学步园

在main.xml中

<?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="fill_parent"

    android:orientation="vertical" >

    <TextView

        android:id="@+id/txt"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text=""/>

     <Button

        android:id="@+id/mybut"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="设置日期"/>

</LinearLayout>

在MyDialogDemo.java中

package com.tarena.dialog;

import android.app.Activity;

import android.app.AlertDialog;

import android.app.DatePickerDialog;

import android.app.Dialog;

import android.content.DialogInterface;

import android.os.Bundle;

import android.view.KeyEvent;

import android.view.LayoutInflater;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.DatePicker;

import android.widget.ImageButton;

import android.widget.TextView;

public class MyDialogDemo extends Activity {

  private Button mybut = null ; // 定义按钮

  @Override

  public void onCreate(Bundle savedInstanceState) {

     super.onCreate(savedInstanceState);

     super.setContentView(R.layout.main); // 调用布局管理器

     this.mybut = (Button) super.findViewById(R.id.mybut) ;  // 取得按钮

    this.mybut.setOnClickListener(new OnClickListenerImpl()) ;  // 设置事件类

  }

  private class OnClickListenerImpl implements OnClickListener {

     public void onClick(View view) {Dialog dialog = new DatePickerDialog(MyDialogDemo.this,

         new DatePickerDialog.OnDateSetListener() {

       public void onDateSet(DatePicker view, int year, int monthOfYear,

            int dayOfMonth) {

         TextView text = (TextView) MyDialogDemo.this.findViewById(R.id.txt);

         text.setText("更新的日期为：" + year + "年" + (monthOfYear+1) +

              "月" + dayOfMonth + "日"); //显示更新的日期

       }

     },1988, 7, 16); //默认年、月、日

     dialog.show();  //显示对话框

     }

  }

}