diff --git a/adapter/src/main/kotlin/io/goooler/demoapp/adapter/rv/core/IVhModelWrapper.kt b/adapter/src/main/kotlin/io/goooler/demoapp/adapter/rv/core/IVhModelWrapper.kt
index e8ae1a72d..8ae60626e 100644
--- a/adapter/src/main/kotlin/io/goooler/demoapp/adapter/rv/core/IVhModelWrapper.kt
+++ b/adapter/src/main/kotlin/io/goooler/demoapp/adapter/rv/core/IVhModelWrapper.kt
@@ -19,5 +19,5 @@ interface IVhModelWrapper<M : IVhModelType> : IVhModelType {
   /**
    * As sub model list.
    */
-  val subList: List<M>
+  val subList: Iterable<M>
 }
diff --git a/adapter/src/main/kotlin/io/goooler/demoapp/adapter/rv/core/RvAdapterHelper.kt b/adapter/src/main/kotlin/io/goooler/demoapp/adapter/rv/core/RvAdapterHelper.kt
index e39adcb65..9eb57243e 100644
--- a/adapter/src/main/kotlin/io/goooler/demoapp/adapter/rv/core/RvAdapterHelper.kt
+++ b/adapter/src/main/kotlin/io/goooler/demoapp/adapter/rv/core/RvAdapterHelper.kt
@@ -7,7 +7,6 @@ import androidx.recyclerview.widget.GridLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import androidx.recyclerview.widget.StaggeredGridLayoutManager
 import io.goooler.demoapp.adapter.rv.core.ISpanSize.Companion.SPAN_SIZE_FULL
-import io.goooler.demoapp.adapter.rv.core.ISpanSize.Companion.SPAN_SIZE_SINGLE
 
 /**
  * Created on 2020/10/22.
@@ -127,7 +126,7 @@ internal class RvAdapterHelper<M : IVhModelType>(private val adapter: IRvAdapter
           (adapter[position] as? ISpanSize)?.spanSize?.let { size ->
             return if (size == SPAN_SIZE_FULL) it.spanCount else size
           }
-          return SPAN_SIZE_SINGLE
+          return it.spanCount
         }
       }
     }