<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:gravity="center_horizontal"    ><EditText     android:id="@+id/show"    android:layout_width="fill_parent"     android:layout_height="wrap_content"     android:inputType="none"    /><LinearLayout     android:orientation="horizontal"    android:layout_width="fill_parent"    android:layout_height="wrap_content"    android:gravity="center"    ><Button    android:id="@+id/dateBn"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="设置日期"    /><Button    android:id="@+id/timeBn"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="设置时间"    />    </LinearLayout></LinearLayout>

package com.example.datetimedialog;import java.util.Calendar;import android.app.Activity;import android.app.DatePickerDialog;import android.app.TimePickerDialog;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.DatePicker;import android.widget.EditText;import android.widget.TimePicker;public class MainActivity extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        Button dateBn=(Button) findViewById(R.id.dateBn);        Button timeBn=(Button) findViewById(R.id.timeBn);        dateBn.setOnClickListener(new OnClickListener(){            @Override            public void onClick(View v) {                Calendar c=Calendar.getInstance();                new DatePickerDialog(MainActivity.this, new DatePickerDialog.OnDateSetListener() {                                        @Override                    public void onDateSet(DatePicker view, int year,                            int monthOfYear, int dayOfMonth) {                        EditText show=(EditText) findViewById(R.id.show);                        show.setText("您选择了"+year+"年"+(monthOfYear+1)+"月"+dayOfMonth+"日");                                            }                }                ,c.get(Calendar.YEAR)                , c.get(Calendar.MONTH)                , c.get(Calendar.DAY_OF_MONTH)).show();            }                    });        timeBn.setOnClickListener(new OnClickListener(){            @Override            public void onClick(View v) {                Calendar c=Calendar.getInstance();                new TimePickerDialog(MainActivity.this, new TimePickerDialog.OnTimeSetListener() {                    @Override                    public void onTimeSet(TimePicker view, int hourOfDay,                            int minute) {                        EditText show=(EditText) findViewById(R.id.show);                        show.setText("您选择了"+hourOfDay+"时"+minute+"分");                    }                }                ,c.get(Calendar.HOUR_OF_DAY)                , c.get(Calendar.MINUTE)                , true).show();            }                    });    }}