订阅源增加全屏显示

感谢 @niu-hb
Source: https://github.com/gedoor/legado/pull/5373/commits/76ce4b89a65c688e8a6232c4cb247bdbabbf33af

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

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:tint="?attr/colorControlNormal"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M120,840L120,640L200,640L200,760L320,760L320,840L120,840ZM640,840L640,760L760,760L760,640L840,640L840,840L640,840ZM120,320L120,120L320,120L320,200L200,200L200,320L120,320ZM760,320L760,200L640,200L640,120L840,120L840,320L760,320Z" />
+</vector>

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

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">
     <item
         android:id="@+id/menu_rss_refresh"
         android:title="@string/refresh"
@@ -13,6 +14,13 @@
         android:icon="@drawable/ic_star"
         app:showAsAction="always" />
 
+    <item
+        android:id="@+id/menu_full_screen"
+        android:icon="@drawable/ic_fullscreen"
+        android:title="@string/full_screen"
+        app:showAsAction="always"
+        tools:ignore="AlwaysShowAction" />
+
     <item
         android:id="@+id/menu_share_it"
         android:title="@string/share"