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;
    }

}