Why Android does not generate R files and how to resolve them

1. The default SDK environment is caused by inconsistencies with the introduced environment.

2. The SDK has errors or the SDK is not found.

2. The target=android-8 defined in the Default.propites file is caused by an inconsistency with the eclipse settings.

3. There is an error in the project, the XML file is wrong, the resource file name is illegal: there are uppercase characters, the number begins, there are spaces, and so on.

1, when you set up the project does not appear R, first clean, to avoid the previous error.

2, rebuild the project, if not, build a few more, will be better.

3. Think about the illegal wording of the place you have just changed, or correct the XML error.

Why Android does not generate R files and how to resolve them