feat: 优化代码

app/src/main/java/io/legado/app/constant/IntentAction.kt

@@ -17,4 +17,5 @@ object IntentAction {
     const val next = "next"
     const val moveTo = "moveTo"
     const val init = "init"
+    const val remove = "remove"
 }

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

@@ -58,6 +58,7 @@ class DownloadService : BaseService() {
                     intent.getIntExtra("start", 0),
                     intent.getIntExtra("end", 0)
                 )
+                IntentAction.remove -> removeDownload(intent.getStringExtra("bookUrl"))
                 IntentAction.stop -> stopDownload()
             }
         }
@@ -91,6 +92,11 @@ class DownloadService : BaseService() {
         }
     }
 
+    private fun removeDownload(bookUrl: String?) {
+        downloadMap.remove(bookUrl)
+        finalMap.remove(bookUrl)
+    }
+
     private fun download() {
         val task = Coroutine.async(this, context = searchPool) {
             downloadMap.forEach { entry ->
@@ -102,8 +108,14 @@ class DownloadService : BaseService() {
                     val webBook = WebBook(bookSource)
                     entry.value.forEach { chapter ->
                         if (!isActive) return@async
+                        if (downloadMap.containsKey(book.bookUrl)) {
                             if (!BookHelp.hasContent(book, chapter)) {
-                            webBook.getContent(book, chapter, scope = this, context = searchPool)
+                                webBook.getContent(
+                                    book,
+                                    chapter,
+                                    scope = this,
+                                    context = searchPool
+                                )
                                     .onStart {
                                         notificationContent = chapter.title
                                     }
@@ -129,6 +141,7 @@ class DownloadService : BaseService() {
                             }
                         }
                     }
+                }
 
             }
         }

app/src/main/java/io/legado/app/service/help/Download.kt

@@ -17,6 +17,14 @@ object Download {
         }
     }
 
+    fun remove(context: Context, bookUrl: String) {
+        Intent(context, DownloadService::class.java).let {
+            it.action = IntentAction.remove
+            it.putExtra("bookUrl", bookUrl)
+            context.startService(it)
+        }
+    }
+
     fun stop(context: Context) {
         Intent(context, DownloadService::class.java).let {
             it.action = IntentAction.stop

app/src/main/java/io/legado/app/ui/download/DownloadAdapter.kt

@@ -45,9 +45,13 @@ class DownloadAdapter(context: Context, private val callBack: CallBack) :
         holder.itemView.apply {
             iv_download.onClick {
                 getItem(holder.layoutPosition)?.let {
+                    if (downloadMap?.containsKey(it.bookUrl) == true) {
+                        Download.remove(context, it.bookUrl)
+                    } else {
                         Download.start(context, it.bookUrl, 0, it.totalChapterNum)
                     }
                 }
+            }
             tv_export.onClick {
                 getItem(holder.layoutPosition)?.let {
                     val cacheSize = cacheChapters[it.bookUrl]?.size ?: 0