我正在尝试使平滑的滚动需要在回收视图中的位置。我在LinearLayoutManager中使用ovverides方法平滑ScrollToPoplace，它的工作很好。但是，我需要在屏幕顶部设置滚动位置（如果可能的话）。我也尝试过scrollToPositionRetOffset，它是我需要的，但是现在，没有平滑的效果。如何混合这些方法，并在顶部设置项目进行平滑滚动？
private LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this){
@Override
public void smoothScrollToPosition(RecyclerView recyclerView,
RecyclerView.State state, final int position) {
LinearSmoothScroller smoothScroller =
new LinearSmoothScroller(getApplicationContext()) {
//This controls the direction in which smoothScroll looks
//for your view
@Override
public PointF computeScrollVectorForPosition
(int targetPosition) {
return this
.computeScrollVectorForPosition(targetPosition);
}
//This returns the milliseconds it takes to
//scroll one pixel.
@Override
protected float calculateSpeedPerPixel
(DisplayMetrics displayMetrics) {
return 50f/displayMetrics.densityDpi;
}
};
smoothScroller.setTargetPosition(position);
startSmoothScroll(smoothScroller);
}
};
这是一个延迟响应，但我想建议一个库SnappySmoothScroller。这个库可以使用特定的快照位置平滑滚动：SnapType. START、SnapType.CENTER或SnapType.END
像这样使用：
private LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this) {
@Override
public void smoothScrollToPosition(RecyclerView recyclerView, RecyclerView.State state, int position) {
SnappySmoothScroller scroller = new SnappySmoothScroller.Builder()
.setPosition(position)
.setSnapType(SnapType.START)
.setScrollVectorDetector(new LinearLayoutScrollVectorDetector(this))
.build(recyclerView.getContext());
startSmoothScroll(scroller);
}
};
