问题
I am getting the following message when referencing a JAR I have added to my Android project:
The JAR is located in my libs/ folder
and is directly referenced in the Build Path
The JAR is 'checked' in the "Order and Export" tab
From what information I can gather on adding JARs to Android projects, this procedure seems to be correct. Any clue as to what is causing this error?
来源：https://stackoverflow.com/questions/22214603/android-java-lang-noclassdeferror-when-using-external-jar