feat: 优化代码

app/src/main/AndroidManifest.xml

@@ -79,6 +79,20 @@
                 android:resource="@xml/shortcuts"
                 android:launchMode="singleTask" />
         </activity>
+        <!--图标4-->
+        <activity
+            android:name=".ui.welcome.Launcher4"
+            android:icon="@mipmap/launcher4"
+            android:enabled="false">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+            <meta-data
+                android:name="android.app.shortcuts"
+                android:resource="@xml/shortcuts"
+                android:launchMode="singleTask" />
+        </activity>
         <!--主界面-->
         <activity
             android:name=".ui.main.MainActivity"

app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt

@@ -58,4 +58,5 @@ open class WelcomeActivity : BaseActivity(R.layout.activity_welcome) {
 
 class Launcher1 : WelcomeActivity()
 class Launcher2 : WelcomeActivity()
-class Launcher3 : WelcomeActivity()
+class Launcher3 : WelcomeActivity()
+class Launcher4 : WelcomeActivity()

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

@@ -4,9 +4,9 @@
     android:viewportWidth="24"
     android:viewportHeight="24">
     <path
-        android:pathData="M18,3H6C4.9,3 4,3.9 4,5v15.1C4,20.6 4.4,21 4.9,21c0.1,0 0.2,0 0.3,0l5.7,-2.3c0.4,-0.1 0.7,-0.2 1.1,-0.2s0.8,0.1 1.1,0.2l5.7,2.3c0.1,0 0.2,0 0.3,0c0.5,0 0.9,-0.4 0.9,-0.9V5C20,3.9 19.1,3 18,3zM18.4,19.1l-4.7,-1.9l0,0l0,0c-0.5,-0.2 -1.1,-0.3 -1.6,-0.3s-1.1,0.1 -1.6,0.3l0,0l0,0l-4.7,1.9V5c0,-0.2 0.2,-0.4 0.4,-0.4h12c0.2,0 0.4,0.2 0.4,0.4V19.1z"
+        android:pathData="M18,3H6C4.9,3 4,3.9 4,5v15.1C4,20.6 4.4,21 4.9,21c0.1,0 0.2,0 0.3,0l5.7,-2.3c0.4,-0.1 0.7,-0.2 1.1,-0.2s0.8,0.1 1.1,0.2l5.7,2.3c0.1,0 0.2,0 0.3,0c0.5,0 0.9,-0.4 0.9,-0.9V5C20,3.9 19.1,3 18,3zM18.2,19.1l-4.7,-1.9l0,0l0,0c-0.5,-0.2 -1.1,-0.3 -1.6,-0.3s-1.1,0.1 -1.6,0.3l0,0l0,0l-4.7,1.9V5c0,-0.2 0.2,-0.4 0.4,-0.4H18c0.2,0 0.4,0.2 0.4,0.4v14.1H18.2z"
         android:fillColor="#5A5F64" />
     <path
-        android:pathData="M14.9,9.5h-2.2V7.2c0,-0.4 -0.4,-0.8 -0.8,-0.8c-0.4,0 -0.8,0.4 -0.8,0.8v2.3H9.1c-0.4,0 -0.8,0.4 -0.8,0.8c0,0.4 0.4,0.8 0.8,0.8h2.2v2.3c0,0.4 0.4,0.8 0.8,0.8c0.4,0 0.8,-0.4 0.8,-0.8v-2.3h2.2c0.4,0 0.8,-0.4 0.8,-0.8C15.7,9.9 15.4,9.5 14.9,9.5L14.9,9.5z"
+        android:pathData="M14.9,9.5h-2.2V7.2c0,-0.4 -0.4,-0.8 -0.8,-0.8c-0.4,0 -0.8,0.4 -0.8,0.8v2.3h-2c-0.4,0 -0.8,0.4 -0.8,0.8c0,0.4 0.4,0.8 0.8,0.8h2.2v2.3c0,0.4 0.4,0.8 0.8,0.8c0.4,0 0.8,-0.4 0.8,-0.8v-2.3h2.2c0.4,0 0.8,-0.4 0.8,-0.8C15.7,9.9 15.4,9.5 14.9,9.5L14.9,9.5z"
         android:fillColor="#5A5F64" />
-</vector>
+</vector>

app/src/main/res/drawable/ic_launch.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="M18.545,18.304c0,0.131-0.11,0.242-0.241,0.242H5.696c-0.131,0-0.242-0.111-0.242-0.242V5.697 c0-0.131,0.111-0.243,0.242-0.243H12V4H5.696C4.76,4,4,4.762,4,5.697v12.606C4,19.239,4.76,20,5.696,20h12.607 C19.239,20,20,19.239,20,18.304v-6.303h-1.455V18.304z" />
-    <path
-        android:fillColor="#595757"
-        android:pathData="M 19.272 4 L 13.843 4 L 13.843 5.454 L 17.517 5.454 L 7.464 15.508 L 8.491 16.536 L 18.545 6.482 L 18.545 10.157 L 20 10.157 L 20 4.727 L 20 4 Z" />
-</vector>

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

@@ -0,0 +1,18 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:pathData="M50.8,56.9c-0.2,2.4 -2.4,4.2 -4.8,4c-1.2,-0.1 -2.3,-0.7 -3.1,-1.7l8.8,-5.1l0,0l0.5,-0.3c-0.1,-0.2 -0.2,-0.4 -0.3,-0.6c-1.8,-3.1 -5.7,-4.1 -8.7,-2.3c-3.1,1.8 -4.1,5.7 -2.3,8.7c1.8,3.1 5.7,4.1 8.7,2.3c1.8,-1.1 3,-3 3.2,-5.1H50.8zM44.1,52.6c1.7,-1 3.9,-0.7 5.3,0.6L42,57.5C41.6,55.6 42.4,53.6 44.1,52.6z"
+        android:fillColor="#333333" />
+    <path
+        android:pathData="M34.1,55c2.7,-0.6 4.4,-3.4 3.8,-6.1C37.4,46.6 35.4,45 33,45h-7v17.8h1.9V46.9H33c1.8,0 3.1,1.5 3.1,3.3c0,1.6 -1.3,3 -2.9,3.1h-2.1l5.1,9.5h2.2L34.1,55z"
+        android:fillColor="#2F45A6" />
+    <path
+        android:pathData="M61,50.1c-3.5,0.1 -6.3,3.1 -6.1,6.6c0.1,3.3 2.8,6 6.1,6.1h3.2v-1.9H61c-2.5,0 -4.5,-2 -4.5,-4.4c0,-2.5 2,-4.5 4.4,-4.5c2.5,0 4.5,2 4.5,4.4c0,0 0,0 0,0v6.4h1.9v-6.4C67.4,52.9 64.5,50.1 61,50.1L61,50.1z"
+        android:fillColor="#333333" />
+    <path
+        android:pathData="M80.1,45v11.5c0,2.5 -2,4.5 -4.5,4.5c-2.5,0 -4.5,-2 -4.5,-4.5c0,-2.5 2,-4.5 4.4,-4.5c0,0 0,0 0,0h3.2v-1.9h-3.2c-3.5,0 -6.4,2.8 -6.4,6.4c0,3.5 2.8,6.4 6.4,6.4c1.7,0 3.3,-0.7 4.5,-1.8v1.8H82V45H80.1z"
+        android:fillColor="#333333" />
+</vector>

app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
     <background android:drawable="@color/md_grey_100" />
-    <foreground android:drawable="@drawable/ic_launcher_0" />
+    <foreground android:drawable="@drawable/ic_launcher" />
 </adaptive-icon>

app/src/main/res/mipmap-anydpi-v26/launcher4.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/md_grey_100" />
+    <foreground android:drawable="@drawable/ic_launcher_4" />
+</adaptive-icon>