NoClassDefFoundError problem, jar package seems not less

  java, question

08-11 17:42:30.336: E/AndroidRuntime(24346): java.lang.NoClassDefFoundError: com.qiniu.android.storage.persistent.FileRecorder
08-11 17:42:30.336: E/AndroidRuntime(24346): at com.ark.collection.ui.CollectionApplication.initQiniu(CollectionApplication.java:142)
08-11 17:42:30.336: E/AndroidRuntime(24346): at com.ark.collection.ui.CollectionApplication.onCreate(CollectionApplication.java:116)
08-11 17:42:30.336: E/AndroidRuntime(24346): at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1007)
08-11 17:42:30.336: E/AndroidRuntime(24346): at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4374)
08-11 17:42:30.336: E/AndroidRuntime(24346): at android.app.ActivityThread.access$1500(ActivityThread.java:141)
08-11 17:42:30.336: E/AndroidRuntime(24346): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1264)
08-11 17:42:30.336: E/AndroidRuntime(24346): at android.os.Handler.dispatchMessage(Handler.java:102)
08-11 17:42:30.336: E/AndroidRuntime(24346): at android.os.Looper.loop(Looper.java:136)
08-11 17:42:30.336: E/AndroidRuntime(24346): at android.app.ActivityThread.main(ActivityThread.java:5049)
08-11 17:42:30.336: E/AndroidRuntime(24346): at java.lang.reflect.Method.invokeNative(Native Method)
08-11 17:42:30.336: E/AndroidRuntime(24346): at java.lang.reflect.Method.invoke(Method.java:515)
08-11 17:42:30.336: E/AndroidRuntime(24346): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
08-11 17:42:30.336: E/AndroidRuntime(24346): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:609)
08-11 17:42:30.336: E/AndroidRuntime(24346): at dalvik.system.NativeStart.main(Native Method)

Another seven cows. Are you sure you have introduced the jar package of seven cows?