Android控件之DatePicker、TimePicker初窥
一、DatePicker继承自FrameLayout类，日期选择控件的主要功能是向用户提供包含年、月、日的日期数据并允许用户对其修改。如果要捕获用户修改日期选择控件中的数据事件，需要为DatePicker添加OnDateChangedListener监听器。
二、TimePicker也继承自FrameLayout类。时间选择控件向用户显示一天中的时间（可以为24小时，也可以为AM/PM制），并允许用户进行选择。如果要捕获用户修改时间数据的事件，便需要为TimePicker添加OnTimeChangedListener监听器
以下模拟日期与时间选择控件的用法
目录结构
main.xml布局文件
<?
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
"
>
<
DatePicker android:id
=
"
@+id/datePicker
"
android:layout_width
=
"
wrap_content
"
android:layout_height
=
"
wrap_content
"
android:layout_gravity
=
"
center_horizontal
"
/>
<
EditText android:id
=
"
@+id/dateEt
"
android:layout_width
=
"
fill_parent
"
android:layout_height
=
"
wrap_content
"
android:cursorVisible
=
"
false
"
android:editable
=
"
false
"
/>
<
TimePicker android:id
=
"
@+id/timePicker
"
android:layout_width
=
"
wrap_content
"
android:layout_height
=
"
wrap_content
"
android:layout_gravity
=
"
center_horizontal
"
/>
<
EditText android:id
=
"
@+id/timeEt
"
android:layout_width
=
"
fill_parent
"
android:layout_height
=
"
wrap_content
"
android:cursorVisible
=
"
false
"
android:editable
=
"
false
"
/>
</
LinearLayout
>
DpTpActivity类
package
com.ljq.activity;
import
java.util.Calendar;
import
android.app.Activity;
import
android.os.Bundle;
import
android.widget.DatePicker;
import
android.widget.EditText;
import
android.widget.TimePicker;
import
android.widget.DatePicker.OnDateChangedListener;
import
android.widget.TimePicker.OnTimeChangedListener;
public
class
DpTpActivity
extends
Activity {
private
EditText dateEt
=
null
;
private
EditText timeEt
=
null
;
@Override
public
void
onCreate(Bundle savedInstanceState) {
super
.onCreate(savedInstanceState);
setContentView(R.layout.main);
dateEt
=
(EditText)findViewById(R.id.dateEt);
timeEt
=
(EditText)findViewById(R.id.timeEt);
DatePicker datePicker
=
(DatePicker)findViewById(R.id.datePicker);
TimePicker timePicker
=
(TimePicker)findViewById(R.id.timePicker);
Calendar calendar
=
Calendar.getInstance();
int
year
=
calendar.get(Calendar.YEAR);
int
monthOfYear
=
calendar.get(Calendar.MONTH);
int
dayOfMonth
=
calendar.get(Calendar.DAY_OF_MONTH);
datePicker.init(year, monthOfYear, dayOfMonth,
new
OnDateChangedListener(){
public
void
onDateChanged(DatePicker view,
int
year,
int
monthOfYear,
int
dayOfMonth) {
dateEt.setText(
"
您选择的日期是：
"
+
year
+
"
年
"
+
(monthOfYear
+
1
)
+
"
月
"
+
dayOfMonth
+
"
日。
"
);
}
});
timePicker.setOnTimeChangedListener(
new
OnTimeChangedListener(){
public
void
onTimeChanged(TimePicker view,
int
hourOfDay,
int
minute) {
timeEt.setText(
"
您选择的时间是：
"
+
hourOfDay
+
"
时
"
+
minute
+
"
分。
"
);
}
});
}
}
运行结果
