04 Spinner 列表选中

<span style="font-size:18px;">
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <!--
        android:prompt=""设置标题 设置弹出模式时可以看  必须要写入string.xml中然后调用
        android:popupBackground=""弹出窗口的背景
        android:entries="" 要在string写入string-array
    <string-array name="book">
        <item>红楼梦</item>
        <item>三国演义</item>
        <item>桃花林</item>
    </string-array>
        android:spinnerMode="dialog" 模式 对话框
        "dropdown"下拉列表
     -->
    <Spinner
        android:id="@+id/spinner"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:entries="@array/book"
        android:spinnerMode="dropdown"
        android:prompt="@string/app_name1"
        />

</LinearLayout></span>

package com.fmy.a;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;<span style="display: none; width: 0px; height: 0px;" id="transmark"></span>
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Spinner;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.demo_textview);
        Spinner s = (Spinner) findViewById(R.id.spinner);
        s.setOnItemSelectedListener(new OnItemSelectedListener() {

            /**
             * parent指代Spinner s对象
             * view 被选中的子元素
             * position 被选中的元素的位置
             * id被选中子元素的id
             */
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {
                // TODO Auto-generated method stub

            }
        });
    }

}