ExpandableListView的使用

效果图

布局

<ExpandableListView

    android:id="@+id/expandableListView"

    android:layout_width="match_parent"

    android:layout_height="match_parent" />

初始化

ExpandableListView expandableListView = (ExpandableListView) findViewById(R.id.expandableListView);

填充数据

KongqwExpandableListviewAdapter kongqwExpandableListviewAdapter = new KongqwExpandableListviewAdapter(this);

expandableListView.setAdapter(kongqwExpandableListviewAdapter);

Adapter

package com.example.kongqw.myapplication;

import android.content.Context;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseExpandableListAdapter;

import android.widget.TextView;

import java.util.ArrayList;

/**

 * Created by kongqw on 2015/12/21.

 */

public class KongqwExpandableListviewAdapter extends BaseExpandableListAdapter {

    private Context mContext;

    private ArrayList<String> mGroups;

    private ArrayList<String> mChilds;

    // 构造方法

    public KongqwExpandableListviewAdapter(Context context) {

        mContext = context;

        // 模拟初始化数据

        mGroups = new ArrayList<String>();

        mGroups.add("Group 1");

        mGroups.add("Group 2");

        mGroups.add("Group 3");

        mGroups.add("Group 4");

        mGroups.add("Group 5");

        mChilds = new ArrayList<String>();

        mChilds.add("Child 1");

        mChilds.add("Child 2");

        mChilds.add("Child 3");

        mChilds.add("Child 4");

        mChilds.add("Child 5");

        mChilds.add("Child 6");

        mChilds.add("Child 7");

        mChilds.add("Child 8");

        mChilds.add("Child 9");

        mChilds.add("Child 10");

    }

    @Override

    public int getGroupCount() {

        return mGroups.size();

    }

    @Override

    public int getChildrenCount(int groupPosition) {

        return mChilds.size();

    }

    @Override

    public Object getGroup(int groupPosition) {

        return mGroups.get(groupPosition);

    }

    @Override

    public Object getChild(int groupPosition, int childPosition) {

        return mChilds.get(childPosition);

    }

    @Override

    public long getGroupId(int groupPosition) {

        return groupPosition;

    }

    @Override

    public long getChildId(int groupPosition, int childPosition) {

        return childPosition;

    }

    @Override

    public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {

        View view = View.inflate(mContext, R.layout.expandable_group_item, null);

        TextView textView = (TextView) view.findViewById(R.id.group_item);

        textView.setText(mGroups.get(groupPosition));

        return view;

    }

    @Override

    public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {

        View view = View.inflate(mContext, R.layout.expandable_child_item, null);

        TextView textView = (TextView) view.findViewById(R.id.child_item);

        textView.setText(mChilds.get(childPosition));

        return view;

    }

    @Override

    public boolean hasStableIds() {

        return true;

    }

    @Override

    public boolean isChildSelectable(int groupPosition, int childPosition) {

        return true;

    }

}

去掉箭头

expandableListView.setGroupIndicator(null);

默认展开

// 设置ExpandableListView默认是展开的

for (int i = 0; i < kongqwExpandableListviewAdapter.getGroupCount(); i++) {

    expandableListView.expandGroup(i);

}

Group不可点击

expandableListView.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {

    @Override

    public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) {

        // TODO Auto-generated method stub

        return true;

    }

});

TODO 复用