优化

app/src/main/java/io/legado/app/model/CacheBook.kt

@@ -191,7 +191,7 @@ object CacheBook {
         private val tasks = CompositeCoroutine()
         private var isStopped = false
         private var waitingRetry = false
-        private var isLoading = true
+        private var isLoading = false
 
         val waitCount get() = waitDownloadSet.size
         val onDownloadCount get() = onDownloadSet.size
@@ -215,11 +215,17 @@ object CacheBook {
             return isLoading
         }
 
+        @Synchronized
+        fun setLoading() {
+            isLoading = true
+        }
+
         @Synchronized
         fun stop() {
             waitDownloadSet.clear()
             tasks.clear()
             isStopped = true
+            isLoading = false
             postEvent(EventBus.UP_DOWNLOAD, book.bookUrl)
         }
 

app/src/main/java/io/legado/app/service/CacheBookService.kt

@@ -106,12 +106,14 @@ class CacheBookService : BaseService() {
             val chapterCount = appDb.bookChapterDao.getChapterCount(bookUrl)
             val book = cacheBook.book
             if (chapterCount == 0) {
+                cacheBook.setLoading()
                 mutex.withLock {
                     val name = book.name
                     if (book.tocUrl.isEmpty()) {
                         kotlin.runCatching {
                             WebBook.getBookInfoAwait(cacheBook.bookSource, book)
                         }.onFailure {
+                            removeDownload(bookUrl)
                             val msg = "《$name》目录为空且加载详情页失败\n${it.localizedMessage}"
                             AppLog.put(msg, it, true)
                             return@execute
@@ -122,6 +124,7 @@ class CacheBookService : BaseService() {
                             book.totalChapterNum = 0
                             book.update()
                         }
+                        removeDownload(bookUrl)
                         val msg = "《$name》目录为空且加载目录失败\n${it.localizedMessage}"
                         AppLog.put(msg, it, true)
                         return@execute