How to extend the ListView height dynamically android?

Question

To increase the listview height, I am using exbandable ListView as,

public class ExpandableListView extends ListView {

    private android.view.ViewGroup.LayoutParams params;
    private int old_count = 0;

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

    @Override
    protected void onDraw(Canvas canvas) {
        if (getCount() != old_count) {
            old_count = getCount();
            params = getLayoutParams();
            params.height = getCount() * (old_count > 0 ? getChildAt(0).getHeight() : 0);
            System.out.println("params h "+params.height+" "+params);
            setLayoutParams(params);
        }

        super.onDraw(canvas);
    }

}

layout.xml as,

<com.jems.realtimedata.ExpandableListView
                android:id="@+id/listView1"
                android:layout_width="match_parent"
                android:layout_height="match_parent"      
                android:layout_marginLeft="10dp"
                android:layout_marginRight="10dp"
                android:layout_marginTop="25dp"
                android:background="@color/list_back"
                android:cacheColorHint="#00000000"
                android:divider="@drawable/line"
                android:paddingLeft="7dp"
                android:paddingRight="7dp"
                android:paddingTop="10dp"
                android:scrollbars="none" />

But,last item of list not displaying properly. I used utility class also,but no change in list.Any other solution to extend the view.Please help me to solve this issues.

Does this answer your question? [How to change ListView height dynamically in Android?](https://stackoverflow.com/questions/6071131/how-to-change-listview-height-dynamically-in-android) — Amir Dora., Oct 05 '20 at 10:57

Teddy · Answer 1 · 2013-11-22T07:47:01.883

2

change line

params.height = getCount() * (old_count > 0 ? getChildAt(0).getHeight() : 0);

to this:

params.height = getCount() * (old_count > 0 ? getChildAt(0).getHeight() + 1 : 0);

this only works for a list with single-line items.

edited Nov 22 '13 at 07:47

answered Nov 21 '13 at 08:32

Teddy

92
7

score 1 · Accepted Answer · edited May 23 '17 at 12:06

1

This question is already posted.So have a look at this, and you can customize it according to your need in Expandable list

This link will help you:

How to change ListView height dynamically in Android?

edited May 23 '17 at 12:06

Community

1
1

answered Sep 28 '12 at 06:18

Agnihotri.

426
3
12

How to extend the ListView height dynamically android?

2 Answers2