) findViewById(R.id.rl);
        Button btn = (Button) findViewById(R.id.btn);

        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // Initialize a new date picker dialog fragment
                DialogFragment dFragment = new DatePickerFragment();

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


    public static class DatePickerFragment extends DialogFragment
            implements DatePickerDialog.OnDateSetListener{

        @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);

            DatePickerDialog dpd = new DatePickerDialog(getActivity(),
                    AlertDialog.THEME_HOLO_LIGHT,this,year,month,day);

            // Return the DatePickerDialog
            return  dpd;
        }

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

        // Set a Listener for Dialog Cancel button click event
        /*
            onCancel(DialogInterface dialog)
                This method will be invoked when the dialog is canceled.
         */
        public void onCancel(DialogInterface dialog){
            // Send a message to confirm cancel button click
            Toast.makeText(getActivity(),"Date Picker Canceled.", Toast.LENGTH_SHORT).show();
        }
    }
}


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