如何在RecyclerView的每个网格之间添加分隔线?

问题描述

我需要在RecyclerView的每个网格之间添加一个分隔线.

I need to add a divider between each grid of the RecyclerView.

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);

请帮助我.

推荐答案

为此，您需要Decoration.
这是示例:

You need Decoration for this.
Here is the example:

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));

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