Android DatePickerDialog用法

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="wrap_content"    android:orientation="vertical" >    <TextView        android:id="@+id/text01"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="查詢日期:"        android:textSize="18sp"        />    <TextView         android:id="@+id/tvDate"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_below="@id/text01"        android:layout_alignLeft="@id/text01"        />    <Button         android:id="@+id/btnDatePicker"        android:text="編輯"        android:layout_toRightOf="@id/tvDate"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:onClick="show"        android:layout_alignTop="@id/tvDate"        /></RelativeLayout>

 

package com.turboradio;import java.text.SimpleDateFormat;import java.util.Calendar;import android.app.Activity;import android.app.DatePickerDialog;import android.os.Bundle;import android.view.View;import android.widget.DatePicker;import android.widget.TextView;public class DatePickerActivity extends Activity {private TextView tvDate;private Calendar cal = Calendar.getInstance();private DatePickerDialog.OnDateSetListener listener = new DatePickerDialog.OnDateSetListener() {@Overridepublic void onDateSet(DatePicker view, int year, int monthOfYear,int dayOfMonth) {cal.set(Calendar.YEAR, year);cal.set(Calendar.MONTH, monthOfYear);cal.set(Calendar.DAY_OF_MONTH, dayOfMonth);updateDate();}};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.date_picker_dialog);tvDate = (TextView)findViewById(R.id.tvDate);}public void show(View v){new DatePickerDialog(DatePickerActivity.this,listener,cal.get(Calendar.YEAR),cal.get(Calendar.MONTH),cal.get(Calendar.DAY_OF_MONTH)).show();}private void updateDate(){SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");tvDate.setText(simpleDateFormat.format(cal.getTime()));}}