ANDROID笔记:ListPopupWindow的使用

You can use ListPopupWindow to anchor to a host view and display a list of options. In this recipe, you will learn to anchor ListPopupWindow to an EditTextcontrol. When the user clicks in theEditText control, ListPopupWindow will appear displaying a list of options. After the user selects an option from ListPopupWindow, it will be assigned to the EditText control. Create a new Android project called ListPopupWindowApp.

 

ListPopupWindowAppActivity.java

package com.androidtablet.listpopupwindowapp;



import android.os.Bundle;

import android.app.Activity;

import android.widget.ListPopupWindow;

import android.view.View;

import android.widget.ArrayAdapter;

import android.widget.EditText;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.AdapterView;

import android.view.View.OnClickListener;



public class ListPopupWindowAppActivity extends Activity

    implements OnItemClickListener {

    EditText productName;

    ListPopupWindow listPopupWindow;

    String[] products={"Camera", "Laptop", "Watch","Smartphone",

        "Television"};



    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_list_popup_window_app);

        productName = (EditText) findViewById(

            R.id.product_name);

        listPopupWindow = new ListPopupWindow(

            ListPopupWindowAppActivity.this);

        listPopupWindow.setAdapter(new ArrayAdapter(

            ListPopupWindowAppActivity.this,

            R.layout.list_item, products));

        listPopupWindow.setAnchorView(productName);

        listPopupWindow.setWidth(300);

        listPopupWindow.setHeight(400);



        listPopupWindow.setModal(true);

        listPopupWindow.setOnItemClickListener(

            ListPopupWindowAppActivity.this);

        productName.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {

                listPopupWindow.show();

            }

        });

    }



    @Override

    public void onItemClick(AdapterView<?> parent, View view,

        int position, long id) {

        productName.setText(products[position]);

        listPopupWindow.dismiss();

    }

}

list_item.xml 

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

<TextView xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:padding="6dp"

    android:textSize="@dimen/text_size"

    android:textStyle="bold" />

activity_list_popup_window_app.xml

<LinearLayout

    xmlns:android="http://schemas.android.com/apk/res/android"

    android:orientation="vertical"

    android:layout_width="match_parent"

    android:layout_height="match_parent">

    <EditText



        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:id="@+id/product_name"

        android:hint="Enter product name"

        android:textSize="@dimen/text_size" />

</LinearLayout>

转自:http://www.informit.com/articles/article.aspx?p=2078060&seqNum=4

书籍:The Android Developer's Cookbook