Android ExpandableListView的簡單應用

Expandablelistview1Activity.java

 

package com.wangzhu.demoexpandablelistview;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ExpandableListView;
import android.widget.SimpleExpandableListAdapter;

public class Expandablelistview1Activity extends Activity {

    private ExpandableListView expandableListView1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.expandablelistview1);

        init();
    }

    private void init() {
        expandableListView1 = (ExpandableListView) findViewById(R.id.expandableListView1);
        getDatas();
    }

    private void getDatas() {
        // 建立兩個一級條目標題
        Map<String, String> title_1 = new HashMap<String, String>();
        title_1.put("group", "移動開發");
        Map<String, String> title_2 = new HashMap<String, String>();
        title_2.put("group", "男人的需求");

        // 建立一級條目容器
        List<Map<String, String>> groups = new ArrayList<Map<String, String>>();
        groups.add(title_1);
        groups.add(title_2);

        // 建立二級條目內容

        // 內容一
        Map<String, String> content_1 = new HashMap<String, String>();
        content_1.put("child", "Android");
        Map<String, String> content_2 = new HashMap<String, String>();
        content_2.put("child", "Ios");

        List<Map<String, String>> childs_1 = new ArrayList<Map<String, String>>();
        childs_1.add(content_1);
        childs_1.add(content_2);

        // 內容二
        Map<String, String> content_3 = new HashMap<String, String>();
        content_3.put("child", "金錢");
        Map<String, String> content_4 = new HashMap<String, String>();
        content_4.put("child", "權利");
        Map<String, String> content_5 = new HashMap<String, String>();
        content_5.put("child", "女人");

        List<Map<String, String>> childs_2 = new ArrayList<Map<String, String>>();
        childs_2.add(content_3);
        childs_2.add(content_4);
        childs_2.add(content_5);

        // 存放兩個內容，以便顯示在列表中
        List<List<Map<String, String>>> childs = new ArrayList<List<Map<String, String>>>();
        childs.add(childs_1);
        childs.add(childs_2);

        /**
         * 引數1：上下文物件context 引數2：一級條目目錄集合 引數3：一級條目對應的佈局檔案
         * 引數4：fromto，就是map中的key，指定要顯示的物件 引數5：與引數4對應，指定要顯示在groups中的id
         * 引數6：二級條目目錄集合 引數7：二級條目對應的佈局檔案 引數8：fromto，就是map中的key，指定要顯示的物件
         * 引數9：與引數8對應，指定要顯示在childs中的id
         */
        SimpleExpandableListAdapter adapter = new SimpleExpandableListAdapter(
                this, groups, R.layout.expandablelistview1_groups,
                new String[] { "group" }, new int[] { R.id.textGroup }, childs,
                R.layout.expandablelistview1_child, new String[] { "child" },
                new int[] { R.id.textChild });
        expandableListView1.setAdapter(adapter);
    }

}

 

expandablelistview1.xml

<?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="match_parent"
    android:orientation="vertical" >

    <ExpandableListView
        android:id="@+id/expandableListView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </ExpandableListView>

</LinearLayout>

 

expandablelistview1_groups.xml

 

<?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="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textGroup"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:paddingBottom="6dp"
        android:paddingLeft="40dp"
        android:paddingTop="6dp"
        android:text="No data"
        android:textSize="15sp" />

</LinearLayout>

 

 

expandablelistview1_child.xml

<?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="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textChild"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:paddingBottom="10dp"
        android:paddingLeft="40dp"
        android:paddingTop="10dp"
        android:text="No data"
        android:textSize="20sp" />

</LinearLayout>

 

備註：

簡單的應用，網上匯出都可見，理論就不寫了，直接原始碼吧！