feat: add android adaptive icon (#180)

android/app/src/main/AndroidManifest.xml

@@ -6,7 +6,7 @@
     <application
         android:label="ToPwr"
         android:name="${applicationName}"
-        android:icon="@mipmap/launcher_icon">
+        android:icon="@mipmap/ic_launcher">
         <meta-data android:name="com.google.android.geo.API_KEY"
             android:value="AIzaSyDKfUDQv4mb4W4I4bx0WE4qYkAl53Vfciw" />
         <activity

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

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <shape android:shape="rectangle">
+            <gradient
+                android:type="radial"
+                android:centerX="50%"
+                android:centerY="50%"
+                android:gradientRadius="50%"
+                android:startColor="#F26D43"
+                android:endColor="#DE371B"
+                android:centerColor="#FFEE6645"
+                android:useLevel="false" />
+        </shape>
+    </item>
+
+</selector>

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

@@ -0,0 +1,36 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="904"
+    android:viewportHeight="232">
+  <group android:scaleX="0.69"
+      android:scaleY="0.69"
+      android:translateX="140.12"
+      android:translateY="35.96">
+    <group android:scaleX="0.67346936"
+        android:scaleY="0.17283727"
+        android:translateX="147.59184"
+        android:translateY="95.950874">
+      <path
+          android:pathData="m60.5,11.5q71.1,-0.7 142,1.5 17.4,11.8 7.5,30.5 -3.3,3.8 -7.5,6.5 -37.9,2.2 -76,1.5 0.3,76.5 -0.5,153 -7.9,19.8 -28.5,13.5 -9.2,-5.1 -11.5,-15.5 -0.8,-75.5 -0.5,-151 -13,0.2 -26,-0.5 -17.9,-8.4 -12.5,-27.5 4.2,-9 13.5,-12z"
+          android:fillColor="#fefffe"
+          android:fillType="evenOdd"/>
+      <path
+          android:pathData="m317.5,11.5q48.5,-0.7 97,1.5 49.9,16 45.5,68.5 -7.4,33.9 -39.5,46.5 -18.2,4.4 -37,3.5 0.3,35.5 -0.5,71 -8.3,23.3 -31.5,13.5 -6.6,-4.6 -8.5,-12.5 -0.3,-36 -1.5,-72 -24.4,-4.8 -18.5,-29 6.1,-11.8 19.5,-12 0,-19 0,-38 -12.5,0.2 -25,-0.5 -15.4,-4 -17,-20 1.8,-16 17,-20.5zM383.5,90.5q11.5,0.2 23,-0.5 7.8,-1.5 11.5,-8.5 8.4,-17.6 -8.5,-27.5 -12.9,-2.1 -26,-1.5 0,19 0,38z"
+          android:fillColor="#fefffe"
+          android:fillType="evenOdd"/>
+      <path
+          android:pathData="m497.5,11.5q18,-0.3 22.5,17 0.5,69 1,138 6.9,16.8 24.5,12.5 9.9,-4.1 12.5,-14.5 0.5,-52 1,-104 4.6,-14.2 19.5,-15 17.7,1.5 20.5,19 0,52.6 2,105 8.2,13.2 23.5,9.5 10.3,-4.4 12.5,-15.5 0.5,-68.5 1,-137 8.2,-18.2 27.5,-12.5 8.3,3.8 11.5,12.5 1,72.5 0,145 -12.1,45.1 -59,49 -22.3,-1.2 -39.5,-15 -38,28.5 -77,1.5 -17.8,-15.3 -21.5,-38.5 -1,-70.5 0,-141 4.3,-13.1 17.5,-16z"
+          android:fillColor="#fefffe"
+          android:fillType="evenOdd"/>
+      <path
+          android:pathData="m713.5,11.5q48,-0.7 96,1.5 44.3,12.5 47,58.5 -0.5,21.7 -14,38.5 12.5,14.4 14.5,33.5 1,30 0,60 -7,20.9 -28.5,14.5 -9.5,-4.3 -11.5,-14.5 -0.5,-29.5 -1,-59 -3.3,-9.3 -12.5,-12.5 -12.5,-0.7 -25,-0.5 0.7,37.6 -1.5,75 -8,15.8 -25.5,11.5 -11,-4 -13.5,-15.5 -0.3,-35.5 -1.5,-71 -22.6,-4.2 -18.5,-27 4.9,-13.7 19.5,-14 0,-19 0,-38 -12.5,0.2 -25,-0.5 -19.7,-7.1 -14.5,-27.5 4.9,-10.2 15.5,-13zM778.5,90.5q11,0.2 22,-0.5 9.5,-2.5 13.5,-11.5 5.3,-18.3 -12.5,-25.5 -11.5,-0.7 -23,-0.5 0,19 0,38z"
+          android:fillColor="#fefffe"
+          android:fillType="evenOdd"/>
+      <path
+          android:pathData="m207.5,100.5q46.2,-3.6 65.5,38 13.8,46.2 -25.5,73.5 -43.2,20.5 -76.5,-13.5 -25.2,-35.5 -3,-73 15,-20.2 39.5,-25zM199,154.5q-3.1,21.3 18,25 18.2,-1.9 19.5,-20 -3,-18.5 -22,-19 -11.2,2.9 -15.5,14z"
+          android:fillColor="#fefffe"
+          android:fillType="evenOdd"/>
+    </group>
+  </group>
+</vector>

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

@@ -0,0 +1,6 @@
+<?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"/>
+</adaptive-icon>

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

@@ -0,0 +1,6 @@
+<?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"/>
+</adaptive-icon>

pubspec.yaml

@@ -185,7 +185,7 @@ flutter_native_splash:
     image: assets/splash_screen/splash_logo.png
 
 flutter_launcher_icons:
-  android: "launcher_icon"
+  android: false # manually set in Android Studio
   ios: true
   remove_alpha_ios: true
   image_path: "assets/app_icon.png"