优化

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

@@ -1,14 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="24"
-    android:viewportHeight="24">
-
-    <path
-        android:fillColor="#595757"
-        android:pathData="M12,4c-4.412,0-8,3.588-8,8s3.588,8,8,8c4.41,0,8-3.588,8-8S16.41,4,12,4z M12,18.545 c-3.608,0-6.546-2.936-6.546-6.545S8.392,5.455,12,5.455c3.607,0,6.545,2.936,6.545,6.545S15.607,18.545,12,18.545z" />
-    <path
-        android:fillColor="#595757"
-        android:pathData="M 13.426 9.546 L 12.002 10.972 L 10.576 9.546 L 9.547 10.575 L 10.973 12 L 9.547 13.425 L 10.576 14.454 L 12.002 13.028 L 13.426 14.454 L 14.454 13.425 L 13.029 12 L 14.454 10.575 Z" />
-</vector>

app/src/main/res/menu/read_book.xml

@@ -7,7 +7,8 @@
         android:id="@+id/menu_add_bookmark"
         android:icon="@drawable/ic_bookmark"
         android:title="@string/bookmark_add"
-        app:showAsAction="ifRoom" />
+        app:showAsAction="always"
+        tools:ignore="AlwaysShowAction" />
 
     <group android:id="@+id/menu_group_on_line">
         <item
@@ -20,17 +21,15 @@
             android:id="@+id/menu_refresh"
             android:icon="@drawable/ic_refresh_black_24dp"
             android:title="@string/refresh"
-            app:showAsAction="ifRoom" />
+            app:showAsAction="always" />
 
         <item
             android:id="@+id/menu_download"
-            android:icon="@drawable/ic_download_line"
             android:title="@string/offline_cache"
             app:showAsAction="never" />
 
         <item
             android:id="@+id/menu_disable_book_source"
-            android:icon="@drawable/ic_cancel"
             android:title="@string/disable_book_source"
             app:showAsAction="never" />
 
@@ -39,7 +38,6 @@
     <group android:id="@+id/menu_group_login">
         <item
             android:id="@+id/menu_login"
-            android:icon="@drawable/ic_toc"
             android:visible="false"
             android:title="@string/login"
             app:showAsAction="never" />
@@ -60,25 +58,22 @@
             android:id="@+id/menu_set_charset"
             android:icon="@drawable/ic_translate"
             android:title="@string/set_charset"
-            app:showAsAction="ifRoom" />
+            app:showAsAction="always" />
 
     </group>
 
     <item
         android:id="@+id/menu_copy_text"
-        android:icon="@drawable/ic_copy"
         android:title="@string/copy_text"
-        app:showAsAction="ifRoom" />
+        app:showAsAction="never" />
 
     <item
         android:id="@+id/menu_page_anim"
-        android:icon="@drawable/ic_auto_page"
         android:title="@string/page_anim"
         app:showAsAction="never" />
 
     <item
         android:id="@+id/menu_enable_replace"
-        android:icon="@drawable/ic_find_replace"
         android:title="@string/replace_rule_title"
         android:checkable="true"
         android:checked="true"
@@ -86,7 +81,6 @@
 
     <item
         android:id="@+id/menu_re_segment"
-        android:icon="@drawable/ic_toc"
         android:title="@string/re_segment"
         android:checkable="true"
         android:checked="false"
@@ -94,13 +88,11 @@
 
     <item
         android:id="@+id/menu_update_toc"
-        android:icon="@drawable/ic_update"
         android:title="@string/update_toc"
         app:showAsAction="never" />
 
     <item
         android:id="@+id/menu_book_info"
-        android:icon="@drawable/ic_toc"
         android:title="@string/book_info"
         app:showAsAction="never" />