我通过覆盖getItemOffsets()方法使用GridLayoutManager将相等的边距应用于我的RecyclerView(请参阅下面的代码).

但是,从适配器中删除对象时,将调用删除动画而不使用偏移.因此,anmiation开始于与要移除的对象不同的位置.

我尝试通过getSpanIndex(position)获取位置,但位置(parent.getChildAdapterPosition(view))返回NO_POSITION,因为当调用getItemOffsets()时,对象已从适配器中删除.

有没有办法在我的情况下得到抵消？

@Override

public void getItemOffsets(Rect outRect, View view,

RecyclerView parent, RecyclerView.State state) {

GridLayoutManager mgr = parent.getLayoutManager();

int position = parent.getChildAdapterPosition(view);

if (position == RecyclerView.NO_POSITION) {

// here I need to access the position of the current element

// and call outRect.set(left, top , right, bottom);

// which is not possible because it is no longer in the adapter

return;

}

int spanCount = mgr.getSpanCount();

int spanSize = mgr.getSpanSizeLookup().getSpanSize(position);

int spanIndex = mgr.getSpanSizeLookup().getSpanIndex(position, spanCount);

if (spanIndex == spanCount-1) {

// last element

left = space / 2;

right = space;

} else if (spanIndex == 0) {

// first element

left = space;

right = space / 2;

} else {

// middle element

left = space / 2;

right = space / 2;

}

outRect.set(left, top, right, bottom);

}