<?xml version="1.0" encoding="utf-8"?>

//佈局
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>

    <RelativeLayout
android
 
:layout_width="wrap_content"
android:layout_height="wrap_content">

        <Button
android:id="@+id/bt_choose"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="選擇"
android:layout_alignParentRight="true"
/>

        <EditText
android:id="@+id/et_date"
android
 
:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_toLeftOf="@+id/bt_choose"
/>

    </RelativeLayout>

    <RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">

        <Button
android:id="@+id/bt_choose_time"
android:layout_width=
 
"wrap_content"
android:layout_height="wrap_content"
android:text="選擇"
android:layout_alignParentRight="true"
/>

        <EditText
android:id="@+id/et_time"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_toLeftOf="@+id/bt_choose_time"
/>

    </RelativeLayout>

</LinearLayout>

———————————————//程式碼部分\\—————————————————————————————————

package com.zhidi.datedemo;

import android.app.DatePickerDialog;
import android.app.TimePickerDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.TimePicker;

import java.util.Calendar;

public class MainActivity extends AppCompatActivity implements View.OnClickListener{
    private EditText et_date,et_time;
    private Button bt_choose,bt_choose_time;
    @Override
protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
        initLitenter();
    }

//控制元件初始化
    private void initView(){
        et_date= (EditText) findViewById(R.id.et_date);
        bt_choose= (Button) findViewById(R.id.bt_choose);
        et_time= (EditText) findViewById(R.id.et_time);
        bt_choose_time= (Button) findViewById(R.id.bt_choose_time);
    }

//監聽初始化

    private void initLitenter(){
        bt_choose.setOnClickListener(this);
        bt_choose_time.setOnClickListener(this);

    }
    @Override
public void onClick(View v) {
        Calendar calendar =Calendar.getInstance();
        int year=calendar.get(Calendar.YEAR);
        int month=calendar.get(Calendar.MONTH);
        int day=calendar.get(Calendar.DAY_OF_MONTH);
        int hour=calendar.get(Calendar.HOUR_OF_DAY);
        int minute=calendar.get(Calendar.MINUTE);
//回撥
        switch(v.getId()){
            case R.id.bt_choose:
                DatePickerDialog datePickerDialog=new DatePickerDialog(MainActivity.this, new DatePickerDialog.OnDateSetListener() {
                    @Override
public void onDateSet(DatePicker view, int year, int month, int day) {
                        et_date.setText(year+"-"+(month+1)+"-"+day);
                    }

                }, year, month, day);
                datePickerDialog.show();
                break;
            case R.id.bt_choose_time:
                TimePickerDialog timePickerDialog = new TimePickerDialog(MainActivity.this, new TimePickerDialog.OnTimeSetListener() {
                    @Override
public void onTimeSet(TimePicker view, int hour, int minute) {
                        et_time.setText(hour+":"+minute);
                    }
                }, hour, minute, true);
                timePickerDialog.show();
                break;
                default:break;
        }

    }
}