如何在RecyclerView的每个网格之间添加一个分隔线？

Question

我需要在RecyclerView的每个网格之间添加一个分隔器。

RecyclerView recyclerView= (RecyclerView) profileView.findViewById(R.id.profile_recycler_view);
StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL);
recyclerView.setLayoutManager(layoutManager);
Adapter Adapter = new Adapter(getActivity());
recyclerView.setAdapter(profileAdapter);

请帮帮我.

Answer 1

为此，您需要装饰。
以下是示例：

public class ItemOffsetDecoration extends RecyclerView.ItemDecoration {
    private int offset;

    public ItemOffsetDecoration(int offset) {
        this.offset = offset;
    }

    @Override
    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
        outRect.left = offset;
        outRect.right = offset;
        outRect.bottom = offset;
        if(parent.getChildAdapterPosition(view) == 0) {
            outRect.top = offset;
        }
    }
}

在您的活动/片段中

grid.setLayoutManager(new GridLayoutManager(this, 2));
grid.addItemDecoration(new ItemOffsetDecoration(1));