RecyclerView - ItemDecorator - 不会切断项目的间距

Question

我使用以下分隔符进行垂直线性布局，它很好地工作：

public class VerticalSpaceItemDecoration extends RecyclerView.ItemDecoration {

    private final int mVerticalSpaceHeight;

    public VerticalSpaceItemDecoration(int mVerticalSpaceHeight) {
        this.mVerticalSpaceHeight = mVerticalSpaceHeight;
    }

    @Override
    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
        if (parent.getChildAdapterPosition(view) != parent.getAdapter().getItemCount() - 1)
            outRect.bottom = mVerticalSpaceHeight;
    }
}

基于此，我尝试为GridLayout编写相同的装饰器，但问题是，它正在切断我的项目。它看起来如下：

public class GridSpaceItemDecoration extends RecyclerView.ItemDecoration {

    private final int mSpaceSize;
    private final int mCols;

    public GridSpaceItemDecoration(int spaceSize, int cols) {
        this.mSpaceSize = spaceSize;
        mCols = cols;
    }

    @Override
    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {

        int rows = (int)Math.floor(parent.getAdapter().getItemCount() / mCols) + 1;
        int pos = parent.getChildAdapterPosition(view);
        int col = pos % mCols;
        int row = (int)Math.floor(pos / mCols);

        final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) view.getLayoutParams();

        if (col < mCols - 1)
            outRect.right = /*params.rightMargin + view.getPaddingRight() +*/ mSpaceSize;
        if (row < rows - 1)
            outRect.bottom = /*params.leftMargin + view.getPaddingLeft() +*/ mSpaceSize;
    }
}

两个Decorators的结果如下（添加调试的颜色）：

图像显示，GridLayout项目被切断（在项目下方的文字处很容易看到）。我应该提一下，两者的适配器是相同的，我只使用另一个LayoutManager。这些物品是固定尺寸，这是我需要的东西！

Answer 1

在setClipChildren(false)上调用RecyclerView，它应该修复您看到的由装饰器创建的间距引起的剪辑。