阅读中滑动进度条闪退问题

[CrazySongCN]

@LiangLuDev 首先谢谢你的分享，其次如题问题麻烦帮忙看下。

具体操作步骤：
滑动进度条到头-点击下一章-滑动进度条到头-点击下一章，如此重复2-3章就会闪退

日志如下：
java.lang.IndexOutOfBoundsException: Index: 16, Size: 15
at java.util.ArrayList.get(ArrayList.java:411)
at com.lianglu.weyue.widget.page.PageLoader.getCurPage(PageLoader.java:1074)
at com.lianglu.weyue.widget.page.PageLoader.skipToPage(PageLoader.java:282)
at com.lianglu.weyue.view.activity.impl.ReadActivity$4.onStopTrackingTouch(ReadActivity.java:311)
at android.widget.SeekBar.onStopTrackingTouch(SeekBar.java:121)
at android.widget.AbsSeekBar.onTouchEvent(AbsSeekBar.java:772)
at android.view.View.dispatchTouchEvent(View.java:10039)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2634)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2634)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2634)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2634)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2634)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2634)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2634)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2634)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2634)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321)
at com.android.internal.policy.DecorView.superDispatchTouchEvent(DecorView.java:417)
at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1808)
at android.app.Activity.dispatchTouchEvent(Activity.java:3198)
at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:68)
at com.android.internal.policy.DecorView.dispatchTouchEvent(DecorView.java:379)
at android.view.View.dispatchPointerEvent(View.java:10261)
at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4500)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4365)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3905)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3958)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3924)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:4051)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3932)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:4108)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3905)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3958)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3924)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3932)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3905)
at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:6309)
at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java