我真的不明所以，完全想不明白，那个很长的 ItemView 主要是不显示，就相当于是 Invisible 的效果，位置信息页在，按钮也能触发，也能拖动，就是不可见。好郁闷呀
SpaceItemDecoration 的源码：
public class SpaceItemDecoration extends RecyclerView.ItemDecoration {
/**
* 列数
*/
private int mSpanCount;
/**
* 间距
*/
private int mSpace;
public SpaceItemDecoration(Context context, int spanCount, float space) {
this.mSpanCount = spanCount;
this.mSpace = PXUtils.dp2px(context,space);
}
@Override
public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
int position = parent.getChildAdapterPosition(view);
int spanIndex = ((StaggeredGridLayoutManager.LayoutParams) view.getLayoutParams()).getSpanIndex();
if (position == 0 || position == 1) {
outRect.top = mSpace;
}
outRect.bottom = mSpace;
if (spanIndex == 0) {
outRect.left = mSpace;
outRect.right = mSpace / 2;
} else {
outRect.left = mSpace / 2;
outRect.right = mSpace;
}
}
}
使用：
mRecyclerView = root.findViewById(R.id.recycler_view);
mStaggeredGridLayoutManager = new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL);
mRecyclerView.setLayoutManager(mStaggeredGridLayoutManager);
mRecyclerView.addItemDecoration(new SpaceItemDecoration(getContext(), 2, 7));
