创建ListView的基本步骤

时间:2023-03-09 05:42:19
创建ListView的基本步骤

参考《疯狂android讲义》第2.5节P94

1、创建一个或者多个ListView

<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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:orientation="vertical"
tools:context=".MainActivity" > <ListView
android:id="@+id/list1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:divider="#f00"
android:dividerHeight="2dp"
android:headerDividersEnabled="false" /> <ListView
android:id="@+id/list2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:divider="#0f0"
android:dividerHeight="2dp"
android:headerDividersEnabled="true" />
</LinearLayout>

2、创建TextViewResource,为每个元素定义其显示属性

array_item1.xml

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/tv_item1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:textSize="20sp"
android:padding="10dp"
android:shadowColor="#0f0"
android:shadowDx="4"
android:shadowDy="4"
android:shadowRadius="2">
</TextView>

array_item2.xml

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/tv_item2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:textSize="20sp"
android:padding="10dp"
android:shadowColor="#ff0"
android:shadowDx="4"
android:shadowDy="4"
android:shadowRadius="2">
</TextView>

3、创建Activity,并完成以下三个步骤

package com.ljh.listviewdemo;

import android.os.Bundle;
import android.app.Activity;
import android.widget.ArrayAdapter;
import android.widget.ListView; public class MainActivity extends Activity { @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); //3、定义每个元素的内容
String[] arr1 = new String[]{"孙悟空","猪八戒","沙僧","唐僧"}; //4、将元素属性及元素内容包装为ArrayAdapter
ArrayAdapter<String> adapter1 = new ArrayAdapter<String>(this, R.layout.array_item1, arr1); //5、为ListView设置Adapter
ListView list1 = (ListView) findViewById(R.id.list1);
list1.setAdapter(adapter1); //3、定义每个元素的内容
String[] arr2 = new String[]{"Java","C++","Python","PHP"}; //4、将元素属性及元素内容包装为ArrayAdapter
ArrayAdapter<String> adapter2 = new ArrayAdapter<String>(this, R.layout.array_item2, arr2); //5、为ListView设置Adapter
ListView list2= (ListView) findViewById(R.id.list2);
list2.setAdapter(adapter2);
} }