代码如下：

package com.myapp.lee.datetest;

import android.app.Activity;

import android.os.Bundle;

import android.util.Log;

import android.view.Window;

import android.widget.DatePicker;

import android.widget.TextView;

import android.widget.TimePicker;

import java.util.Calendar;

public class MainActivity extends Activity {

    private DatePicker dp;

    private TimePicker tp;

    private Calendar cal;

    private TextView tv;

    private int year;

    private int month;

    private int day;

    private int hours;

    private int min;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

//        this.requestWindowFeature(Window.FEATURE_NO_TITLE);

        setContentView(R.layout.layout);

//        tv = (TextView)findViewById(R.id.textView);

        cal = Calendar.getInstance();

        year = cal.get(Calendar.YEAR);

        month = cal.get(Calendar.MONTH)+1;

        day = cal.get(Calendar.DAY_OF_MONTH);

        hours = cal.get(Calendar.HOUR_OF_DAY);

        min = cal.get(Calendar.MINUTE);

        setTitle(year + "/" + month + "/" + day + " " + hours + ":" + min);

        dp = (DatePicker)findViewById(R.id.datePicker);

        tp = (TimePicker)findViewById(R.id.timePicker);

        dp.init(year, cal.get(Calendar.MONTH), day, new DatePicker.OnDateChangedListener() {

            @Override

            public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {

                Log.i("tag", "Done");

                setTitle(year + "/" + monthOfYear + "/" + dayOfMonth);

            }

        });

    }

}