Tuesday, August 25, 2015

How to format DatePickerDialog selected date 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="#e3e9e9"
    >
    <TextView
        android:id="@+id/tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="15dp"
        android:textColor="#000000"
        android:fontFamily="sans-serif-condensed"
        />
    <Button
        android:id="@+id/btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Set Date"
        android:layout_below="@id/tv"
        />
</RelativeLayout>
MainActivity.java

package com.cfsuman.me.androidcodesnippets;

import android.app.AlertDialog;
import android.app.DatePickerDialog;
import android.app.Dialog;
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 java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import java.text.DateFormat;


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  dpd;
        }

        public void onDateSet(DatePicker view, int year, int month, int day){
            // Do something with the chosen date
            TextView tv = (TextView) getActivity().findViewById(R.id.tv);
            int actualMonth = month+1; // Because month index start from zero
            // Display the unformatted date to TextView
            tv.setText("Year : " + year + ", Month : " + actualMonth + ", Day : " + day + "\n\n");

            // Create a Date variable/object with user chosen date
            Calendar cal = Calendar.getInstance();
            cal.setTimeInMillis(0);
            cal.set(year, month, day, 0, 0, 0);
            Date chosenDate = cal.getTime();

            // Format the date using style medium and US locale
            DateFormat df_medium_us = DateFormat.getDateInstance(DateFormat.MEDIUM, Locale.US);
            String df_medium_us_str = df_medium_us.format(chosenDate);
            // Display the formatted date
            tv.setText(tv.getText() + df_medium_us_str + " (DateFormat.MEDIUM, Locale.US)\n");

            // Format the date using style medium and UK locale
            DateFormat df_medium_uk = DateFormat.getDateInstance(DateFormat.MEDIUM, Locale.UK);
            String df_medium_uk_str = df_medium_uk.format(chosenDate);
            // Display the formatted date
            tv.setText(tv.getText() + df_medium_uk_str + " (DateFormat.MEDIUM, Locale.UK)\n");

            // Format the date using style short
            DateFormat df_short = DateFormat.getDateInstance(DateFormat.SHORT);
            String df_short_str = df_short.format(chosenDate);
            // Display the formatted date
            tv.setText(tv.getText() + df_short_str + " (DateFormat.SHORT)\n");

            // Format the date using style long
            DateFormat df_long = DateFormat.getDateInstance(DateFormat.LONG);
            String df_long_str = df_long.format(chosenDate);
            // Display the formatted date
            tv.setText(tv.getText() + df_long_str + " (DateFormat.LONG)\n");

            // Format the date using style full
            DateFormat df_full = DateFormat.getDateInstance(DateFormat.FULL);
            String df_full_str = df_full.format(chosenDate);
            // Display the formatted date
            tv.setText(tv.getText() + df_full_str + " (DateFormat.FULL)\n");
        }
    }
}




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