eclipse compile cocos2dx error ...... fatal error: GameManager.h: No such file or directory

cocos2dx eclipse android

16:44:50 **** Build of configuration Default for project HelloCpp ****
"E: \ \ androdTool \ \ android-ndk-r8e-windows-x86 \ \ android-ndk-r8e \ \ ndk-build.cmd"
"Compile + + thumb: hellocpp_shared <= AppDelegate.cpp
In file included from jni / / / Classes / AppDelegate.cpp:.... 3:0:
jni / / / Classes / AppDelegate.h:.... 6:25: fatal error: GameManager.h: No such file or directory
compilation terminated.
make: *** [obj / local / armeabi / objs / hellocpp_shared / __ / __ / Classes / AppDelegate.o] Error 1

How to solve ah

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