TimePicker / TimePickerDialog - Android Widgets Example

package com.myapp;

import android.os.Bundle;
import android.app.Activity;
import android.app.TimePickerDialog;
import android.app.Dialog;
import android.view.Menu;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TimePicker;
import android.view.View;
import java.util.Calendar;

public class MainActivity extends Activity {
	
    private EditText editT1;
    private Button btn1;

    private int mHour;
    private int mMinute;

    static final int TIME_DIALOG_ID = 0;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
       
        
        // editText1
        editT1 = (EditText) findViewById(R.id.editText1);
        
        // button1
        btn1 = (Button) findViewById(R.id.button1);

        // add a click listener to the button
        btn1.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                showDialog(TIME_DIALOG_ID);
            }
        });

        // get the current time
        final Calendar c = Calendar.getInstance();
        mHour = c.get(Calendar.HOUR);
        mMinute = c.get(Calendar.MINUTE);

        // display the current time
        updateCurrentTime();
		
    }

    @Override
    protected Dialog onCreateDialog(int id) {
        switch (id) {
        case TIME_DIALOG_ID:
            return new TimePickerDialog(this,
            		mTimeSetListener,
            		mHour, mMinute, false);
        }
        return null;
    }
    
    // updates the time we display in the editText
    private void updateCurrentTime() {
    	editT1.setText(
            new StringBuilder()
                    .append(mHour).append(":")
                    .append(mMinute));
    }
    
    private TimePickerDialog.OnTimeSetListener mTimeSetListener =
            new TimePickerDialog.OnTimeSetListener() {

				public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
					// TODO Auto-generated method stub
	            	mHour = hourOfDay;
                	mMinute = minute;
                	updateCurrentTime();	
				}
     };
        
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
    
}