ExpandableListView的使用

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ExpandableListView的使用

效果图

这里写图片描述

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

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