MainActivity类型的层次结构不一致 [英] The hierarchy of the type MainActivity is inconsistent

问题描述

我通过eclipse使用MainActivity创建了一个新的Android项目。
我将ActionBarSherlock添加到项目中（属性> Android，然后单击添加）。
然后，当我用 extends SherlockFragmentActivity替换 extends Activity时，出现编译错误 MainActivity类型的层次结构不一致。

I created a new Android project via eclipse, with a MainActivity. I added ActionBarSherlock to the project (Properties > Android and clicked Add). Then, when I replace "extends Activity" with "extends SherlockFragmentActivity" I get a compile error "The hierarchy of the type MainActivity is inconsistent".

I还尝试创建一个没有Activity的项目，然后创建一个继承自SherlockFragmentActivity的类 MainActivity，没有编译时错误，但是运行时错误为 ClassNotfoundException：com.NadavLitvak.nadavfragmentdemo.MainActivity。

I also tried to create a project without an Activity, then created a class "MainActivity" that inherits from SherlockFragmentActivity, and there are no compile time errors, but with a run-time error "ClassNotfoundException: com.NadavLitvak.nadavfragmentdemo.MainActivity"

推荐答案

您的项目还应该引用android-support-v4.jar（包含在ABS的libs文件夹中。） > Java Build Path-> Add JARs ...，然后从ActionBarSherlock-> libs中选择该jar

Your project should also reference the android-support-v4.jar (which is included in ABS's libs folder.) So, Properties->Java Build Path->Add JARs... and select that jar from ActionBarSherlock->libs

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