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我为我的动画 Gridlayout 使用了自定义 RecyclerView，它在其他设备上运行良好。不幸的是，当我在 Redmi Note 2 上对其进行测试时，我遇到了一个奇怪的错误，即第一行项目无法正确显示，因为空间很大，就像屏幕截图上的一样

截屏

我注意到造成这种情况的原因是在添加时android:requiresFadingEdge="vertical"

这是自定义的 RecyclerView 类

public class GridRecyclerView extends RecyclerView {

    public GridRecyclerView(Context context) {
        super(context);
    }

    public GridRecyclerView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public GridRecyclerView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    protected void attachLayoutAnimationParameters(View child, ViewGroup.LayoutParams params,
                                                   int index, int count) {
        final LayoutManager layoutManager = getLayoutManager();
        if (getAdapter() != null && layoutManager instanceof GridLayoutManager) {

            GridLayoutAnimationController.AnimationParameters animationParams =
                    (GridLayoutAnimationController.AnimationParameters) params.layoutAnimationParameters;

            if (animationParams == null) {
                // If there are no animation parameters, create new once and attach them to
                // the LayoutParams.
                animationParams = new GridLayoutAnimationController.AnimationParameters();
                params.layoutAnimationParameters = animationParams;
            }

            // Next we are updating the parameters

            // Set the number of items in the RecyclerView and the index of this item
            animationParams.count = count;
            animationParams.index = index;

            // Calculate the number of columns and rows in the grid
            final int columns = ((GridLayoutManager) layoutManager).getSpanCount();
            animationParams.columnsCount = columns;
            animationParams.rowsCount = count / columns;

            // Calculate the column/row position in the grid
            final int invertedIndex = count - 1 - index;
            animationParams.column = columns - 1 - (invertedIndex % columns);
            animationParams.row = animationParams.rowsCount - 1 - invertedIndex / columns;

        } else {
            // Proceed as normal if using another type of LayoutManager
            super.attachLayoutAnimationParameters(child, params, index, count);
        }
    }

}

对于整个代码，您可以从这个博客 https://proandroiddev.com/enter-animation-using-recyclerview-and-layoutanimation-part-2-grids-688829b1d29b获得它

有人知道这个问题吗？

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