优化

app/src/main/java/io/legado/app/help/BookHelp.kt

@@ -251,9 +251,6 @@ object BookHelp {
      * 删除章节内容
      */
     fun delContent(book: Book, bookChapter: BookChapter) {
-        if (book.isLocalTxt()) {
-            return
-        } else {
         FileUtils.createFileIfNotExist(
             downloadDir,
             cacheFolderName,
@@ -261,7 +258,6 @@ object BookHelp {
             bookChapter.getFileName()
         ).delete()
     }
-    }
 
     /**
      * 格式化书名

app/src/main/java/io/legado/app/model/localBook/LocalBook.kt

@@ -162,6 +162,7 @@ object LocalBook {
 
     fun deleteBook(book: Book, deleteOriginal: Boolean) {
         kotlin.runCatching {
+            BookHelp.clearCache(book)
             if (deleteOriginal) {
                 if (book.bookUrl.isContentScheme()) {
                     val uri = Uri.parse(book.bookUrl)