java - 如何在不折叠的情况下将 ExpandableListView 放入 ScrollView？

Question

我想将 ScrollView 内的 ExpandableListView 与其他 View 一起使用，但我遇到了 ExpandableListView 中的自滚动条问题，我试图禁用它，但问题在于 ExpandableListView 的高度及其内部布局。所以我想

• 禁用 ExpandableListView 滚动
• 在单击 groupView 时调整包含的 ExpandableListView 和 LinearLayout 的大小

我用谷歌搜索了一个解决方案，我找到了一个仅适用于 ListView 的解决方案

Listview in ScrollView

我想进行相同的锻炼，但使用 ExpandableListView(使用自定义适配器)。

这是我的代码:主 Activity .java

package fablabegypt.android.expandablelistview2;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ExpandableListView;
import android.widget.LinearLayout;

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


public class MainActivity extends ActionBarActivity {

    mListAdapter listAdapter;
    ExpandableListView expListView;
    LinearLayout linearLayout;
    List<String> listDataHeader;
    HashMap<String, List<String>> listDataChild;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        linearLayout = (LinearLayout) findViewById(R.id.linear_holder);

        prepareListData();
        expListView = (ExpandableListView) findViewById(R.id.expand_list);
    //expListView.setScrollContainer(false);
    expListView.setHorizontalScrollBarEnabled(false);
    expListView.setVerticalScrollBarEnabled(false);
    expListView.setFastScrollEnabled(false);
    expListView.setSmoothScrollbarEnabled(false);
    //expListView.setOverscrollHeader(null);
    expListView.setFooterDividersEnabled(false);
    //expListView.setOverscrollFooter(null);
    //expListView.setVerticalFadingEdgeEnabled(false);
    //expListView.setHorizontalFadingEdgeEnabled(false);
    expListView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
        @Override
        public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {
            return true;
        }
    });
    expListView.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
        @Override
        public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) {
            if (parent.isGroupExpanded(groupPosition)) {
                parent.collapseGroup(groupPosition);
            } else {
                parent.expandGroup(groupPosition);
            }
            //telling the listView we have handled the group click, and don't want the default actions.
            return true;
        }
    });
    expListView.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            if (event.getAction() == MotionEvent.ACTION_UP) {
                return false;
            }else {

            }
            return true;
        }
    });
    listAdapter = new mListAdapter(this, listDataHeader,listDataChild);
    expListView.setAdapter(listAdapter);
}
private void prepareListData() {
    listDataHeader = new ArrayList<String>();
    listDataChild = new HashMap<String, List<String>>();

    // Adding child data
    listDataHeader.add("Top 250");
    listDataHeader.add("Now Showing");
    listDataHeader.add("Coming Soon..");

    // Adding child data
    List<String> top250 = new ArrayList<String>();
    top250.add("The Shawshank Redemption");
    top250.add("The Godfather");
    top250.add("The Godfather: Part II");
    top250.add("Pulp Fiction");
    top250.add("The Good, the Bad and the Ugly");
    top250.add("The Dark Knight");
    top250.add("12 Angry Men");

    List<String> nowShowing = new ArrayList<String>();
    nowShowing.add("The Conjuring");
    nowShowing.add("Despicable Me 2");
    nowShowing.add("Turbo");
    nowShowing.add("Grown Ups 2");
    nowShowing.add("Red 2");
    nowShowing.add("The Wolverine");

    List<String> comingSoon = new ArrayList<String>();
    comingSoon.add("2 Guns");
    comingSoon.add("The Smurfs 2");
    comingSoon.add("The Spectacular Now");
    comingSoon.add("The Canyons");
    comingSoon.add("Europa Report");

    listDataChild.put(listDataHeader.get(0), top250); // Header, Child data
    listDataChild.put(listDataHeader.get(1), nowShowing);
    listDataChild.put(listDataHeader.get(2), comingSoon);
}



@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        finish();
        return true;
    }

        return super.onOptionsItemSelected(item);
    }
}

mListAdapter.java

package fablabegypt.android.expandablelistview2;

import android.content.Context;
import android.database.DataSetObserver;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListAdapter;
import android.widget.TextView;

import java.util.HashMap;
import java.util.List;

/**
 * Created by Mouso on 4/27/2015.
 */
public class mListAdapter extends BaseExpandableListAdapter {

    private Context context;
    private List<String> header_list;
    private HashMap<String, List<String>> children_data_list;

    public mListAdapter(Context context,List<String> header_list,HashMap<String,List<String>> children_data_list){
        this.context = context;
        this.header_list = header_list;
        this.children_data_list = children_data_list;
    }

    @Override
    public void registerDataSetObserver(DataSetObserver observer) {

    }

    @Override
    public void unregisterDataSetObserver(DataSetObserver observer) {

    }

    @Override
    public int getGroupCount() {
        return this.children_data_list.size();
    }

    @Override
    public int getChildrenCount(int groupPosition) {
        return this.children_data_list.get(this.header_list.get(groupPosition)).size();
    }

    @Override
    public Object getGroup(int groupPosition) {
        return this.header_list.get(groupPosition);
    }

    @Override
    public Object getChild(int groupPosition, int childPosition) {
        return this.children_data_list.get(this.header_list.get(groupPosition)).get(childPosition);
    }

    @Override
    public long getGroupId(int groupPosition) {
        return groupPosition;
    }

    @Override
    public long getChildId(int groupPosition, int childPosition) {
        return childPosition;
    }

    @Override
    public boolean hasStableIds() {
        return false;
    }

    @Override
    public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
        final String headerText = (String) getGroup(groupPosition);
        if (convertView == null){
            LayoutInflater layoutInflater = (LayoutInflater) this.context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = layoutInflater.inflate(R.layout.list_group,null);
        }

        TextView headerTxt = (TextView) convertView.findViewById(R.id.list_group_txt);
        headerTxt.setTextSize(20);
        headerTxt.setText(headerText);
        //Log.d("Mouso",headerText);

        return convertView;
    }

    @Override
    public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
        final String childText = (String) getChild(groupPosition,childPosition);

        if (convertView == null){
            LayoutInflater layoutInflater = (LayoutInflater) this.context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = layoutInflater.inflate(R.layout.list_item,null);
        }

        TextView childTxt = (TextView) convertView.findViewById(R.id.list_child_txt);
        childTxt.setText(childText);

        return convertView;
    }

    @Override
    public boolean isChildSelectable(int groupPosition, int childPosition) {
        return false;
    }

    @Override
    public boolean areAllItemsEnabled() {
        return true;
    }

    @Override
    public boolean isEmpty() {
        if (header_list.size() > 0)
            return true;
        return false;
    }

    @Override
    public void onGroupExpanded(int groupPosition) {

    }

    @Override
    public void onGroupCollapsed(int groupPosition) {

    }

    @Override
    public long getCombinedChildId(long groupId, long childId) {
        return (groupId*100)+childId;
    }

    @Override
    public long getCombinedGroupId(long groupId) {
        return groupId;
    }

}

activity_main.xml

<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" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">

    <ScrollView
        android:layout_width="wrap_content"
        android:layout_height="500px"
        android:fillViewport="true">
    <LinearLayout
        android:id="@+id/linear_holder"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <TextView
            android:id="@+id/txt"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="we 7yat 3neak we fadaha 3neya \n\n\n dana ba7ebak ad 3naya"/>

        <ExpandableListView
            android:id="@+id/expand_list"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:isScrollContainer="false">

        </ExpandableListView>
    </LinearLayout>
    </ScrollView>

</RelativeLayout>

list_group.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/list_group_txt"
        android:paddingLeft="?android:attr/expandableListPreferredItemPaddingLeft"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" />


</LinearLayout>

list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/list_child_txt"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" />

</LinearLayout>

我实现锻炼的尝试

Helper.java

package fablabegypt.android.expandablelistview2;

import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.ListAdapter;
import android.widget.ListView;

/**
 * Created by Mouso on 4/29/2015.
 */
public class ListViewHelper {
    public static void getListViewSize(ExpandableListView myListView) {
        ListAdapter myListAdapter = myListView.getAdapter();

        if (myListAdapter == null) {
            //do nothing return null
            return;
        }
        //set listAdapter in loop for getting final size
        int totalHeight = 0;
        for (int groupSize = 0; groupSize < myListAdapter.getGroupCount(); groupSize++) {
            View listItem = myListAdapter.getGroupView(groupSize, false, null, myListView);
            listItem.measure(0, 0);
            totalHeight += listItem.getMeasuredHeight();
            for (int size = 0; size < myListAdapter.getChildrenCount(groupSize); size++) {
                if (size == myListAdapter.getChildrenCount(groupSize)-1)
                    listItem = myListAdapter.getChildView(groupSize, size, true, null, myListView);
                listItem = myListAdapter.getChildView(groupSize, size, false, null, myListView);
                listItem.measure(0, 0);
                totalHeight += listItem.getMeasuredHeight();
            }
        }
        //setting listview item in adapter
        ViewGroup.LayoutParams params = myListView.getLayoutParams();
        params.height = totalHeight + (myListView.getDividerHeight() * (myListAdapter.getGroupCount() - 1));
        myListView.setLayoutParams(params);
        // print height of adapter on log
        Log.d("mouso", "height of listItem:"+String.valueOf(totalHeight));
    }

    //Read more: http://www.androidhub4you.com/2012/12/listview-into-scrollview-in-android.html#ixzz3Yh4m4MPG

}

Answer 1

扩展ExpandableListView类并设置expand为false

    public class CustomExpandableListView extends ExpandableListView {

    boolean expanded = false;

    public CustomExpandableListView (Context context) {
        super(context);
    }

    public CustomExpandableListView (Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public CustomExpandableListView (Context context, AttributeSet attrs,int defStyle) {                          
        super(context, attrs, defStyle);
    }

    public boolean isExpanded() {
        return expanded;
    }

    @Override
    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

        if (isExpanded()) {
            int expandSpec = MeasureSpec.makeMeasureSpec(
                    Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
            super.onMeasure(widthMeasureSpec, expandSpec);
            ViewGroup.LayoutParams params = getLayoutParams();
            params.height = getMeasuredHeight();
        } else {
            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        }
    }

    public void setExpanded(boolean expanded) {
        this.expanded = expanded;
    }
}

在你的 Activity 课上

CustomExpandableListView customExpandableListView = (CustomExpandableListView ) findViewById(R.id.expandable_list);
customExpandableListView .setExpanded(true);

布局文件

 <com.xxx.xxx.util.ExpandableHeightListView
                    android:id="@+id/expandable_list"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    />

现在它将在 ScrollView 中工作