android開發 列表顯示（ListView）

string.xml   [html]  <?xml version="1.0" encoding="utf-8"?>  <resources>        <string name="app_name">0_ListViewDemo</string>      <string name="hello_world">Hello world!</string>      <string name="menu_settings">Settings</string>      <string name="name">姓名</string>  </resources>   main.xml [html]  <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"      xmlns:tools="http://schemas.android.com/tools"      android:layout_width="match_parent"      android:layout_height="match_parent"      tools:context=".MainActivity" >        <TextView          android:layout_width="fill_parent"          android:layout_height="wrap_content"          android:text="@string/name"          />      <ListView          android:layout_width="fill_parent"          android:layout_height="wrap_content"          android:id="@+id/listview"          ></ListView>    </RelativeLayout>   下面就是java代碼了 [java] package com.example.atestlistview;    import android.os.Bundle;  import android.app.Activity;  import android.view.View;  import android.view.Menu;  import android.widget.AdapterView;  import android.widget.ArrayAdapter;  import android.widget.ListView;  import android.widget.Toast;    public class MainActivity extends Activity {        private ListView listView;      private String[] name = {"張三","李四","王五","劉六","張三","李四","王五","劉六"};            @Override      protected void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.activity_main);          listView = (ListView) findViewById(R.id.listview);          //建立一個ArrayAdapter          listView.setAdapter(new ArrayAdapter<String>(this,                  android.R.layout.simple_list_item_1, name));           //listView註冊一個元素點擊事件監聽器          listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {          @Override          //當某個元素被點擊時調用該方法          public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {              Toast.makeText(MainActivity.this,name[arg2] ,                      Toast.LENGTH_LONG).show();              }          });      }        @Override      public boolean onCreateOptionsMenu(Menu menu) {          // Inflate the menu; this adds items to the action bar if it is present.          getMenuInflater().inflate(R.menu.activity_main, menu);          return true;      }    }