Set ListView height to display all available items

Question

I have a ListView inside a ScrollView.

How can I set the height of the ListView so that all the items in its adapter fit in it and it does not need to scroll.

Answer 1

If you want a list of items that doesn't scroll, it's called a linearlayout.

Else if you want you can custom listview as:

public class NonScrollListView extends ListView {

    public NonScrollListView(Context context) {
        super(context);
    }
    public NonScrollListView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }
    public NonScrollListView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }
    @Override
    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
            int heightMeasureSpec_custom = MeasureSpec.makeMeasureSpec(
                    Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
            super.onMeasure(widthMeasureSpec, heightMeasureSpec_custom);
            ViewGroup.LayoutParams params = getLayoutParams();
            params.height = getMeasuredHeight();    
    }
}

Answer 2

You can use something like this, it will expand the list so it won't need scrolling. Just remember to wrap it in your XML with a ScrollView:

<ScrollView
                android:layout_width="match_parent"
                android:layout_height="wrap_content" >

and the class:

public class ExpandedListView extends ListView {

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

public ExpandedListView(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);
        setLayoutParams(params);
    }

    super.onDraw(canvas);
}
}

You can also refer to this question which will be helpful: Calculate the size of a list view or how to tell it to fully expand