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();
    }
}

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