日期和时间是任何手机平台都有的功能，Android也如此。
DatePicker：用来实现日期（年月日）
TimePicker：用来实现时间（时分秒）
Calendar：日历是设定年度日期对象和一个整数字段之间转换的抽象基类，如，月，日，小时等。
例如
final Calendar calendar=Calendar.getInstance();
mYear=calendar.get(Calendar.YEAR);—获取年份
mMonth=calendar.get(Calendar.MONTH);—获取月份
mDay=calendar.get(Calendar.DAY_OF_MONTH);—获取日
mHour=calendar.get(Calendar.HOUR_OF_DAY);—获取时
mMinute=calendar.get(Calendar.MINUTE);—获取分
等等，可以参考API文档
TimePickerDialog、DatePickerDialog是对话框形式的时间类。
废话不多说，实例如下：
DateTest.java文件
package org.loulijun.datetest;
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.widget.Button;
import android.widget.DatePicker;
import android.widget.TextView;
import android.widget.TimePicker;
public class DateTest extends Activity {
/** Called when the activity is first created. */
TextView textview;
TimePicker timepicker;
DatePicker datepicker;
Button btn1;
Button btn2;
//JAVA中的Calendar类
Calendar c;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
/*Like other locale-sensitive classes, Calendar provides a class method, getInstance,
*for getting a default instance of this class for general use.
*Calendar's getInstance method returns a calendar whose locale is based on system settings
*and whose time fields have been initialized with the current date and time:
*/
c=Calendar.getInstance();
textview=(TextView)findViewById(R.id.textview);
btn1=(Button)findViewById(R.id.button1);
btn2=(Button)findViewById(R.id.button2);
//获取DatePicker对象
datepicker=(DatePicker)findViewById(R.id.datepicker1);
//将日历初始化为当前系统时间，并设置其事件监听
datepicker.init(c.get(Calendar.YEAR),c.get(Calendar.MONTH),c.get(Calendar.DAY_OF_MONTH),
new DatePicker.OnDateChangedListener() {
@Override
public void onDateChanged(DatePicker view, int year, int monthOfYear,
int dayOfMonth) {
// TODO Auto-generated method stub
//当前日期更改时，在这里设置
c.set(year,monthOfYear,dayOfMonth);
}
});
//获取TimePicker对象
timepicker=(TimePicker)findViewById(R.id.timepicker1);
//设置为24小时制显示时间
timepicker.setIs24HourView(true);
//监听时间改变
timepicker.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() {
@Override
public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {
// TODO Auto-generated method stub
//时间改变处理
//c.set(year,month,hourOfDay,minute,second);
}
});
btn1.setOnClickListener(new Button.OnClickListener()
{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
new DatePickerDialog(DateTest.this,
new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear,
int dayOfMonth) {
//设置日历
}
},c.get(Calendar.YEAR),c.get(Calendar.MONTH),c.get(Calendar.DAY_OF_MONTH)).show();
}
});
btn2.setOnClickListener(new Button.OnClickListener()
{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
new TimePickerDialog(DateTest.this,
new TimePickerDialog.OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
// TODO Auto-generated method stub
//设置时间
}
},c.get(Calendar.HOUR_OF_DAY),c.get(Calendar.MINUTE),true).show();
}
});
}
}
main.xml文件
< 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"
>
<TextView
android:id="@+id/textview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="时间控件使用"
/>
<DatePicker
android:id="@+id/datepicker1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TimePicker
android:id="@+id/timepicker1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="设置日期"
android:layout_gravity="center"
/>
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="设置时间"
android:layout_gravity="center"
/>
</LinearLayout>
运行结果如下：
当点击“设置日期”按钮后，就会显示如下对话框样式的DatePickerDialog
当点击“设置时间”按钮后，就会弹出如下对话框样式的TimePickerDialog
