滑动的时候报错

[ouyangmingzhuanyong]

java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.support.design.widget.TabLayout$Tab.getCustomView()' on a null object reference
at me.weyye.library.colortrackview.ColorTrackTabLayout.getColorTrackView(ColorTrackTabLayout.java:177)
at me.weyye.library.colortrackview.ColorTrackTabLayout.tabScrolled(ColorTrackTabLayout.java:169)
at me.weyye.library.colortrackview.ColorTrackTabLayout$ColorTrackTabLayoutOnPageChangeListener.onPageScrolled(ColorTrackTabLayout.java:205)
at android.support.v4.view.ViewPager.dispatchOnPageScrolled(ViewPager.java:1950)
at android.support.v4.view.ViewPager.onPageScrolled(ViewPager.java:1924)
at android.support.v4.view.ViewPager.pageScrolled(ViewPager.java:1862)
at android.support.v4.view.ViewPager.performDrag(ViewPager.java:2370)
at android.support.v4.view.ViewPager.onTouchEvent(ViewPager.java:2262)
at android.view.View.dispatchTouchEvent(View.java:9328)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2564)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2250)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2570)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2264)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2570)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2264)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2570)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2264)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2570)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2264)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2570)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2264)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2570)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2264)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2570)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2264)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2570)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2264)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2570)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2264)
at com.android.internal.policy.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2452)
at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1749)
at android.app.Activity.dispatchTouchEvent(Activity.java:2927)
at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:71)
at com.android.internal.policy.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2405)
at android.view.View.dispatchPointerEvent(View.java:9548)
at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4506)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4304)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3814)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3874)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3833)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3981)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3841)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:4038)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3814)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3874)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3833)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3841)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3814)
at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:6230)
at android.view.