本篇文章為大家展示了使用ExpandableListView怎么實(shí)現(xiàn)一個(gè)二級(jí)列表,內(nèi)容簡(jiǎn)明扼要并且容易理解,絕對(duì)能使你眼前一亮,通過這篇文章的詳細(xì)介紹希望你能有所收獲。
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<RelativeLayout 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" tools:context="${relativePackage}.${activityClass}" > <ExpandableListView android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/expandableListView"> </ExpandableListView> </RelativeLayout>
ExpandableListView的一級(jí)列表布局
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="80dp" android:orientation="vertical" > <TextView android:id="@+id/one_name" android:layout_width="wrap_content" android:layout_height="40dp" android:layout_centerInParent="true" android:textSize="20sp" android:text="我是一級(jí)列表"/> </RelativeLayout>
ExpandableListView的二級(jí)列表布局
<?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="60dp" android:orientation="horizontal" > <ImageView android:id="@+id/img" android:layout_width="60dp" android:layout_height="60dp" android:src="@drawable/ic_launcher"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/tow_name" android:layout_marginTop="20dp" android:layout_marginLeft="20dp" android:text="嘻嘻哈哈"/> </LinearLayout>
Java代碼
package com.example.expandablelistview; import java.util.ArrayList; import java.util.List; import android.R.string; import android.app.Activity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.BaseExpandableListAdapter; import android.widget.ExpandableListView; import android.widget.TextView; public class MainActivity extends Activity { private MainActivity.Madapder madapder; private ExpandableListView expandableListView; private List<String> allList; private List<List<Person>> list; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //獲取控件 expandableListView=(ExpandableListView) findViewById(R.id.expandableListView); //初始化數(shù)據(jù) initData(); //自定義適配器 madapder=new Madapder(); expandableListView.setAdapter(madapder); } public void initData() { allList=new ArrayList<String>(); allList.add("列表①"); allList.add("列表②"); allList.add("列表③"); list=new ArrayList<List<Person>>(); List<Person> list1=new ArrayList<Person>(); list1.add(new Person(" 虞姬")); list1.add(new Person(" 甄姬")); list1.add(new Person(" 阿貍")); list1.add(new Person(" 狐貍")); List<Person> list2=new ArrayList<Person>(); list2.add(new Person(" 李白")); list2.add(new Person(" 項(xiàng)羽")); list2.add(new Person(" 荊軻")); list2.add(new Person(" 曹操")); List<Person> list3=new ArrayList<Person>(); list3.add(new Person(" 公孫離")); list3.add(new Person(" 孫尚香")); list3.add(new Person(" 狄仁杰")); list3.add(new Person(" 蔡文姬")); list.add(list1); list.add(list2); list.add(list3); } class Madapder extends BaseExpandableListAdapter{ @Override public int getGroupCount() { // TODO Auto-generated method stub return allList.size(); } @Override public int getChildrenCount(int groupPosition) { // TODO Auto-generated method stub return list.get(groupPosition).size(); } @Override public Object getGroup(int groupPosition) { // TODO Auto-generated method stub return allList.get(groupPosition); } @Override public Object getChild(int groupPosition, int childPosition) { // TODO Auto-generated method stub return list.get(groupPosition).get(childPosition); } @Override public long getGroupId(int groupPosition) { // TODO Auto-generated method stub return groupPosition; } @Override public long getChildId(int groupPosition, int childPosition) { // TODO Auto-generated method stub return childPosition; } @Override public boolean hasStableIds() { // TODO Auto-generated method stub return true; } @Override public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) { GroupView groupView; if(convertView==null){ groupView=new GroupView(); //獲取一級(jí)列表的布局 convertView=View.inflate(MainActivity.this,R.layout.item_1, null); //復(fù)用控件 groupView.name=(TextView) convertView.findViewById(R.id.one_name); //綁定 convertView.setTag(groupView); }else { groupView = (GroupView) convertView.getTag(); } //給控件設(shè)置值 groupView.name.setText(allList.get(groupPosition)); return convertView; } @Override public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) { ViewHolder Holder; if(convertView==null){ Holder=new ViewHolder(); //獲取二級(jí)列表的布局 convertView=View.inflate(MainActivity.this,R.layout.item_2, null); //復(fù)用控件 Holder.text_name=(TextView) convertView.findViewById(R.id.tow_name); //綁定 convertView.setTag(Holder); }else { Holder = (ViewHolder) convertView.getTag(); } //給控件設(shè)置值 Holder.text_name.setText(list.get(groupPosition).get(childPosition).getName()); return convertView; } @Override public boolean isChildSelectable(int groupPosition, int childPosition) { // TODO Auto-generated method stub return true; } } class ViewHolder{ TextView text_name; } class GroupView{ TextView name; } }
Java_封裝類
package com.example.expandablelistview; public class Person { String name; public Person() { // TODO Auto-generated constructor stub } public Person(String name) { super(); this.name = name; } public String getName() { return name; } public void setName(String name) { this.name = name; } @Override public String toString() { return "Person [name=" + name + "]"; } }
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