Androidでの日付と時刻設定コントロールの使用例

package yyl.Android;
import java.text.DateFormat;
import java.util.Calendar;
import java.util.Locale;
import Android.app.Activity;
import Android.app.DatePickerDialog;
import Android.app.TimePickerDialog;
import Android.os.Bundle;
import Android.view.View;
import Android.widget.Button;
import Android.widget.DatePicker;
import Android.widget.TextView;
import Android.widget.TimePicker;
public class ChronoDemo extends Activity {
 //         
 DateFormat fmtDateAndTime = DateFormat.getDateTimeInstance();
 //    TextView    
 TextView dateAndTimeLabel = null;
 //        
 Calendar dateAndTime = Calendar.getInstance(Locale.CHINA);
 //   DatePickerDialog        ，     
 DatePickerDialog.OnDateSetListener d = new DatePickerDialog.OnDateSetListener()
 {
 @Override
 public void onDateSet(DatePicker view, int year, int monthOfYear,int dayOfMonth) {
  //        ， ， 
  //   year,monthOfYear,dayOfMonth   DatePickerDialog          
  dateAndTime.set(Calendar.YEAR, year);
  dateAndTime.set(Calendar.MONTH, monthOfYear);
  dateAndTime.set(Calendar.DAY_OF_MONTH, dayOfMonth); 
  //   TextView          
  updateLabel();  
 } 
 };
 TimePickerDialog.OnTimeSetListener t = new TimePickerDialog.OnTimeSetListener() {
 // DatePickerDialog  
 @Override
 public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
  dateAndTime.set(Calendar.HOUR_OF_DAY, hourOfDay);
  dateAndTime.set(Calendar.MINUTE, minute);
  updateLabel();
 }
 };
 @Override
 public void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.main);
 //               
 Button dateBtn = (Button)findViewById(R.id.setDate);
 //            
 dateBtn.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View v) {
  //    DatePickerDialog  ，   。   DatePickerDialog         ，   
  new DatePickerDialog(ChronoDemo.this,
   d,
   dateAndTime.get(Calendar.YEAR),
   dateAndTime.get(Calendar.MONTH),
   dateAndTime.get(Calendar.DAY_OF_MONTH)).show();
  }
 });
 Button timeBtn = (Button)findViewById(R.id.setTime);
 timeBtn.setOnClickListener(new View.OnClickListener() {
  //    
  @Override
  public void onClick(View v) {
  new TimePickerDialog(ChronoDemo.this,
   t,
   dateAndTime.get(Calendar.HOUR_OF_DAY),
   dateAndTime.get(Calendar.MINUTE),
   true).show();
  }
 });
 dateAndTimeLabel=(TextView)findViewById(R.id.dateAndTime);
 updateLabel();
 }
 //    TextView   
 private void updateLabel() {
 dateAndTimeLabel.setText(fmtDateAndTime
 .format(dateAndTime.getTime()));
 }
}