diff --git a/app/src/main/java/io/legado/app/service/help/ReadBook.kt b/app/src/main/java/io/legado/app/service/help/ReadBook.kt
index 68b1601ac..50cadd655 100644
--- a/app/src/main/java/io/legado/app/service/help/ReadBook.kt
+++ b/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()
diff --git a/app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt b/app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt
index 90d559f8d..25d94bdea 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt
+++ b/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)
         }
     }
 
diff --git a/app/src/main/res/drawable/ic_launcher1_b.xml b/app/src/main/res/drawable/ic_launcher1_b.xml
index 559d07c34..c5b40eb91 100644
--- a/app/src/main/res/drawable/ic_launcher1_b.xml
+++ b/app/src/main/res/drawable/ic_launcher1_b.xml
@@ -7,49 +7,49 @@
   <path
       android:pathData="M0,0h108v108h-108z"
       android:fillColor="#4d4d4d" />
-  <path android:pathData="M0,108H54V65c0,-12 -54,-5 -54,-5Z">
+    <path android:pathData="M0,108H54V65c0,-12 -54,-5 -54,-5Z">
     <aapt:attr name="android:fillColor">
-      <gradient
+        <gradient
           android:startY="79.9"
           android:startX="0.62"
           android:endY="88.57"
           android:endX="53.06"
           android:type="linear">
-        <item
-            android:offset="0"
-            android:color="#FFFFFFFF" />
-        <item
-            android:offset="1"
-            android:color="#FFCCCCCC" />
+            <item
+                android:offset="0"
+                android:color="#FFFFFFFF" />
+            <item
+                android:offset="1"
+                android:color="#FFCCCCCC" />
       </gradient>
     </aapt:attr>
   </path>
   <path
       android:pathData="M108,108H54V65c0,-12 54,-5 54,-5Z"
-      android:fillColor="#fff" />
-  <path android:pathData="M71.5,69 L78,75V58a94.89,94.89 0,0 0,-13 0.75V75Z">
+      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
+        <gradient
           android:startY="58.1"
           android:startX="71.5"
           android:endY="75"
           android:endX="71.5"
           android:type="linear">
-        <item
-            android:offset="0"
-            android:color="#FFFFFFFF" />
-        <item
-            android:offset="0.24"
-            android:color="#FFFFE1DD" />
-        <item
-            android:offset="0.58"
-            android:color="#FFFFBEB6" />
-        <item
-            android:offset="0.84"
-            android:color="#FFFFA89D" />
-        <item
-            android:offset="1"
-            android:color="#FFFFA094" />
+            <item
+                android:offset="0"
+                android:color="#FFFFFFFF" />
+            <item
+                android:offset="0.24"
+                android:color="#FFFFE1DD" />
+            <item
+                android:offset="0.58"
+                android:color="#FFFFBEB6" />
+            <item
+                android:offset="0.84"
+                android:color="#FFFFA89D" />
+            <item
+                android:offset="1"
+                android:color="#FFFFA094" />
       </gradient>
     </aapt:attr>
   </path>
diff --git a/app/src/main/res/mipmap-hdpi/ic_launcher.png b/app/src/main/res/mipmap-hdpi/ic_launcher.png
index 0fe58e361..d2c418293 100644
Binary files a/app/src/main/res/mipmap-hdpi/ic_launcher.png and b/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/app/src/main/res/mipmap-mdpi/ic_launcher.png b/app/src/main/res/mipmap-mdpi/ic_launcher.png
index 59526eefd..2d18ac346 100644
Binary files a/app/src/main/res/mipmap-mdpi/ic_launcher.png and b/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/app/src/main/res/mipmap-xhdpi/ic_launcher.png
index 58b1e389a..4b44e0bba 100644
Binary files a/app/src/main/res/mipmap-xhdpi/ic_launcher.png and b/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
index ea95882bd..df9bfebb8 100644
Binary files a/app/src/main/res/mipmap-xxhdpi/ic_launcher.png and b/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
index fe1be3fde..6d101d806 100644
Binary files a/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png and b/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ