Error adding recyclerview

[kunphonui]

Process: com.xlythe.view.floating.sample, PID: 24680 android.view.InflateException: Binary XML file line #2: Error inflating class <unknown> at android.view.LayoutInflater.createView(LayoutInflater.java:633) at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:55) at android.view.LayoutInflater.onCreateView(LayoutInflater.java:682) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:741) at android.view.LayoutInflater.inflate(LayoutInflater.java:482) at android.view.LayoutInflater.inflate(LayoutInflater.java:414) at com.mindorks.placeholderview.ViewAdapter.onCreateViewHolder(ViewAdapter.java:43) at com.mindorks.placeholderview.ViewAdapter.onCreateViewHolder(ViewAdapter.java:21) at android.support.v7.widget.RecyclerView$Adapter.createViewHolder(RecyclerView.java:6411) at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5597) at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5482) at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5478) at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2215) at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1542) at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1502) at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:595) at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3625) at android.support.v7.widget.RecyclerView.onMeasure(RecyclerView.java:3067) at android.view.View.measure(View.java:17438) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5465) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436) at android.widget.LinearLayout.measureVertical(LinearLayout.java:722) at android.widget.LinearLayout.onMeasure(LinearLayout.java:613) at android.view.View.measure(View.java:17438) at com.xlythe.view.floating.FloatingView.show(FloatingView.java:746) at com.xlythe.view.floating.FloatingView.access$2300(FloatingView.java:36) at com.xlythe.view.floating.FloatingView$12.onAnimationFinished(FloatingView.java:631) at com.xlythe.view.floating.AnimationFinishedListener.onAnimationEnd(AnimationFinishedListener.java:21) at android.view.ViewPropertyAnimator$AnimatorEventListener.onAnimationEnd(ViewPropertyAnimator.java:1116) at android.animation.ValueAnimator.endAnimation(ValueAnimator.java:1089) at android.animation.ValueAnimator$AnimationHandler.doAnimationFrame(ValueAnimator.java:666) at android.animation.ValueAnimator$AnimationHandler.run(ValueAnimator.java:682) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767) at android.view.Choreographer.doCallbacks(Choreographer.java:580) at android.view.Choreographer.doFrame(Choreographer.java:549) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5235) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:898) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:693) Caused by: java.lang.reflect.InvocationTargetException at java.lang.reflect.Constructor.newInstance(Native Method) at java.lang.reflect.Constructor.newInstance(Constructor.java:288) at android.view.LayoutInflater.createView(LayoutInflater.java:607) at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:55)  at android.view.LayoutInflater.onCreateView(LayoutInflater.java:682)  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:741)  at android.view.LayoutInflater.inflate(LayoutInflater.java:482)  at android.view.LayoutInflater.inflate(LayoutInflater.java:414)  at com.mindorks.placeholderview.ViewAdapter.onCreateViewHolder(ViewAdapter.java:43)  at com.mindorks.placeholderview.ViewAdapter.onCreateViewHolder(ViewAdapter.java:21)  at android.support.v7.widget.RecyclerView$Adapter.createViewHolder(RecyclerView.java:6411)  at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5597)  at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5482)  at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5478)  at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2215)  at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1542)  at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1502)  at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:595)  at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3625)  at android.support.v7.widget.RecyclerView.onMeasure(RecyclerView.java:3067)  at android.view.View.measure(View.java:17438)  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5465)  at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)  at android.widget.LinearLayout.measureVertical(LinearLayout.java:722)  at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)  at android.view.View.measure(View.java:17438)  at com.xlythe.view.floating.FloatingView.show(FloatingView.java:746)  at com.xlythe.view.floating.FloatingView.access$2300(FloatingView.java:36)  at com.xlythe.view.floating.FloatingView$12.onAnimationFinished(FloatingView.java:631)  at com.xlythe.view.floating.AnimationFinishedListener.onAnimationEnd(AnimationFinishedListener.java:21)  at android.view.ViewPropertyAnimator$AnimatorEventListener.onAnimationEnd(ViewPropertyAnimator.java:1116)  at android.animation.ValueAnimator.endAnimation(ValueAnimator.java:1089)  at android.animation.ValueAnimator$AnimationHandler.doAnimationFrame(ValueAnimator.java:666)  at android.animation.ValueAnimator$AnimationHandler.run(ValueAnimator.java:682)  at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)  at android.view.Choreographer.doCallbacks(Choreographer.java:580)  at android.view.Choreographer.doFrame(Choreographer.java:549)  at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)  at android.os.Handler.handleCallback(Handler.java:739)  at android.os.Handler.dispatchMessage(Handler.java:95)  at android.os.Looper.loop(Looper.java:135)  at android.app.ActivityThread.main(ActivityThread.java:5235)  at java.lang.reflect.Method.invoke(Native Method)  at java.lang.reflect.Method.invoke(Method.java:372)  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:898)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:693)  Caused by: java.lang.RuntimeException: Failed to resolve attribute at index 13 at android.content.res.TypedArray.getDrawable(TypedArray.java:747) at android.view.View.<init>(View.java:3731) at android.view.ViewGroup.<init>(ViewGroup.java:492)