如何将scrollView滚动到内部View的位置

Question

我有一个不在“ ScrollView”根目录下的视图。如果我将scrollTo(0, view.getTop())设置为无效，它只会滚动一点，我想是因为视图不在ScrollView的根容器中。

我的视图树位于以下位置：

ScrollView 
   - LinearLayout
        - CardView
           - RelativeLayout
              - LinearLayout
                   - MyView

有什么想法可以将滚动视图精确地移动到MyView.getTop()位置吗？

Answer 1

尝试

mainScrollView.fullScroll(ScrollView.FOCUS_UP);

应该可以。

Answer 2

我使用以下代码在特定位置显示popupWindow，检查其是否适合您的情况

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

和locateview函数是

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
}