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

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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：
这里写图片描述

ListView提供的属性

这里写图片描述

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);    }}

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