android java类无法识别R文件

Question

I had two layout files on R.java and I checked it was there on R.java(written on it). But strangely the java class cannot recognize the layout and keep saying that the layout cannot be resolved. I Have Run the project but it keep saying that my project contains error. Is this some kind of bugs?

Answer 1

检查是否有R导入（它不应该）删除R（它应该自己生成）清理项目运行

Answer 2

Check the import section of your java class. Sometimes Eclipse incorrectly imports android.R class instead of one generated in your project.

Answer 3

Please check the Console. It should contain some error messages which prevent the R file from being generated.

Answer 4

I had similar issue in Android Studio. A gradle build fixed the issue. Hope a ant/gradle rebuild of the project will fix the broken dependency.

Answer 5

Make sure your XML files have no errors before using anything referenced in the R.java file. R.java isn't built if there are errors in your XML files.

Answer 6

This must be for 2 reason normaly.

You have a error in some xml of your project

You must to clean the proyect (project - clean - clean project)