解决E/RecyclerView: No layout manager attached; skipping layout

简介: 解决E/RecyclerView: No layout manager attached; skipping layout

列表在Android中是最常用的展示方式了,以前主要是使用ListView,现在已经被RecyclerView取代了。

但是用惯了ListView的同学,在用RecyclerView可能习惯了ListView的使用方式。

最常见的错误

//数据源
List list = new ArrayList();
list.add(...);
list.add(...);
list.add(...);
//创建adapter
adapter = new Adapter(list);
//设置adapter
recyclerView.setAdapter(adapter);

运行后,发现列表中没有任何数据,一片空白。。

控制台还会出现以下红色的错误提示。

E/RecyclerView: No layout manager attached; skipping layout

这是因为忘记给RecyclerView添加LayoutManager了。

解决办法。在setAdapter()之前先设置LayoutManager就OK啦。

List list = new ArrayList();
list.add(...);
list.add(...);
list.add(...);
adapter = new Adapter(list);
//必须先设置LayoutManager
recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.setAdapter(adapter);
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