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：

　　

 1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

 2     xmlns:tools="http://schemas.android.com/tools"

 3     android:layout_width="match_parent"

 4     android:layout_height="match_parent"

 5     android:paddingBottom="@dimen/activity_vertical_margin"

 6     android:paddingLeft="@dimen/activity_horizontal_margin"

 7     android:paddingRight="@dimen/activity_horizontal_margin"

 8     android:paddingTop="@dimen/activity_vertical_margin"

 9     tools:context=".MainActivity" >

10 

11     <Button

12         android:id="@+id/button2"

13         android:layout_width="wrap_content"

14         android:layout_height="wrap_content"

15         android:layout_alignLeft="@+id/button1"

16         android:layout_alignParentBottom="true"

17         android:layout_alignRight="@+id/button1"

18         android:layout_marginBottom="29dp"

19         android:text="时间对话框" />

20 

21     <Button

22         android:id="@+id/button1"

23         android:layout_width="wrap_content"

24         android:layout_height="wrap_content"

25         android:layout_above="@+id/button2"

26         android:layout_alignParentLeft="true"

27         android:layout_marginBottom="25dp"

28         android:layout_marginLeft="72dp"

29         android:text="日期对话框" />

30 

31     <EditText

32         android:id="@+id/editText1"

33         android:layout_width="wrap_content"

34         android:layout_height="wrap_content"

35         android:layout_alignParentTop="true"

36         android:layout_centerHorizontal="true"

37         android:layout_marginTop="22dp"

38         android:ems="10"/>

39 

40 </RelativeLayout>

　　activity：

　　

 1 package com.example.android_date_timedialog;

 2 

 3 import java.util.Calendar;

 4 

 5 import android.app.Activity;

 6 import android.app.DatePickerDialog;

 7 import android.app.DatePickerDialog.OnDateSetListener;

 8 import android.app.TimePickerDialog;

 9 import android.app.TimePickerDialog.OnTimeSetListener;

10 import android.os.Bundle;

11 import android.view.Menu;

12 import android.view.View;

13 import android.widget.Button;

14 import android.widget.DatePicker;

15 import android.widget.EditText;

16 import android.widget.TimePicker;

17 import android.widget.Toast;

18 /**

19  * @author xiaowu

20  * NOTE:日期时间对话框控件，继承自AlertDialog对话框

21  */

22 public class MainActivity extends Activity {

23     private Button button ;

24     private Button button2 ;

25     private EditText editText ;

26     //日期对话框

27     private DatePickerDialog datePickerDialog ;

28     //时间选择对话框

29     private TimePickerDialog timePickerDialog;

30     private int year, monthOfYear, dayOfMonth, hourOfDay, minute, is24HourView ;

31     @Override

32     protected void onCreate(Bundle savedInstanceState) {

33         super.onCreate(savedInstanceState);

34         setContentView(R.layout.activity_main);

35         button = (Button) findViewById(R.id.button1);

36         button2 = (Button) findViewById(R.id.button2);

37         editText = (EditText) findViewById(R.id.editText1);

38         //初始化日历

39         Calendar calendar = Calendar.getInstance();

40         year = calendar.get(Calendar.YEAR);

41         monthOfYear = calendar.get(Calendar.MONTH);

42         dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH);

43         hourOfDay = calendar.get(Calendar.HOUR_OF_DAY);

44         minute = calendar.get(Calendar.MINUTE);

45         //初始化日期datePickerDialog,  注册日期选择监听器

46         datePickerDialog = new DatePickerDialog(MainActivity.this, new OnDateSetListener() {

47             @Override

48             public void onDateSet(DatePicker view, int year, int monthOfYear,

49                     int dayOfMonth) {

50                 // TODO Auto-generated method stub

51                 String text = year+"-"+(monthOfYear+1)+"-"+dayOfMonth ;

52                 editText.setText(text);

53             }

54         }, year, monthOfYear, dayOfMonth);

55         //按钮点击后显示日期选择datePickerDialog

56         button.setOnClickListener(new View.OnClickListener() {

57             @Override

58             public void onClick(View v) {

59                 // TODO Auto-generated method stub

60                 datePickerDialog.show();

61             }

62         });

63         //初始化时间timePickerDialog,  注册时间选择监听器

64         timePickerDialog = new TimePickerDialog(MainActivity.this, new OnTimeSetListener() {

65             @Override

66             public void onTimeSet(TimePicker view, int hourOfDay, int minute) {

67                 // TODO Auto-generated method stub

68                 Toast.makeText(MainActivity.this, hourOfDay+":"+minute, 1).show();

69             }

70         }, hourOfDay, minute, true);

71         //按钮点击后显示时间选择timePickerDialog

72         button2.setOnClickListener(new View.OnClickListener() {

73             @Override

74             public void onClick(View v) {

75                 // TODO Auto-generated method stub

76                 timePickerDialog.show();

77             }

78         });

79     }

80 

81     @Override

82     public boolean onCreateOptionsMenu(Menu menu) {

83         // Inflate the menu; this adds items to the action bar if it is present.

84         getMenuInflater().inflate(R.menu.main, menu);

85         return true;

86     }

87 

88 }