Android列表视图ListView和ListActivity-android学习之旅（二十四）

ListView简介

ListView是android中常用的一种控件，创建ListView有两种方式：

1.在xml中使用ListView控件创建。

2.使用activity继承ListActivity，然后使用setListAdapter()创建，如果需要在xml中创建，需要android：id = @id：android：list

Listview和GridView和Spinner和Gallery等Adapterview都是容器，用adapter来提供数据，而adapterView负责数据的显示形式。

AdapterView属性讲解

AbsListView的属性：

ListView提供的属性

在xml设置ListView实例

<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:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context=".MainActivity"
android:orientation="vertical">
<ListView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:entries="@array/books"
android:divider="#f00"
android:dividerHeight="2px"
android:headerDividersEnabled="false"
/>
</LinearLayout>

<?xml version="1.0" encoding="UTF-8"?>
<resources>
<string-array name="books">
<item>hello</item>
<item>world</item>
<item>liu</item>
<item>peng</item>
</string-array>
</resources>

使用ArrayAdapter创建ListView

package peng.liu.testview;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.os.SystemClock;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.Chronometer;
import android.widget.ImageView;
import android.widget.ListView;

public class MainActivity extends Activity{
private String attrs[] = {"hello","world","liu","peng'"};
private String names[] = {"java","c","python"};
private ListView list1,list2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
list1 = (ListView) findViewById(R.id.list1);
list2 = (ListView) findViewById(R.id.list2);
ArrayAdapter<String> array1 = new ArrayAdapter(this,android.R.layout.simple_list_item_1,attrs);
ArrayAdapter<String> array2 = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,names);
list1.setAdapter(array1);
list2.setAdapter(array2);
}
}

<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:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context=".MainActivity"
android:orientation="vertical">
<ListView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/list1"
android:dividerHeight="2px"
android:divider="#f00"
android:headerDividersEnabled="false"
/>
<ListView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/list2"
android:dividerHeight="2px"
android:divider="#f00"
android:headerDividersEnabled="false"
/>
</LinearLayout>

基于ListActivity创建

package peng.liu.testview;

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

public class MainActivity extends ListActivity {
private String attrs[] = {"hello","world","liu","peng'"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ArrayAdapter<String> array1 = new ArrayAdapter(this,android.R.layout.simple_list_item_1,attrs);
setListAdapter(array1);
}

}