优化

app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt

@@ -55,6 +55,7 @@ class BookInfoActivity :
             viewModel.bookData.value?.let { book ->
                 launch {
                     withContext(IO) {
+                        viewModel.durChapterIndex = it.first
                         book.durChapterIndex = it.first
                         book.durChapterPos = it.second
                         appDb.bookDao.update(book)
@@ -75,6 +76,7 @@ class BookInfoActivity :
     private val readBookResult = registerForActivityResult(
         ActivityResultContracts.StartActivityForResult()
     ) {
+        viewModel.refreshData(intent)
         if (it.resultCode == RESULT_OK) {
             viewModel.inBookshelf = true
             upTvBookshelf()

app/src/main/java/io/legado/app/ui/book/info/BookInfoViewModel.kt

@@ -35,6 +35,16 @@ class BookInfoViewModel(application: Application) : BaseViewModel(application) {
         }
     }
 
+    fun refreshData(intent: Intent) {
+        execute {
+            val name = intent.getStringExtra("name") ?: ""
+            val author = intent.getStringExtra("author") ?: ""
+            appDb.bookDao.getBook(name, author)?.let { book ->
+                setBook(book)
+            }
+        }
+    }
+
     private fun setBook(book: Book) {
         durChapterIndex = book.durChapterIndex
         bookData.postValue(book)