feat: 优化代码

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

@@ -33,7 +33,7 @@ object ReadBook {
     var curTextChapter: TextChapter? = null
     var nextTextChapter: TextChapter? = null
     var webBook: WebBook? = null
-    var msg: String? = null
+    private var msg: String? = null
     private val loadingChapters = arrayListOf<Int>()
 
     fun resetData(book: Book, noSource: (name: String, author: String) -> Unit) {
@@ -64,6 +64,11 @@ object ReadBook {
         }
     }
 
+    fun upMsg(msg: String?) {
+        this.msg = msg
+        callBack?.upContent()
+    }
+
     fun moveToNextPage() {
         durPageIndex++
         callBack?.upContent()

app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt

@@ -117,15 +117,16 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
                                 App.db.bookChapterDao().insert(*cList.toTypedArray())
                                 App.db.bookDao().update(book)
                                 ReadBook.chapterSize = cList.size
+                                ReadBook.upMsg(null)
                                 ReadBook.loadContent(resetPageOffset = true)
                             } else {
                                 changeDruChapterIndex(cList)
                             }
                         } else {
-                            toast(R.string.error_load_toc)
+                            ReadBook.upMsg(context.getString(R.string.error_load_toc))
                         }
                     }?.onError {
-                        toast(R.string.error_load_toc)
+                        ReadBook.upMsg(context.getString(R.string.error_load_toc))
                     }
             }
         }
@@ -133,6 +134,7 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
 
     fun changeTo(book1: Book) {
         execute {
+            ReadBook.upMsg(null)
             ReadBook.book?.let {
                 App.db.bookDao().delete(it)
             }
@@ -171,11 +173,9 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
                 }
             }
         }.onStart {
-            ReadBook.msg = "正在自动换源"
-            ReadBook.callBack?.upContent()
+            ReadBook.upMsg("正在自动换源")
         }.onFinally {
-            ReadBook.msg = null
-            ReadBook.callBack?.upContent()
+            ReadBook.upMsg(null)
         }
     }
 

app/src/main/res/drawable/ic_launcher1_b.xml

@@ -26,7 +26,7 @@
   </path>
   <path
       android:pathData="M108,108H54V65c0,-12 54,-5 54,-5Z"
-      android:fillColor="#fff" />
+      android:fillColor="#f2f2f2" />
     <path android:pathData="M71.5,69 L78,75V58a94.89,94.89 0,0 0,-13 0.75V75Z">
     <aapt:attr name="android:fillColor">
         <gradient