[优化] 阅读书籍未下载时白屏问题

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

@@ -14,8 +14,6 @@ import io.legado.app.model.cache.CacheDownloadRequest
 import io.legado.app.model.cache.CacheDownloadSource
 import io.legado.app.model.cache.CacheDownloadStateStore
 import io.legado.app.model.cache.ChapterSelection
-import io.legado.app.model.cache.ReadingCacheEvent
-import io.legado.app.model.cache.ReadingCacheEvents
 import kotlinx.coroutines.CancellationException
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.CoroutineStart
@@ -616,14 +614,14 @@ class CacheBookModel(
         resetPageOffset: Boolean = false,
         canceled: Boolean = false
     ) {
-        ReadingCacheEvents.emit(
-            ReadingCacheEvent.ContentReady(
+        if (ReadBook.book?.bookUrl == book.bookUrl) {
+            ReadBook.contentLoadFinish(
                 book = book,
                 chapter = chapter,
                 content = content,
                 resetPageOffset = resetPageOffset,
                 canceled = canceled,
             )
-        )
+        }
     }
 }

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

@@ -26,8 +26,6 @@ import io.legado.app.help.config.ReadBookConfig
 import io.legado.app.help.coroutine.Coroutine
 import io.legado.app.help.globalExecutor
 import io.legado.app.model.localBook.TextFile
-import io.legado.app.model.cache.ReadingCacheEvent
-import io.legado.app.model.cache.ReadingCacheEvents
 import io.legado.app.model.webBook.WebBook
 import io.legado.app.service.BaseReadAloudService
 import io.legado.app.service.CacheBookService
@@ -90,26 +88,6 @@ object ReadBook : CoroutineScope by MainScope(), KoinComponent {
     private val nextChapterLoadingLock = Mutex()
     var readStartTime: Long = System.currentTimeMillis()
 
-    init {
-        launch {
-            ReadingCacheEvents.events.collect { event ->
-                when (event) {
-                    is ReadingCacheEvent.ContentReady -> {
-                        if (book?.bookUrl == event.book.bookUrl) {
-                            contentLoadFinish(
-                                book = event.book,
-                                chapter = event.chapter,
-                                content = event.content,
-                                resetPageOffset = event.resetPageOffset,
-                                canceled = event.canceled,
-                            )
-                        }
-                    }
-                }
-            }
-        }
-    }
-
     /* 跳转进度前进度记录 */
     var lastBookProgress: BookProgress? = null
 
@@ -686,7 +664,12 @@ object ReadBook : CoroutineScope by MainScope(), KoinComponent {
     ) {
         Coroutine.async {
             val book = book!!
-            val chapter = appDb.bookChapterDao.getChapter(book.bookUrl, index) ?: return@async
+            val chapter = appDb.bookChapterDao.getChapter(book.bookUrl, index) ?: run {
+                if (index == durChapterIndex) {
+                    upMsg("章节不存在")
+                }
+                return@async
+            }
             if (addLoading(index)) {
                 BookHelp.getContent(book, chapter)?.let {
                     contentLoadFinish(
@@ -704,7 +687,11 @@ object ReadBook : CoroutineScope by MainScope(), KoinComponent {
                 )
             }
         }.onError {
-            AppLog.put("加载正文出错\n${it.localizedMessage}")
+            removeLoading(index)
+            if (index == durChapterIndex) {
+                upMsg("加载正文出错\n${it.localizedMessage}")
+            }
+            AppLog.put("加载正文出错\n${it.localizedMessage}", it)
         }
     }
 

app/src/main/java/io/legado/app/model/cache/ReadingCacheEvents.kt

@@ -1,25 +0,0 @@
-package io.legado.app.model.cache
-
-import io.legado.app.data.entities.Book
-import io.legado.app.data.entities.BookChapter
-import kotlinx.coroutines.flow.MutableSharedFlow
-import kotlinx.coroutines.flow.asSharedFlow
-
-sealed interface ReadingCacheEvent {
-    data class ContentReady(
-        val book: Book,
-        val chapter: BookChapter,
-        val content: String,
-        val resetPageOffset: Boolean,
-        val canceled: Boolean,
-    ) : ReadingCacheEvent
-}
-
-object ReadingCacheEvents {
-    private val _events = MutableSharedFlow<ReadingCacheEvent>(extraBufferCapacity = 32)
-    val events = _events.asSharedFlow()
-
-    fun emit(event: ReadingCacheEvent) {
-        _events.tryEmit(event)
-    }
-}