divide by zero

Question

divide by zero

Opened this issue 6 years ago · 3 comments

eslam2010011 commented 6 years ago

my code

adapter= new MessagingAdapter(messagesList,getActivity(), databaseHelper.nameUser(),usersList );
//rvListMessage.setHasFixedSize(true);
mSkidRightLayoutManager = new SkidRightLayoutManager(1.5f, 0.85f);
rvListMessage.setLayoutManager(mSkidRightLayoutManager);
rvListMessage.setAdapter(adapter);

java.lang.ArithmeticException: divide by zero
at com.dingmouren.layoutmanagergroup.skidright.SkidRightLayoutManager.fill(SkidRightLayoutManager.java:77)
at com.dingmouren.layoutmanagergroup.skidright.SkidRightLayoutManager.onLayoutChildren(SkidRightLayoutManager.java:73)
at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3812)
at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3529)
at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:4082)
at android.view.View.layout(View.java:17778)
at android.view.ViewGroup.layout(ViewGroup.java:5575)
at android.support.design.widget.CoordinatorLayout.layoutChild(CoordinatorLayout.java:1191)
at android.support.design.widget.CoordinatorLayout.onLayoutChild(CoordinatorLayout.java:876)
at android.support.design.widget.CoordinatorLayout.onLayout(CoordinatorLayout.java:895)
at android.view.View.layout(View.java:17778)
at android.view.ViewGroup.layout(ViewGroup.java:5575)
at android.support.v4.widget.SwipeRefreshLayout.onLayout(SwipeRefreshLayout.java:606)
at android.view.View.layout(View.java:17778)
at android.view.ViewGroup.layout(ViewGroup.java:5575)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at android.view.View.layout(View.java:17778)
at android.view.ViewGroup.layout(ViewGroup.java:5575)
at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1079)
at android.view.View.layout(View.java:17778)
at android.view.ViewGroup.layout(ViewGroup.java:5575)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at android.view.View.layout(View.java:17778)
at android.view.ViewGroup.layout(ViewGroup.java:5575)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1741)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1585)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1494)
at android.view.View.layout(View.java:17778)
at android.view.ViewGroup.layout(ViewGroup.java:5575)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at android.view.View.layout(View.java:17778)
at android.view.ViewGroup.layout(ViewGroup.java:5575)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1741)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1585)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1494)
at android.view.View.layout(View.java:17778)
at android.view.ViewGroup.layout(ViewGroup.java:5575)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at com.android.internal.policy.DecorView.onLayout(DecorView.java:727)
at android.view.View.layout(View.java:17778)
at android.view.ViewGroup.layout(ViewGroup.java:5575)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2353)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2075)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1261)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6345)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:874)
at android.view.Choreographer.doCallbacks(Choreographer.java:686)
at android.view.Choreographer.doFrame(Choreographer.java:621)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:860)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6125)
at java.lang.reflect.Method.invoke(Method.java:-2)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:893)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:783)

Answer 1 · 2018-09-07T06:46:45.000Z

源码中：@OverRide
public void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) {
if (state.getItemCount() == 0 || state.isPreLayout()) return;
removeAndRecycleAllViews(recycler);
if (!mHasChild) {
mItemViewHeight = getVerticalSpace();
mItemViewWidth = (int) (mItemViewHeight / mItemHeightWidthRatio);
mHasChild = true;
}
mItemCount = getItemCount();
mScrollOffset = makeScrollOffsetWithinRange(mScrollOffset);
fill(recycler);
}

关键位置在mItemViewHeight = getVerticalSpace();
这里是直接获取RecyclerView的高度，目测你的RecyclerView写成wrap_content了，取到的值为0就出问题了，你要么改源码，要么改RecyclerView的高度

Answer 2 · 2018-09-13T09:53:08.000Z

如果是recycleView嵌套好像也报这个而且目前没有解决办法啊

Answer 3 · 2019-10-08T11:56:57.000Z

any solution(happening if recycler view has 0 items)?

FATAL EXCEPTION: main
Process: com.aisar.videodownloader, PID: 5723
java.lang.ArithmeticException: divide by zero
at com.dingmouren.layoutmanagergroup.skidright.SkidRightLayoutManager.fill(SkidRightLayoutManager.java:77)
at com.dingmouren.layoutmanagergroup.skidright.SkidRightLayoutManager.scrollHorizontallyBy(SkidRightLayoutManager.java:163)
at androidx.recyclerview.widget.RecyclerView.scrollStep(RecyclerView.java:1829)
at androidx.recyclerview.widget.RecyclerView.scrollByInternal(RecyclerView.java:1927)
at androidx.recyclerview.widget.RecyclerView.onTouchEvent(RecyclerView.java:3187)
at android.view.View.dispatchTouchEvent(View.java:10023)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2626)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2307)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2632)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2632)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2632)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2632)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2632)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2632)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2632)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321)
at com.android.internal.policy.DecorView.superDispatchTouchEvent(DecorView.java:413)
at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1808)
at android.app.Activity.dispatchTouchEvent(Activity.java:3061)
at androidx.appcompat.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:69)
at com.android.internal.policy.DecorView.dispatchTouchEvent(DecorView.java:375)
at android.view.View.dispatchPointerEvent(View.java:10243)
at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4438)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4306)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3853)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3906)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3872)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3999)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3880)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:4056)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3853)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3906)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3872)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3880)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3853)
at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:6246)
at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:6220)
at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:6181)
at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:6349)
at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185)
at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method)
at android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:176)
at android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:6320)