import java.util.Calendar;
import java.util.TimeZone;
 
import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.DatePickerDialog.OnDateSetListener;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.RelativeLayout;
import android.widget.TextView;
 
public class DatePickerDialogTest extends Activity {
 
	private RelativeLayout mainView=null;
	private TextView tv=null;
	private Button button=null;
	private DatePickerDialog dpd=null;
 
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mainView=new RelativeLayout(this);
        tv=new TextView(this);
        RelativeLayout.LayoutParams lp_tv=new RelativeLayout.LayoutParams(-2,-2);
        lp_tv.addRule(RelativeLayout.CENTER_IN_PARENT);
        tv.setLayoutParams(lp_tv);
        tv.setText("请设置日期");
        button=new Button(this);
        RelativeLayout.LayoutParams lp_button=new RelativeLayout.LayoutParams(-2,-2);
        lp_button.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
        lp_button.addRule(RelativeLayout.CENTER_HORIZONTAL);
        button.setLayoutParams(lp_button);
        button.setText("设置");
        button.setOnClickListener(new OnClickListener(){
			public void onClick(View v) {
				if(dpd==null){
					dpd_init();
				}
				dpd.show();
			}
        });
        mainView.addView(tv);
        mainView.addView(button);
        setContentView(mainView);
    }
    /*dpd初始化*/
    void dpd_init(){
    	OnDateSetListener otsl=new OnDateSetListener(){
			public void onDateSet(DatePicker view, int year, int monthOfYear,int dayOfMonth) {
				tv.setText("您设置了日期："+year+"年"+(monthOfYear+1)+"月"+dayOfMonth+"日");
				dpd.dismiss();
			}
    	};
    	Calendar calendar=Calendar.getInstance(TimeZone.getDefault());
    	int year=calendar.get(Calendar.YEAR);
    	int month=calendar.get(Calendar.MONTH);
    	int day=calendar.get(Calendar.DAY_OF_MONTH);
    	dpd=new DatePickerDialog(this,otsl,year,month,day);
    }
}

public class MainActivity extends Activity {
		private TimePicker tp = null;
 
		protected void onCreate(Bundle savedInstanceState) {
			super.onCreate(savedInstanceState);
			setContentView(R.layout.activity_main);
			this.tp = (TimePicker) super.findViewById(R.id.tp1);
			// 默认时间格式为12小时制的，这里我们改成24小时的制
			this.tp.setIs24HourView(true);
			// 设置为22点22分
			this.tp.setCurrentHour(22);
			this.tp.setCurrentMinute(22);
		}
	}