问题的出现

错误代码:

 java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.gizwits.opensource.appkit/

com.gizwits.opensource.appkit.UserModule.GosUserLoginActivity}: java.lang.ClassNotFoundException: Didn't find 

class "com.gizwits.opensource.appkit.UserModule.GosUserLoginActivity" on path: DexPathList[[zip file "/data/

app/com.gizwits.opensource.appkit-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.gizwits.opensource.appkit-1, /system/lib]]
 java.lang.RuntimeExcept