简介
下面以一个让用户选择日期、时间的例子来示范DatePicker和TimePicker的功能和用法
step1:新建一个项目DateAndTimePicker
step2:编写应用的UI界面 /layout/main.xml
[html]
<?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:layout_width="fill_parent"
android:layout_height="wrap_content" android:text="选择购买此书的具体时间" />
<DatePicker android:id="@+id/datePicker"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"/>
<TimePicker android:id="@+id/timePicker"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"/>
<EditText android:layout_width="fill_parent"
android:layout_height="wrap_content" android:editable="false"
android:cursorVisible="false"
android:id="@+id/show" />
</LinearLayout>
step3:主程序MainActivity.java
[java]
package cn.roco.picker;
import java.util.Calendar;
import android.app.Activity;
import android.os.Bundle;
import android.widget.DatePicker;
import android.widget.DatePicker.OnDateChangedListener;
import android.widget.EditText;
import android.widget.TimePicker;
import android.widget.TimePicker.OnTimeChangedListener;
public class MainActivity extends Activity {
private int year;
private int month;
private int day;
private int hour;
private int minute;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
DatePicker datePicker = (DatePicker) findViewById(R.id.datePicker);
TimePicker timePicker = (TimePicker) findViewById(R.id.timePicker);
Calendar calendar = Calendar.getInstance();
year = calendar.get(Calendar.YEAR);
month = calendar.get(Calendar.MONTH);
day = calendar.get(Calendar.DAY_OF_MONTH);
hour = calendar.get(Calendar.HOUR);
minute = calendar.get(Calendar.MINUTE);
datePicker.init(year, month, day, new OnDateChangedListener() {
@Override
public void onDateChanged(DatePicker view, int year, int month,
int day) {
MainActivity.this.year = year;
MainActivity.this.month = month;
MainActivity.this.day = day;
// 显示时间
showDate(year, month, day, hour, minute);
}
});
timePicker.setOnTimeChangedListener(new OnTimeChangedListener() {
@Override
public void onTimeChanged(TimePicker view, int hour, int minute) {
MainActivity.this.hour = hour;
MainActivity.this.minute = minute;
// 显示时间
showDate(year, month, day, hour, minute);
}
});
}
private void showDate(int year, int month, int day, int hour, int minute) {
EditText show = (EditText) findViewById(R.id.show);
show.setText("您的购买日期为:" + year + "年" + month + "月" + day + "日 " + hour
+ "时" + minute + "分 ");
}
}
step4:部署应用到模拟器上，并选择日期和时间
