android 动态改变listview的内容

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
> <Button
android:text="点击改变listview"
android:onClick="changeListView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/> <ListView
android:id="@+id/listview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
</LinearLayout>

package com.example.listView_MultiPage;import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;import java.util.LinkedList;public class MyActivity extends Activity {
private ListView listView;
private ArrayAdapter arrayAdapter;
private LinkedList<String> data = new LinkedList<String>();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
listView = (ListView) findViewById(R.id.listview); //为listView添加数据
for(int i=0; i<5; i++) {
data.add(""+i);
} arrayAdapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, data);
listView.setAdapter(arrayAdapter); } //button控件的点击方法
public void changeListView(View view) {
//先改变数据对象data
data.addFirst("动态改变ListView后");
//调用adapter的通知方法告诉listview数据已经改变
arrayAdapter.notifyDataSetChanged();
}
}