优化应用图标质量，在高版本系统上使用矢量图标

android/app/src/main/res/drawable/ic_launcher_foreground.xml

@@ -0,0 +1,17 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="447.94"
+    android:viewportHeight="447.94">
+  <group android:scaleX="0.48"
+      android:scaleY="0.48"
+      android:translateX="116.4644"
+      android:translateY="116.4644">
+    <path
+        android:pathData="M203.81,0.48c-19.67,-3.35 -35.76,11.14 -35.76,31.09v206.17c-11.64,-4.27 -24.17,-6.72 -37.28,-6.72c-59.9,0 -108.47,48.57 -108.47,108.47c0,59.9 48.56,108.46 108.47,108.46c34.14,0 64.54,-15.82 84.41,-40.48l-49.66,-49.66c-15.12,-15.11 -11.71,-28.9 -9.54,-34.14c2.17,-5.23 9.51,-17.4 30.88,-17.4h18.08v-56.88c0,-21.13 14.62,-38.86 34.27,-43.74c0.03,-44.37 0.03,-81.81 0.03,-81.81c140.15,0 131.72,83.97 115.32,132.2c-6.42,18.88 -2.6,22.05 10.89,7.35C536.47,77.11 298.38,16.57 203.81,0.48z"
+        android:fillColor="#5ed698"/>
+    <path
+        android:pathData="M301.06,223.88h-50.99c-3.91,0 -7.57,0.95 -10.89,2.52c-8.62,4.09 -14.61,12.8 -14.61,22.97v76.51h-37.71c-14.08,0 -17.43,8.07 -7.47,18.03l46.89,46.9l31.25,31.25c4.98,4.99 11.51,7.47 18.03,7.47c6.52,0 13.05,-2.48 18.03,-7.47l78.15,-78.14c9.95,-9.96 6.61,-18.03 -7.47,-18.03h-37.71v-76.51C326.57,235.29 315.15,223.88 301.06,223.88z"
+        android:fillColor="#4daf7c"/>
+  </group>
+</vector>

android/app/src/main/res/mipmap-anydpi-v26/ic_launcher.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/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>

android/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.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/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>

android/app/src/main/res/values/ic_launcher_background.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#FFFFFF</color>
+</resources>

publish/changeLog.md

@@ -15,6 +15,7 @@
 - 首次使用的提示窗口可以通过点击背景或者返回键关闭（#577）
 - 上移 Toast 位置避免遮挡播放模式图标（#603, @sibojia）
 - 优化简体中文文案编排，大幅修订英语文案编排（#658, #660 等, @3gf8jv4dv）
+- 优化应用图标质量，在高版本系统上使用矢量图标
 
 ### 修复