Activity中与ListActivity中使用listview区别

一.Activity中与ListActivity中使用listview区别（本身没多大区别，只是ListActivity在listview的显示上做了一些优化）

Activity中使用Listview步骤：

1.xml布局中,ListView标签id可以任意取值如：

<ListView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/listview"
　　　　/>

2.程序中通过findViewById获取该Listview对象如：

ListView lv = (ListView)findViewById(R.id.listview);

3.实例化Adapter

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

lv.setAdapter(adapter);

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"如：

<ListView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/android:list"
/>

2.实例化Adapter

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

setListAdapter(adapter);

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

ListView lv = getListView();

上图：

源码目录结构：

完整源码：

1>AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.bravestarr.app.listview1"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk android:minSdkVersion="7" />

<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".ListViewInActivity"
android:label="@string/app_name" >
</activity>
<activity
android:name="com.bravestarr.app.listview1.ListViewInListActivity"
android:label="@string/app_name" >
</activity>
</application>

</manifest>

2>main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/btn1"
android:id="@+id/btn1"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/btn2"
android:id="@+id/btn2"
/>
</LinearLayout>

3>activity.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/listview_in_activity" />
<ListView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/listview"
/>
</LinearLayout>

4>listactivity.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/listview_in_listactivity" />
<ListView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/android:list"
/>
</LinearLayout>

5>mylist_item.xml

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

6>strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="btn1">继承自Activity的listview使用</string>
<string name="btn2">继承自ListActivity的listview使用</string>
<string name="listview_in_activity">说明:Activity中使用Listview\nxml布局中,ListView标签id可以任意取值,\n程序中通过findViewById找到该Listview对象,\n然后通过listView.setAdapter(adapter);  绑定设置adapter绑定数据</string>
<string name="listview_in_listactivity">说明:ListActivity中使用Listview\nxml布局中,ListView标签id必须写成android:id="@+id/android:list",\n程序中通过getListView()找到该Listview对象,\n然后通过setListAdapter(adapter);设置adapter绑定数据,无需得到listview</string>
<string name="app_name">ListView的使用</string>
</resources>

7>MainActivity.java

package com.bravestarr.app.listview1;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

/**
* @Author    BraveStarr
* @QQ        1733259520
* @Blog    http://www.cnblogs.com/bravestarrhu/,http://blog.sina.com.cn/wanghubravestarr
*
*/
public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button btn1,btn2;
btn1 = (Button)findViewById(R.id.btn1);
btn2 = (Button)findViewById(R.id.btn2);
btn1.setOnClickListener(l);

btn2.setOnClickListener(l);
}

private View.OnClickListener l = new View.OnClickListener() {
Intent i;
@Override
public void onClick(View v) {
switch(v.getId()){
case R.id.btn1:
i = new Intent(MainActivity.this,ListViewInActivity.class);
startActivity(i);
break;
case R.id.btn2:
i = new Intent(MainActivity.this,ListViewInListActivity.class);
startActivity(i);
break;
}
}
};
}

8>ListViewInActivity.java

package com.bravestarr.app.listview1;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class ListViewInActivity extends Activity {
private static final String[] names = new String[]{"斗破苍穹","网游之终极牧师","琴帝"};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity);
ListView lv = (ListView)findViewById(R.id.listview);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.mylist_item, names);
lv.setAdapter(adapter);
}
}

9>ListViewInListActivity.java

package com.bravestarr.app.listview1;

import android.app.ListActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;

/**
* @Author    BraveStarr
* @QQ        1733259520
* @Blog    http://www.cnblogs.com/bravestarrhu/,http://blog.sina.com.cn/wanghubravestarr
*
*/
public class ListViewInListActivity extends ListActivity {
private static final String[] names = new String[]{"斗破苍穹","网游之终极牧师","琴帝"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listactivity);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.mylist_item, names);
setListAdapter(adapter);
}

}