如何将scrollView滚动到内部View的位置

Question

I have a view which is not at the root level of the "ScrollView". If i set scrollTo(0, view.getTop()) it won't work, it'll scroll just a bit, I am guessing because the view is not in the root container of the ScrollView .

My view tree is somewhere along the lines of:

ScrollView 
   - LinearLayout
        - CardView
           - RelativeLayout
              - LinearLayout
                   - MyView

Any ideas how I can move the scrollview precisely to MyView.getTop() position ?

Answer 1

Try

mainScrollView.fullScroll(ScrollView.FOCUS_UP);

It Should work.

Answer 2

I used below code for showing a popupWindow at specific location , check if its working in your case

 val location = locateView(view)  // here view will be the view to which you want to scroll
 scrollview.scrollTo(0, location.top)

and locateview function is

fun locateView(v: View?): Rect? {
    var loc_int = IntArray(2)
    if (v == null) return null;
    try {
        v.getLocationOnScreen(loc_int)
    } catch (e : NullPointerException) {
        return null
    }
    val location = Rect()
    location.left = loc_int[0]
    location.top = loc_int[1]
    location.right = location.left + v.width
    location.bottom = location.top + v.height
    return location
}