Recyclerview 自定义适配FlexboxLayoutManager可设置间距的ItemDecoration

您可以使用RecyclerView的ItemDecoration来实现自定义间距。以下是一个自定义的ItemDecoration示例，可以在FlexboxLayoutManager中使用：

public class CustomItemDecoration extends RecyclerView.ItemDecoration {
    private int mSpacing;

    public CustomItemDecoration(int spacing) {
        this.mSpacing = spacing;
    }

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

        outRect.top = mSpacing;
        outRect.bottom = mSpacing;
        outRect.left = mSpacing;
        outRect.right = mSpacing;
    }
}

在FlexboxLayoutManager中使用：

FlexboxLayoutManager layoutManager = new FlexboxLayoutManager(context);
recyclerView.setLayoutManager(layoutManager);

CustomItemDecoration itemDecoration = new CustomItemDecoration(10); // 设置间距
recyclerView.addItemDecoration(itemDecoration);

这样就可以设置自定义的间距了。