<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    android:id="@+id/LinearLayout01"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    xmlns:android="http://schemas.android.com/apk/res/android">
    <EditText
        android:id="@+id/et"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:editable="false"
        android:cursorVisible="false" />

    <Button
        android:text="日期对话框"
        android:id="@+id/dateBtn"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

    <Button
        android:text="时间对话框"
        android:id="@+id/timeBtn"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

    <DigitalClock
        android:text="@+id/digitalClock"
        android:textSize="20dip"
        android:gravity="center"
        android:id="@+id/DigitalClock01"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

    <AnalogClock
        android:id="@+id/analogClock"
        android:gravity="center"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

package com.example.yanlei.my;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import java.util.Calendar;
import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.app.TimePickerDialog;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.TimePicker;

public class MainActivity extends AppCompatActivity {

    private Button dateBtn = null;
    private Button timeBtn = null;
    private EditText et=null;
    private final static int DATE_DIALOG = 0;
    private final static int TIME_DIALOG = 1;
    private Calendar c = null;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        et=(EditText)findViewById(R.id.et);
        dateBtn = (Button) findViewById(R.id.dateBtn);
        timeBtn = (Button) findViewById(R.id.timeBtn);
        dateBtn.setOnClickListener(new View.OnClickListener(){
            public void onClick(View v) {
                showDialog(DATE_DIALOG);
            }
        });

        timeBtn.setOnClickListener(new View.OnClickListener(){
            public void onClick(View v) {
                showDialog(TIME_DIALOG);
            }
        });
    }    /**     * 创建日期及时间选择对话框     */

    @Override
    protected Dialog onCreateDialog(int id) {
        Dialog dialog = null;
        switch (id) {
            case DATE_DIALOG:
                c = Calendar.getInstance();
                dialog = new DatePickerDialog(this,new DatePickerDialog.OnDateSetListener() {
                    public void onDateSet(DatePicker dp, int year,int month, int dayOfMonth) {
                        et.setText("您选择了：" + year + "年" + (month+1) + "月" + dayOfMonth + "日");
                    }
                }, c.get(Calendar.YEAR), // 传入年份
                        c.get(Calendar.MONTH), // 传入月份
                        c.get(Calendar.DAY_OF_MONTH) // 传入天数
                );
                break;
            case TIME_DIALOG:
                c=Calendar.getInstance();
                dialog=new TimePickerDialog(this,new TimePickerDialog.OnTimeSetListener(){
                    public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                        et.setText("您选择了："+hourOfDay+"时"+minute+"分");
                    }
                },
                        c.get(Calendar.HOUR_OF_DAY),
                        c.get(Calendar.MINUTE),
                        false
                );
                break;
        }
        return dialog;
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}