feat: 优化代码

app/src/main/java/io/legado/app/ui/changesource/ChangeSourceAdapter.kt

@@ -1,6 +1,7 @@
 package io.legado.app.ui.changesource
 
 import android.content.Context
+import android.os.Bundle
 import io.legado.app.R
 import io.legado.app.base.adapter.ItemViewHolder
 import io.legado.app.base.adapter.SimpleRecyclerAdapter
@@ -15,8 +16,9 @@ class ChangeSourceAdapter(context: Context, val callBack: CallBack) :
     SimpleRecyclerAdapter<SearchBook>(context, R.layout.item_change_source) {
 
     override fun convert(holder: ItemViewHolder, item: SearchBook, payloads: MutableList<Any>) {
+        val bundle = payloads.getOrNull(0) as? Bundle
         holder.itemView.apply {
-            if (payloads.isEmpty()) {
+            if (bundle == null) {
                 this.onClick { callBack.changeTo(item) }
                 tv_origin.text = item.originName
                 tv_last.text = item.getDisplayLastChapterTitle()
@@ -26,8 +28,12 @@ class ChangeSourceAdapter(context: Context, val callBack: CallBack) :
                     iv_checked.invisible()
                 }
             } else {
-                tv_origin.text = item.originName
+                bundle.keySet().map {
-                tv_last.text = item.getDisplayLastChapterTitle()
+                    when (it) {
+                        "name" -> tv_origin.text = item.originName
+                        "latest" -> tv_last.text = item.getDisplayLastChapterTitle()
+                    }
+                }
             }
         }
     }

app/src/main/java/io/legado/app/ui/changesource/DiffCallBack.kt

@@ -1,16 +1,12 @@
 package io.legado.app.ui.changesource
 
+import android.os.Bundle
 import androidx.recyclerview.widget.DiffUtil
 import io.legado.app.data.entities.SearchBook
 
 class DiffCallBack(private val oldItems: List<SearchBook>, private val newItems: List<SearchBook>) :
     DiffUtil.Callback() {
 
-
-    override fun areItemsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
-        return oldItems[oldItemPosition].bookUrl == newItems[newItemPosition].bookUrl
-    }
-
     override fun getOldListSize(): Int {
         return oldItems.size
     }
@@ -19,18 +15,38 @@ class DiffCallBack(private val oldItems: List<SearchBook>, private val newItems:
         return newItems.size
     }
 
+    override fun areItemsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
+        val oldItem = oldItems[oldItemPosition]
+        val newItem = newItems[newItemPosition]
+        return oldItem.bookUrl == newItem.bookUrl
+    }
+
     override fun areContentsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
-        return oldItems[oldItemPosition].originName == newItems[newItemPosition].originName
+        val oldItem = oldItems[oldItemPosition]
-                && oldItems[oldItemPosition].latestChapterTitle == newItems[newItemPosition].latestChapterTitle
+        val newItem = newItems[newItemPosition]
+        if (oldItem.originName != newItem.originName) {
+            return false
+        }
+        if (oldItem.latestChapterTitle != newItem.latestChapterTitle) {
+            return false
+        }
+        return true
     }
 
     override fun getChangePayload(oldItemPosition: Int, newItemPosition: Int): Any? {
         val oldItem = oldItems[oldItemPosition]
         val newItem = newItems[newItemPosition]
-        if (oldItem.originName != newItem.originName || oldItem.latestChapterTitle != newItem.latestChapterTitle) {
+        val payload = Bundle()
-            return true
+        if (oldItem.originName != newItem.originName) {
+            payload.putString("name", newItem.originName)
         }
+        if (oldItem.latestChapterTitle != newItem.latestChapterTitle) {
+            payload.putString("latest", newItem.latestChapterTitle)
+        }
+        if (payload.isEmpty) {
             return null
         }
+        return payload
+    }
 
 }