如何在水平RecyclerView中捕捉到LinearSnapHelper的特定位置？

Question

如何在水平 RecyclerView 中捕捉到 LinearSnapHelper() 的特定位置？RecyclerView有一个函数scrolltoposition，它滚动到该位置，但没有将其保持在这个snaphelper的中心。

I am looking for something like below image. So when I set to particular position, it will keep it in center. I dont find anything related to select position for SnapHelper

i find this , but this doesn't help me. Any help would be appreciated.

Answer 1

将其添加到您想要滚动回收器视图的位置

 recyclerView.scrollToPosition(position)
    recyclerView.post {
        var view = recyclerView.layoutManager?.findViewByPosition(position);
        if (view == null) {
          // do nothing
        }

        var snapDistance = snapHelper.calculateDistanceToFinalSnap(recyclerView.layoutManager!!, view!!)
        if (snapDistance?.get(0)   != 0 || snapDistance[1] != 0) {
            recyclerView.scrollBy(snapDistance?.get(0)!!, snapDistance?.get(1));
        }
    }

通过使用附加到回收器视图的 LinearSnap Helper

  var snapHelper = LinearSnapHelper()
    snapHelper.attachToRecyclerView(recyclerView)