# Android编译时提示“Namespace ‘app’ not bound”

- Link: https://www.xuepaijie.com/html/skill/devops/1136.html
- Published: 2018-05-14T15:11:22+08:00
- Author: Admin

主要的问题是根节点少了一个声明。

补上：

    ```html;
    xmlns:app="http://schemas.android.com/apk/res-auto"
    ```