Update app icon.

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

@@ -0,0 +1,24 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="96"
+    android:viewportHeight="109">
+  <group android:scaleX="0.43155962"
+      android:scaleY="0.49"
+      android:translateX="27.285137"
+      android:translateY="27.795">
+    <path
+        android:pathData="M0,0h96v109h-96z"
+        android:fillColor="#ffffff"/>
+    <path
+        android:pathData="M7.64,4H87.64V18H7.64V4Z"
+        android:fillColor="#ADE2FF"/>
+    <path
+        android:pathData="M8,50C8,45.58 11.58,42 16,42H80C84.42,42 88,45.58 88,50V87C88,94.73 81.73,101 74,101H22C14.27,101 8,94.73 8,87V50Z"
+        android:fillColor="#ADE2FF"/>
+    <path
+        android:pathData="M5.64,1.28C6.46,0.46 7.57,0 8.73,0H87.27C88.43,0 89.54,0.46 90.36,1.28C91.18,2.09 91.64,3.2 91.64,4.36V17.44C91.64,18.6 91.18,19.71 90.36,20.52C89.54,21.34 88.43,21.8 87.27,21.8H8.73C7.57,21.8 6.46,21.34 5.64,20.52C4.82,19.71 4.36,18.6 4.36,17.44V4.36C4.36,3.2 4.82,2.09 5.64,1.28ZM87.27,4.36L8.73,4.36V17.44L87.27,17.44V4.36ZM10.91,22.89C12.11,22.89 13.09,23.87 13.09,25.07C13.09,28.59 12.5,31.28 11.55,33.48C10.6,35.67 9.34,37.26 8.21,38.6C8.04,38.8 7.88,39 7.72,39.19C6.78,40.28 6.04,41.16 5.46,42.22C4.82,43.37 4.36,44.78 4.36,46.87V87.2C4.36,91.83 6.2,96.26 9.48,99.53C12.75,102.8 17.19,104.64 21.82,104.64H74.18C78.81,104.64 83.25,102.8 86.52,99.53C89.8,96.26 91.64,91.83 91.64,87.2V46.87C91.64,44.78 91.18,43.37 90.54,42.22C89.96,41.16 89.22,40.28 88.28,39.19C88.12,39 87.96,38.8 87.79,38.6C86.66,37.26 85.4,35.67 84.45,33.48C83.5,31.28 82.91,28.59 82.91,25.07C82.91,23.87 83.89,22.89 85.09,22.89C86.3,22.89 87.27,23.87 87.27,25.07C87.27,28.09 87.77,30.17 88.46,31.75C89.15,33.34 90.07,34.54 91.12,35.79C91.27,35.96 91.41,36.13 91.56,36.31C92.49,37.39 93.55,38.63 94.36,40.11C95.36,41.92 96,44.06 96,46.87V87.2C96,92.98 93.7,98.53 89.61,102.61C85.52,106.7 79.97,109 74.18,109H21.82C16.03,109 10.48,106.7 6.39,102.61C2.3,98.53 0,92.98 0,87.2V46.87C0,44.06 0.64,41.92 1.64,40.11C2.45,38.63 3.51,37.39 4.44,36.31C4.59,36.13 4.73,35.96 4.88,35.79C5.93,34.54 6.85,33.34 7.54,31.75C8.23,30.17 8.73,28.09 8.73,25.07C8.73,23.87 9.7,22.89 10.91,22.89Z"
+        android:fillColor="#000000"
+        android:fillType="evenOdd"/>
+  </group>
+</vector>

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

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background" />
-    <foreground android:drawable="@drawable/ic_launcher_foreground" />
-    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
 </adaptive-icon>

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

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background" />
-    <foreground android:drawable="@drawable/ic_launcher_foreground" />
-    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
 </adaptive-icon>

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>