Android: how to check if a View inside of ScrollView is visible?

Question

I have a ScrollView which holds a series of Views. I would like to be able to determine if a view is currently visible (if any part of it is curre

Answer 1

I you want to detect if your View is fully visible, try with this method:

private boolean isViewVisible(View view) {
    Rect scrollBounds = new Rect();
    mScrollView.getDrawingRect(scrollBounds);
    float top = view.getY();
    float bottom = top + view.getHeight();
    if (scrollBounds.top < top && scrollBounds.bottom > bottom) {
        return true; //View is visible.
    } else {
        return false; //View is NOT visible.
    }
}

Strictly speaking you can get the visibility of a view with:

if (myView.getVisibility() == View.VISIBLE) {
    //VISIBLE
} else {
    //INVISIBLE
}

The posible constant values of the visibility in a View are:

VISIBLE This view is visible. Use with setVisibility(int) and android:visibility.

INVISIBLE This view is invisible, but it still takes up space for layout purposes. Use with setVisibility(int) and android:visibility.

GONE This view is invisible, and it doesn't take any space for layout purposes. Use with setVisibility(int) and android:visibility.