R 1不能被解析为一个变量？ [英] R cannot be resolved to a variable?

问题描述

我打扫我的项目，现在我得到一个R不能解析为一个变量。这是罚款之前，我洗干净。

I cleaned my project and now I get a "R cannot be resolved to a variable." It was fine before I cleaned it.

我试图再次清洗它，再建项目，创建一个新的项目，我的所有文件复制过来了，我已经到了Android SDK管理器并安装了所有的Android SDK构建的工具，以安装所有像其他计算器职位的选项也提到：

I have tried cleaning it again, building the project again, creating a new project and copying all my files over, and I've gone to the Android SDK Manager and installed all the "Android SDK Build-tools" to Install all the options like the other stackoverflow posts have mentioned:

任何人都可以提出什么吗？

Can anyone suggest anything?

上图为我生成的文件和缺乏R.java文件。

The above picture shows my generated files and lack of an R.java file.

上图为我的问题记录。

推荐答案

确认R是在同一个包，你想从叫它文件。
（或导入在源文件中包）

Make sure R is in the same package as the file where you want to call it from. (or import the package in the source file)

要更改R档的包打开应用清单文件并更改装箱率=同一包作为源文件是在

To change the package of the R file open your App Manifest file and change packge="" to the same package as where your source files are in.

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