android常用UI使用案例：DatePicker和TimerPicker

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >

<DatePicker
android:id="@+id/date_picker"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />

<TimePicker
android:id="@+id/time_picker"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />

</LinearLayout>

package com.test.androidui;

import android.app.Activity;
import android.os.Bundle;
import android.widget.DatePicker;
import android.widget.TimePicker;

public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
DatePicker dp = (DatePicker) this.findViewById(R.id.date_picker);
dp.init(2015, 5, 1, null);

TimePicker tp = (TimePicker) this.findViewById(R.id.time_picker);
tp.setIs24HourView(true);

}
}