android 开发DatePickerDialog/TimePickerDialog对话框的实现

　AndroidAPI提供了Dialog对话框控件，DatePickerDialog/TimePickerDialog均是AlertDialog的子类，通过DatePickerDialog/TimePickerDialog日期/时间的对话框来进行时间的选择。

　　layout页面：

　　

 <RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
     android:paddingLeft="@dimen/activity_horizontal_margin"
     android:paddingRight="@dimen/activity_horizontal_margin"
     android:paddingTop="@dimen/activity_vertical_margin"
     tools:context=".MainActivity" >

     <Button
         android:id="@+id/button2"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_alignLeft="@+id/button1"
         android:layout_alignParentBottom="true"
         android:layout_alignRight="@+id/button1"
         android:layout_marginBottom="29dp"
         android:text="时间对话框" />

     <Button
         android:id="@+id/button1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_above="@+id/button2"
         android:layout_alignParentLeft="true"
         android:layout_marginBottom="25dp"
         android:layout_marginLeft="72dp"
         android:text="日期对话框" />

     <EditText
         android:id="@+id/editText1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_alignParentTop="true"
         android:layout_centerHorizontal="true"
         android:layout_marginTop="22dp"
         android:ems="10"/>

 </RelativeLayout>

　　activity：

　　

 package com.example.android_date_timedialog;

 import java.util.Calendar;

 import android.app.Activity;
 import android.app.DatePickerDialog;
 import android.app.DatePickerDialog.OnDateSetListener;
 import android.app.TimePickerDialog;
 import android.app.TimePickerDialog.OnTimeSetListener;
 import android.os.Bundle;
 import android.view.Menu;
 import android.view.View;
 import android.widget.Button;
 import android.widget.DatePicker;
 import android.widget.EditText;
 import android.widget.TimePicker;
 import android.widget.Toast;
 /**
  * @author xiaowu
  * NOTE:日期时间对话框控件，继承自AlertDialog对话框
  */
 public class MainActivity extends Activity {
     private Button button ;
     private Button button2 ;
     private EditText editText ;
     //日期对话框
     private DatePickerDialog datePickerDialog ;
     //时间选择对话框
     private TimePickerDialog timePickerDialog;
     private int year, monthOfYear, dayOfMonth, hourOfDay, minute, is24HourView ;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         button = (Button) findViewById(R.id.button1);
         button2 = (Button) findViewById(R.id.button2);
         editText = (EditText) findViewById(R.id.editText1);
         //初始化日历
         Calendar calendar = Calendar.getInstance();
         year = calendar.get(Calendar.YEAR);
         monthOfYear = calendar.get(Calendar.MONTH);
         dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH);
         hourOfDay = calendar.get(Calendar.HOUR_OF_DAY);
         minute = calendar.get(Calendar.MINUTE);
         //初始化日期datePickerDialog,  注册日期选择监听器
         datePickerDialog = new DatePickerDialog(MainActivity.this, new OnDateSetListener() {
             @Override
             public void onDateSet(DatePicker view, int year, int monthOfYear,
                     int dayOfMonth) {
                 // TODO Auto-generated method stub
                 String text = year+"-"+(monthOfYear+1)+"-"+dayOfMonth ;
                 editText.setText(text);
             }
         }, year, monthOfYear, dayOfMonth);
         //按钮点击后显示日期选择datePickerDialog
         button.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 // TODO Auto-generated method stub
                 datePickerDialog.show();
             }
         });
         //初始化时间timePickerDialog,  注册时间选择监听器
         timePickerDialog = new TimePickerDialog(MainActivity.this, new OnTimeSetListener() {
             @Override
             public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                 // TODO Auto-generated method stub
                 Toast.makeText(MainActivity.this, hourOfDay+":"+minute, 1).show();
             }
         }, hourOfDay, minute, true);
         //按钮点击后显示时间选择timePickerDialog
         button2.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 // TODO Auto-generated method stub
                 timePickerDialog.show();
             }
         });
     }

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

 }