android 列表对话框

 

 

通过配置文件来完成列表对话框的一种显示

在values文件夹中新建一个fruit_data.xml

<?xml version="1.0" encoding="utf-8"?>

<resources>

  <string-array name="fruit_lables">

      <item >苹果</item>

      <item >雪梨</item>

      <item >桃子</item>

  </string-array>

</resources>

 

 

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="horizontal" >

    <TextView

        android:id="@+id/mych"

        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="请选择水果"/>

</LinearLayout>

 

 

 

 

在MyDialogDemo.java程序中

package com.tarena.dialog;

 

import android.app.Activity;

import android.app.AlertDialog;

import android.app.Dialog;

import android.content.DialogInterface;

import android.os.Bundle;

import android.view.KeyEvent;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.ImageButton;

import android.widget.TextView;

 

public class MyDialogDemo extends Activity {

  private Button mybut = null;  //定义按钮

  private TextView mych = null; //定义文本

    @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.mych = (TextView) super.findViewById(R.id.mybut);  //取得文本

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

       

    }

    private class OnClickListenerImpl implements OnClickListener{

 

     public void onClick(View view) {

       Dialog dialog = new AlertDialog.Builder(MyDialogDemo.this)

         .setIcon(R.drawable.ic_launcher)

         .setTitle("请选择您喜欢吃的水果")

         .setNegativeButton("取消", new DialogInterface.OnClickListener() {

           public void onClick(DialogInterface dialog, int which) {

            }

         }).setItems(R.array.fruit_lables, new DialogInterface.OnClickListener() {

           

           public void onClick(DialogInterface dialog, int which) {

              MyDialogDemo.this.mych.setText("您选择的水果是：" +

                   MyDialogDemo.this.getResources()

                     .getStringArray(R.array.fruit_lables)[which]);

            }

         }).create();

       dialog.show();

     }

    }

}