已在Recyclerview中设置OnFlingListener的实例

我在我的Android应用程序中使用了RecyclerView。 我的RecyclerView中有很多cardview,因此一次只向用户显示1张cardview。 用户必须滑动才能看到下一张卡片。

我遇到了一个问题,当用户进行滑动时,recyclerview会滚动到最后。 相反,我需要的是当用户滑动时,如本文所述,向用户显示下一张卡片。

如何在水平回收视图上进行滑动只会将下一个项目放入视图 – Android

SnapHelper snapHelper = new PagerSnapHelper(); snapHelper.attachToRecyclerView(recyclerView); 

我尝试了上面链接中提到的答案。 但是当用户刷卡时我得到一个例外。

请帮我解决一下。

错误

 java.lang.IllegalStateException: An instance of OnFlingListener already set. at android.support.v7.widget.SnapHelper.setupCallbacks(SnapHelper.java:114) at android.support.v7.widget.SnapHelper.attachToRecyclerView(SnapHelper.java:102) at com.abc.ui.trm.TrCard.setupCardView(TrCard.java:62) at com.abc.ui.trm.TrCard.setupCardView(TrCard.java:29) at com.abc.ui.core.card.BaseCardView.processCardView(BaseCardView.java:134) at com.abc.ui.card.CardRecyclerAdapter.onViewAttachedToWindow(CardRecyclerAdapter.java:398) at android.support.v7.widget.RecyclerView.dispatchChildAttached(RecyclerView.java:6758) at android.support.v7.widget.RecyclerView$5.addView(RecyclerView.java:696) at android.support.v7.widget.ChildHelper.addView(ChildHelper.java:107) at android.support.v7.widget.RecyclerView$LayoutManager.addViewInt(RecyclerView.java:7697) at android.support.v7.widget.RecyclerView$LayoutManager.addView(RecyclerView.java:7655) at android.support.v7.widget.RecyclerView$LayoutManager.addView(RecyclerView.java:7643) at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1539) at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1488) at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:585) at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3506) at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3254) at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3767) at android.view.View.layout(View.java:18799) at android.view.ViewGroup.layout(ViewGroup.java:5952) at com.abc.ui.core.refresh.LegacySwipeRefreshLayout.onLayout(LegacySwipeRefreshLayout.java:337) at android.view.View.layout(View.java:18799) at android.view.ViewGroup.layout(ViewGroup.java:5952) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:18799) at android.view.ViewGroup.layout(ViewGroup.java:5952) at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1079) at android.view.View.layout(View.java:18799) at android.view.ViewGroup.layout(ViewGroup.java:5952) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:18799) at android.view.ViewGroup.layout(ViewGroup.java:5952) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:18799) at android.view.ViewGroup.layout(ViewGroup.java:5952) at android.support.v4.widget.DrawerLayout.onLayout(DrawerLayout.java:1193) at android.view.View.layout(View.java:18799) at android.view.ViewGroup.layout(ViewGroup.java:5952) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:18799) at android.view.ViewGroup.layout(ViewGroup.java:5952) 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:18799) at android.view.ViewGroup.layout(ViewGroup.java:5952) 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:822) at android.view.View.layout(View.java:18799) at android.view.ViewGroup.layout(ViewGroup.java:5952) 

我设法通过添加这一行来解决这个问题

 recyclerView.setOnFlingListener(null); 

之前

 snapHelper.attachToRecyclerView(recyclerView); 

你所要做的就是放置

 SnapHelper snapHelper = new PagerSnapHelper(); snapHelper.attachToRecyclerView(recyclerView); 

onCreateViewHolder中,而不是onBindViewHolder