TimePickerDialog

workspace/TimePicker/res/layout/main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  >
<TextView
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:text="@string/hello"
  />
<Button
  android:id="@+id/starttimepicker"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:text="Start TimePicker"
  />
</LinearLayout>

workspace/TimePicker/src/com/TimePicker/TimePicker.java

package com.TimePicker;

import java.util.Calendar;

import android.app.Activity;
import android.app.Dialog;
import android.app.TimePickerDialog;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class TimePicker extends Activity {
 
 private int hour, minute;
 static final int ID_TIMEPICKER = 0;
 
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
    
      Button startTimePicker = (Button)findViewById(R.id.starttimepicker);
      startTimePicker.setOnClickListener(new Button.OnClickListener(){

   @Override
   public void onClick(View arg0) {
    // TODO Auto-generated method stub
    final Calendar c = Calendar.getInstance();
       hour = c.get(Calendar.HOUR_OF_DAY);
       minute = c.get(Calendar.MINUTE);
       showDialog(ID_TIMEPICKER);
   }});
  }

  @Override
 protected Dialog onCreateDialog(int id) {
  // TODO Auto-generated method stub
   switch(id){
   case ID_TIMEPICKER:
    return new TimePickerDialog(this, timeSetListener, hour, minute, false); 
   default:
    return null;
   }
 }

 private TimePickerDialog.OnTimeSetListener timeSetListener
  = new TimePickerDialog.OnTimeSetListener(){

  @Override
  public void onTimeSet(android.widget.TimePicker arg0, int arg1, int arg2) {
   // TODO Auto-generated method stub
   Toast.makeText(getBaseContext(),
           String.valueOf(arg1) + ":" + String.valueOf(arg2),
           Toast.LENGTH_LONG).show();
  }};
}