优化

app/src/main/java/io/legado/app/ui/main/explore/ExploreAdapter.kt

@@ -23,6 +23,7 @@ import io.legado.app.ui.widget.dialog.TextDialog
 import io.legado.app.utils.activity
 import io.legado.app.utils.dpToPx
 import io.legado.app.utils.gone
+import io.legado.app.utils.removeLastElement
 import io.legado.app.utils.showDialogFragment
 import io.legado.app.utils.startActivity
 import io.legado.app.utils.visible
@@ -118,9 +119,7 @@ class ExploreAdapter(context: Context, val callBack: CallBack) :
         return if (recycler.isEmpty()) {
             ItemFilletTextBinding.inflate(inflater, flexbox, false).root
         } else {
-            recycler.last().also {
+            recycler.removeLastElement() as TextView
-                recycler.removeLast()
-            } as TextView
         }
     }
 
@@ -174,11 +173,13 @@ class ExploreAdapter(context: Context, val callBack: CallBack) :
                     putExtra("type", "bookSource")
                     putExtra("key", source.bookSourceUrl)
                 }
+
                 R.id.menu_refresh -> Coroutine.async(callBack.scope) {
                     source.clearExploreKindsCache()
                 }.onSuccess {
                     notifyItemChanged(position)
                 }
+
                 R.id.menu_del -> callBack.deleteSource(source)
             }
             true

app/src/main/java/io/legado/app/utils/CollectionExtensions.kt

@@ -14,9 +14,16 @@ inline fun <T> List<T>.fastBinarySearch(
     comparison: (T) -> Int
 ): Int {
     when {
-        fromIndex > toIndex -> throw IllegalArgumentException("fromIndex ($fromIndex) is greater than toIndex ($toIndex).")
+        fromIndex > toIndex ->
-        fromIndex < 0 -> throw IndexOutOfBoundsException("fromIndex ($fromIndex) is less than zero.")
+            throw IllegalArgumentException(
-        toIndex > size -> throw IndexOutOfBoundsException("toIndex ($toIndex) is greater than size ($size).")
+                "fromIndex ($fromIndex) is greater than toIndex ($toIndex)."
+            )
+
+        fromIndex < 0 ->
+            throw IndexOutOfBoundsException("fromIndex ($fromIndex) is less than zero.")
+
+        toIndex > size ->
+            throw IndexOutOfBoundsException("toIndex ($toIndex) is greater than size ($size).")
     }
 
     var low = fromIndex
@@ -43,3 +50,11 @@ inline fun <T, K : Comparable<K>> List<T>.fastBinarySearchBy(
     toIndex: Int = size,
     crossinline selector: (T) -> K?
 ): Int = fastBinarySearch(fromIndex, toIndex) { compareValues(selector(it), key) }
+
+fun <T> MutableList<T>.removeLastElement(): T {
+    return if (isEmpty()) {
+        throw NoSuchElementException("List is empty.")
+    } else {
+        removeAt(lastIndex)
+    }
+}