ExpandableListView inside a scrollview

Question

In my app i want to make a page that have ExpandableListView and below him CheckBox.

My problem is that my ExpandableListView is too big and make the CheckBox out of the page.

On smaller screens is not visible at all.

I tried to put ExpandableListView inside scrollview but its not working.

Is there a way to make my design?

Here is my code and a screenshot.

XML code:

<?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="match_parent"
    android:background="@color/White" >

    <ScrollView
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:fillViewport="true" >

        <RelativeLayout
            android:layout_width="fill_parent"
            android:layout_height="fill_parent" >

            <TextView
                android:id="@+id/textView1"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_alignParentTop="true"
                android:layout_marginTop="15sp"
                android:text="In this page you can save a group of exercise under one routine."
                android:textColor="@color/Black"
                android:textSize="20sp" />

            <ExpandableListView
                android:id="@+id/instructionsExView"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_alignParentLeft="true"
                android:layout_below="@+id/textView1"
                android:layout_marginTop="15sp" >
            </ExpandableListView>

            <TextView
                android:id="@+id/textView2"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_below="@+id/instructionsExView"
                android:layout_marginTop="15sp"
                android:text="If you want to open the instruction again check &apos;need help?&apos;"
                android:textColor="@color/Black"
                android:textSize="20sp" />

            <CheckBox
                android:id="@+id/checkInstructions"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentLeft="true"
                android:layout_below="@+id/textView2"
                android:layout_marginTop="16dp"
                android:checked="false"
                android:text="dont show again when opening the page"
                android:textColor="@color/Black" />

        </RelativeLayout>
    </ScrollView>

</RelativeLayout>

Screen shot:

EDIT:

Answer 1

in your "onCreate" method write: "setListViewHeight(expListView)" after "expListView.setAdapter(listAdapter)" then set OnGroupClickListener for your expandable list view as below:

expListView.setOnGroupClickListener(new OnGroupClickListener() {

        @Override
        public boolean onGroupClick(ExpandableListView parent, View v,
                int groupPosition, long id) {
            setListViewHeight(parent, groupPosition);
            return false;
        }
    });

used methods:

private void setListViewHeight(ListView listView) {
    ListAdapter listAdapter = listView.getAdapter();
    int totalHeight = 0;
    for (int i = 0; i < listAdapter.getCount(); i++) {
    View listItem = listAdapter.getView(i, null, listView);
    listItem.measure(0, 0);
    totalHeight += listItem.getMeasuredHeight();
    }

    ViewGroup.LayoutParams params = listView.getLayoutParams();
    params.height = totalHeight
    + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
    listView.setLayoutParams(params);
    listView.requestLayout();
    }


    private void setListViewHeight(ExpandableListView listView,
    int group) {
    ExpandableListAdapter listAdapter = (ExpandableListAdapter) listView.getExpandableListAdapter();
    int totalHeight = 0;
    int desiredWidth = MeasureSpec.makeMeasureSpec(listView.getWidth(),
    MeasureSpec.EXACTLY);
    for (int i = 0; i < listAdapter.getGroupCount(); i++) {
    View groupItem = listAdapter.getGroupView(i, false, null, listView);
    groupItem.measure(desiredWidth, MeasureSpec.UNSPECIFIED);

    totalHeight += groupItem.getMeasuredHeight();

    if (((listView.isGroupExpanded(i)) && (i != group))
    || ((!listView.isGroupExpanded(i)) && (i == group))) {
    for (int j = 0; j < listAdapter.getChildrenCount(i); j++) {
    View listItem = listAdapter.getChildView(i, j, false, null,
    listView);
    listItem.measure(desiredWidth, MeasureSpec.UNSPECIFIED);

    totalHeight += listItem.getMeasuredHeight();

    }
    }
    }

    ViewGroup.LayoutParams params = listView.getLayoutParams();
    int height = totalHeight
    + (listView.getDividerHeight() * (listAdapter.getGroupCount() - 1));
    if (height < 10)
    height = 200;
    params.height = height;
    listView.setLayoutParams(params);
    listView.requestLayout();

    }

now u are good to go.

Answer 2

Based on @Dmila Ram`s answer, I was able to do it.

In my case, I initialize and populate the ExpandableListView in the onCreate method like so:

expandableListView = (ExpandableListView) findViewById(R.id.appsMenu);
listAdapter = new ExpandableListAdapter(this, listDataHeader, listDataChild);
expandableListView.setAdapter(listAdapter);
for (int i = 0; i < listAdapter.getGroupCount(); i++)
     expandableListView.expandGroup(i);
setListViewHeight(expandableListView);
expandableListView.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
     @Override
     public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) {
          setListViewHeight(parent, groupPosition);
          return false;
        }
     });

Notice that I expand each group. After that I call setListViewHeight(expandableListView);

This method is responsible for calculating the height of the ExpandableListView when it is created for first time.

Here is the code:

private void setListViewHeight(ExpandableListView listView) {
        ExpandableListAdapter listAdapter = (ExpandableListAdapter) listView.getExpandableListAdapter();
        int totalHeight = 0;
        for (int i = 0; i < listAdapter.getGroupCount(); i++) {
            View groupView = listAdapter.getGroupView(i, true, null, listView);
            groupView.measure(0, View.MeasureSpec.UNSPECIFIED);
            totalHeight += groupView.getMeasuredHeight();

        if (listView.isGroupExpanded(i)){
            for(int j = 0; j < listAdapter.getChildrenCount(i); j++){
                View listItem = listAdapter.getChildView(i, j, false, null, listView);
                listItem.measure(0, View.MeasureSpec.UNSPECIFIED);
                totalHeight += listItem.getMeasuredHeight();
            }
        }
    }

    ViewGroup.LayoutParams params = listView.getLayoutParams();
    params.height = totalHeight
            + (listView.getDividerHeight() * (listAdapter.getGroupCount() - 1));
    listView.setLayoutParams(params);
    listView.requestLayout();
}

It's really not necessary to have the groups expanded, instead we can just loop through the child items and add them to the calculation of the total height.

This will make all widgets in the ScrollView scrollable and it will also show the ExpandableListView properly.

Then we also need this method, to make sure that clicking on the groups will calculate the height as well:

private void setListViewHeight(ExpandableListView listView,
                                   int group) {
        ExpandableListAdapter listAdapter = (ExpandableListAdapter) listView.getExpandableListAdapter();
        int totalHeight = 0;
        int desiredWidth = View.MeasureSpec.makeMeasureSpec(listView.getWidth(),
                View.MeasureSpec.EXACTLY);
        for (int i = 0; i < listAdapter.getGroupCount(); i++) {
            View groupItem = listAdapter.getGroupView(i, false, null, listView);
        groupItem.measure(desiredWidth, View.MeasureSpec.UNSPECIFIED);
        totalHeight += groupItem.getMeasuredHeight();

        if (((listView.isGroupExpanded(i)) && (i != group))
                || ((!listView.isGroupExpanded(i)) && (i == group))) {
            for (int j = 0; j < listAdapter.getChildrenCount(i); j++) {
                View listItem = listAdapter.getChildView(i, j, false, null,
                        listView);
                listItem.measure(desiredWidth, View.MeasureSpec.UNSPECIFIED);
                totalHeight += listItem.getMeasuredHeight();
            }
        }
    }

    ViewGroup.LayoutParams params = listView.getLayoutParams();
    int height = totalHeight
            + (listView.getDividerHeight() * (listAdapter.getGroupCount() - 1));
    if (height < 10)
        height = 200;
    params.height = height;
    listView.setLayoutParams(params);
    listView.requestLayout();
}

That's pretty much it, then it works fine, but this solution can be optimized even further.