From edd1368523105285bc15d3e75ca419fb44de0ca4 Mon Sep 17 00:00:00 2001
From: limuyang <limuyang2@hotmail.com>
Date: Mon, 18 Jul 2022 23:22:37 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E6=95=B4=E7=90=86=20EmptyView=20?=
 =?UTF-8?q?=E4=BB=A3=E7=A0=81?=
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---
 .../library/adapter/base/BaseQuickAdapter.kt  | 20 ++++++++++++-------
 .../adapter/base/viewholder/EmptyLayoutVH.kt  |  4 +++-
 2 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/library/src/main/java/com/chad/library/adapter/base/BaseQuickAdapter.kt b/library/src/main/java/com/chad/library/adapter/base/BaseQuickAdapter.kt
index 02e7b3d5c..7b6531c87 100644
--- a/library/src/main/java/com/chad/library/adapter/base/BaseQuickAdapter.kt
+++ b/library/src/main/java/com/chad/library/adapter/base/BaseQuickAdapter.kt
@@ -31,7 +31,7 @@ abstract class BaseQuickAdapter<T, VH : RecyclerView.ViewHolder>(
     /***************************** Public property settings *************************************/
 
     /** 是否使用空布局 */
-    var isUseEmpty = true
+    var isEmptyViewEnable = false
 
     /**
      * 是否打开动画
@@ -63,7 +63,7 @@ abstract class BaseQuickAdapter<T, VH : RecyclerView.ViewHolder>(
         }
 
     /********************************* Private property *****************************************/
-    internal var mLastPosition = -1
+    private var mLastPosition = -1
 
     private var mOnItemClickListener: OnItemClickListener<T>? = null
     private var mOnItemLongClickListener: OnItemLongClickListener<T>? = null
@@ -199,7 +199,7 @@ abstract class BaseQuickAdapter<T, VH : RecyclerView.ViewHolder>(
 
     final override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
         if (holder is EmptyLayoutVH) {
-            holder.changeEmptyView(emptyView!!)
+            holder.changeEmptyView(emptyView)
             return
         }
 
@@ -215,7 +215,7 @@ abstract class BaseQuickAdapter<T, VH : RecyclerView.ViewHolder>(
         }
 
         if (holder is EmptyLayoutVH) {
-            holder.changeEmptyView(emptyView!!)
+            holder.changeEmptyView(emptyView)
             return
         }
 
@@ -431,7 +431,7 @@ abstract class BaseQuickAdapter<T, VH : RecyclerView.ViewHolder>(
         set(value) {
             val oldDisplayEmptyLayout = displayEmptyView()
             field = value
-            isUseEmpty = true
+            isEmptyViewEnable = true
 
             val newDisplayEmptyLayout = displayEmptyView()
 
@@ -440,7 +440,7 @@ abstract class BaseQuickAdapter<T, VH : RecyclerView.ViewHolder>(
             } else if (newDisplayEmptyLayout && !oldDisplayEmptyLayout) {
                 notifyItemInserted(0)
             } else if (oldDisplayEmptyLayout && newDisplayEmptyLayout) {
-                notifyItemChanged(0, "")
+                notifyItemChanged(0, 1)
             }
         }
 
@@ -464,7 +464,7 @@ abstract class BaseQuickAdapter<T, VH : RecyclerView.ViewHolder>(
         if (emptyView == null) {
             return false
         }
-        if (!isUseEmpty) {
+        if (!isEmptyViewEnable) {
             return false
         }
         return items.isEmpty()
@@ -537,6 +537,7 @@ abstract class BaseQuickAdapter<T, VH : RecyclerView.ViewHolder>(
             return
         }
 
+
         this.items = list ?: emptyList()
         mLastPosition = -1
         notifyDataSetChanged()
@@ -627,6 +628,11 @@ abstract class BaseQuickAdapter<T, VH : RecyclerView.ViewHolder>(
             notifyItemRemoved(position)
         }
 
+        // 处理空视图的情况
+        if (displayEmptyView()) {
+            notifyItemInserted(0)
+        }
+
 //        compatibilityDataSizeChanged(0)
 //        notifyItemRangeChanged(position, this.data.size - position)
     }
diff --git a/library/src/main/java/com/chad/library/adapter/base/viewholder/EmptyLayoutVH.kt b/library/src/main/java/com/chad/library/adapter/base/viewholder/EmptyLayoutVH.kt
index 3fbb1cace..aefeac2a3 100644
--- a/library/src/main/java/com/chad/library/adapter/base/viewholder/EmptyLayoutVH.kt
+++ b/library/src/main/java/com/chad/library/adapter/base/viewholder/EmptyLayoutVH.kt
@@ -7,7 +7,9 @@ import android.widget.FrameLayout
 import androidx.recyclerview.widget.RecyclerView
 
 internal class EmptyLayoutVH(private val emptyLayout:FrameLayout ): RecyclerView.ViewHolder(emptyLayout) {
-    fun changeEmptyView(view: View) {
+    fun changeEmptyView(view: View?) {
+        if (view == null) return
+
         val emptyLayoutVp: ViewParent? = view.parent
         if (emptyLayoutVp is ViewGroup) {
             emptyLayoutVp.removeView(view)