Init repo

android/app/src/main/res/drawable-v21/launch_background.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="?android:colorBackground" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

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

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+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+	<item android:drawable="@android:color/white" />
+
+	<!-- You can insert your own image assets here -->
+	<!-- <item>
+        <bitmap android:gravity="center" android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

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

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+<?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="@mipmap/ic_launcher_foreground"/>
+  <monochrome android:drawable="@mipmap/ic_launcher_monochrome"/>
+</adaptive-icon>

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

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+<?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-night/styles.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+	<!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is on -->
+	<style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
+		<!-- Show a splash screen on the activity. Automatically removed when
+             the Flutter engine draws its first frame -->
+		<item name="android:windowBackground">@drawable/launch_background</item>
+	</style>
+	<!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+	<style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
+		<item name="android:windowBackground">?android:colorBackground</item>
+		<item name="android:windowLayoutInDisplayCutoutMode">shortEdges</item>
+	</style>
+</resources>

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

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#FF3A2101</color>
+</resources>

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

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+	<!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is off -->
+	<style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
+		<!-- Show a splash screen on the activity. Automatically removed when
+             the Flutter engine draws its first frame -->
+		<item name="android:windowBackground">@drawable/launch_background</item>
+	</style>
+	<!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+	<style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
+		<item name="android:windowBackground">?android:colorBackground</item>
+		<item name="android:windowLayoutInDisplayCutoutMode">shortEdges</item>
+	</style>
+</resources>