actionbar cannot be resolved to a type

问题

Compiling error when build project in sdk\extras\android\support\samples\Support4Demos

1. Eclipse, import existing code into workspace, ...\sdk\extras\android\support\samples\Support4Demos

2. Right click on the imported project -> build path -> configure build path, add the jar file named "android-support-v4.jar" in sdk\extras\android\support\v4

3. Build the project, then I have 196 errors. Most part is "ActionBar cannot be resolved to a type"

I have also tried to import android-support-v13.jar, result is the same. Why?

回答1:

Your issue could be solved by changing the compiler compliance level to 1.6 by Project->Properties->Java Compiler

来源：https://stackoverflow.com/questions/18625890/actionbar-cannot-be-resolved-to-a-type