Add commit about itemViewType.

Xigong93 · Jan 17, 2021 · b126fba · b126fba
1 parent b7ee5de
commit b126fba
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/...bleRecyclerView/src/main/java/pokercc/android/expandablerecyclerview/ExpandableAdapter.kt b/...bleRecyclerView/src/main/java/pokercc/android/expandablerecyclerview/ExpandableAdapter.kt
@@ -236,10 +236,22 @@ abstract class ExpandableAdapter<VH : ExpandableAdapter.ViewHolder> : RecyclerVi
  }
  }
 
+ /**
+ * Must be positive .
+ * See also [isGroup]
+ */
  open fun getGroupItemViewType(groupPosition: Int): Int = 1
 
+ /**
+ * Must be negative or zero .
+ * See also [isGroup]
+ */
  open fun getChildItemViewType(groupPosition: Int, childPosition: Int): Int = -1
 
+ /**
+ * Distinguish group item or child item by viewType.
+ * By default groupViewType is positive , childViewType is negative or zero.
+ */
  open fun isGroup(viewType: Int): Boolean = viewType > 0
 
  final override fun onBindViewHolder(viewHolder: VH, position: Int) = Unit