RecyclerView中的LayoutManager

LinearLayoutManager

可以实现垂直或水平的线性布局

• 默认的垂直方向的线性布局

LinearLayoutManager layoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);

• 水平方向的现行布局

// 第三个参数用于指定是否从右到左布局,基本都是false
LinearLayoutManager layoutManager = new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false);
recyclerView.setLayoutManager(layoutManager);

GridLayoutManager

网格样式的布局，GridLayoutManager继承自LinearLayoutManager

int spanCount = 3;	// 指定每行/列内的item个数
GridLayoutManager layoutManager = new GridLayoutManager(this, spanCount);
recyclerView.setLayoutManager(layoutManager);

setSpanSizeLookup
用来设置每个item需要占用多少个格子，最多不能超过spanCount

int spanCount = 3;
GridLayoutManager layoutManager = new GridLayoutManager(this, spanCount);
layoutManager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
    @Override
    public int getSpanSize(int position) {
        return (position % spanCount) + 1;
    }
});

StaggeredGridLayoutManager

瀑布流样式布局

int spanCount = 3;	// 指定每行/列内的item个数
StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(this, spanCount);
recyclerView.setLayoutManager(layoutManager);

setFullSpan
用来设置item是否占用整行/列，可以用来实现Header/Footer的效果

来源：CSDN

作者：20200316

链接：https://blog.csdn.net/weixin_46576403/article/details/104900835