交错的相似回收者视图

Question

我想实现项目列表，如下所示。

1. 如果项目总数 = 1（显示完整项目）
2. 如果项目总数 = 2（在 2 列中显示 2 个项目）
3. 如果项目总数 = 3（显示 3 个项目，第 1 列中有 2 个，第 2 列中有 1 个）
4. 等等...

如果有 5 项和 6 项，该部分应如下所示滚动

I want to implement this, as one of my section in my application. What is the correct way of implementing this in Android, I need a starting point. Is this possible with a recycler view? Please share any library or github project if available.

Answer 1

可以使用自定义布局管理。我们可以根据需要修改布局管理器。

我使用了 vlayout git 库中的 DelegateAdapter，它真的很棒。 查看下方 link 了解更多详情。

https://github.com/alibaba/vlayout

Answer 2

是的，您可以使用 StaggeredLayoutManager 实现此目的，其中您需要根据您的数据设置 span count & Orientation尺寸如下代码：

enter code private void setSpanValue() {
    StaggeredGridLayoutManager staggeredGridLayoutManager;
    if (modelArrayList.size() == 1) {
        staggeredGridLayoutManager = new StaggeredGridLayoutManager(1, StaggeredGridLayoutManager.HORIZONTAL);
        recyclerView.setLayoutManager(staggeredGridLayoutManager);
    } else if (modelArrayList.size() == 2) {
        staggeredGridLayoutManager = new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL);
        recyclerView.setLayoutManager(staggeredGridLayoutManager);
    } else if (modelArrayList.size() == 3) {
        staggeredGridLayoutManager = new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL);
        recyclerView.setLayoutManager(staggeredGridLayoutManager);
    } else if (modelArrayList.size() == 4) {
        staggeredGridLayoutManager = new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL);
        recyclerView.setLayoutManager(staggeredGridLayoutManager);
    } else {
        staggeredGridLayoutManager = new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.HORIZONTAL);
        recyclerView.setLayoutManager(staggeredGridLayoutManager);
    }

    recyclerView.setLayoutManager(staggeredGridLayoutManager);
    recyclerView.hasFixedSize();
    Adapter adapter = new Adapter(this, modelArrayList, checkEvenOrOdd(modelArrayList.size()));
    recyclerView.setAdapter(adapter);
}

对于超过 4 个项目，您需要检查数据是偶数还是奇数，如下代码所示：

private boolean checkEvenOrOdd(int n) {
    if ((n % 2) == 0) {
        // number is even
        return true;

    } else {
        // number is odd
        return false;
    }
}

查看我的示例项目，它将解决您的问题 https://github.com/DanishAmjad12/HetrogenousLayout