优化

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

@@ -68,14 +68,13 @@ object CacheBook {
         }
     }
 
-    fun start(context: Context, book: Book, start: Int, end: Int, startDownload: Boolean = true) {
+    fun start(context: Context, book: Book, start: Int, end: Int) {
         if (!book.isLocal) {
             context.startService<CacheBookService> {
                 action = IntentAction.start
                 putExtra("bookUrl", book.bookUrl)
                 putExtra("start", start)
                 putExtra("end", end)
-                putExtra("startDownload", startDownload)
             }
         }
     }

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

@@ -80,8 +80,7 @@ class CacheBookService : BaseService() {
                 IntentAction.start -> addDownloadData(
                     intent.getStringExtra("bookUrl"),
                     intent.getIntExtra("start", 0),
-                    intent.getIntExtra("end", 0),
-                    intent.getBooleanExtra("startDownload", true)
+                    intent.getIntExtra("end", 0)
                 )
 
                 IntentAction.remove -> removeDownload(intent.getStringExtra("bookUrl"))
@@ -99,7 +98,7 @@ class CacheBookService : BaseService() {
         postEvent(EventBus.UP_DOWNLOAD, "")
     }
 
-    private fun addDownloadData(bookUrl: String?, start: Int, end: Int, startDownload: Boolean) {
+    private fun addDownloadData(bookUrl: String?, start: Int, end: Int) {
         bookUrl ?: return
         execute {
             val cacheBook = CacheBook.getOrCreate(bookUrl) ?: return@execute

app/src/main/java/io/legado/app/ui/book/cache/CacheActivity.kt

@@ -158,14 +158,12 @@ class CacheActivity : VMBaseActivity<ActivityCacheBookBinding, CacheViewModel>()
         when (item.itemId) {
             R.id.menu_download -> {
                 if (!CacheBook.isRun) {
-                    val lastIndex = adapter.itemCount - 1
-                    adapter.getItems().forEachIndexed { index, book ->
+                    adapter.getItems().forEach { book ->
                         CacheBook.start(
                             this@CacheActivity,
                             book,
                             book.durChapterIndex,
-                            book.lastChapterIndex,
-                            index == lastIndex
+                            book.lastChapterIndex
                         )
                     }
                 } else {