Android中Activity中与ListActivity中使用listview区别

Activity中使用Listview步骤：

1.xml布局中,ListView标签id可以任意取值

2.程序中通过findViewById获取该Listview对象

3.实例化Adapter

4.然后通过listView.setAdapter(adapter);  设置adapter绑定数据

ListActivity中使用Listview步骤：

1.xml布局中,ListView标签id必须写成android:id="@+id/android:list"

2.实例化Adapter

3.然后通过setListAdapter(adapter);设置adapter绑定数据

补充：程序中如果想获取Listview对象，通过getListView()方法

MainActivity.java

package com.whisker.listviewtext;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class MainActivity extends Activity {private Button acButton;private Button listAcButton;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        acButton = (Button) findViewById(R.id.ac);        listAcButton = (Button) findViewById(R.id.listac);        acButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {Intent intent = new Intent(MainActivity.this,ListInActivity.class);startActivity(intent);}});        listAcButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {Intent intent = new Intent(MainActivity.this,ListInListActivity.class);startActivity(intent);}});    }}

ListInActivity.java

package com.whisker.listviewtext;import android.app.Activity;import android.os.Bundle;import android.widget.ArrayAdapter;import android.widget.ListView;public class ListInActivity extends Activity{private final static String[] name = new String[] {"First","Second","Third"};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.listinactivity);ListView listView = (ListView) findViewById(R.id.listInActivity);ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.list_item,name);listView.setAdapter(adapter);}}

LitsInListActivity.java

package com.whisker.listviewtext;import android.app.ListActivity;import android.os.Bundle;import android.widget.ArrayAdapter;public class ListInListActivity extends ListActivity{private final static String[] name = new String[] {"First","Second","Third","Fourth"};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.listinlistactivity);ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.list_item,name);setListAdapter(adapter);}}

activity_main.xml

<LinearLayout 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"    android:orientation="vertical" >    <Button         android:id="@+id/ac"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Activity"        android:layout_gravity="center"        android:gravity="center"/>        <Button         android:id="@+id/listac"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="ListActivity"        android:layout_gravity="center"        android:gravity="center"/></LinearLayout>

listinactivity.xml

<?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" >        <TextView         android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="ListInActivity"        android:gravity="center"/>        <ListView         android:layout_width="match_parent"        android:layout_height="wrap_content"        android:id="@+id/listInActivity"></ListView>    </LinearLayout>

listinlistactivity.xml

<?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" >        <TextView         android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="ListInListActivity"        android:gravity="center"/>        <ListView         android:layout_width="match_parent"        android:layout_height="wrap_content"        android:id="@+id/android:list"></ListView>    </LinearLayout>

list_item.xml

<?xml version="1.0" encoding="utf-8"?>    <TextView xmlns:android="http://schemas.android.com/apk/res/android"        android:id="@+id/list"        android:layout_width="match_parent"        android:layout_height="match_parent"/>

一开始调试的时候，一直出错，后来发现是因为在Adapter实例化的时候，对应的xml文件list_item一开始写的是LinearLayout，虽然不知道为什么，但应该是ArrayAdapter对应的xml是这样要求的，SimpleAdapter就是可以LinearLayout。

效果图：