Flutter - Steps to setup simple Android Launch Screen

1. Create 4096x4096 image on https://pixlr.com/e/ or somwhere else

2. Use tool like https://apetools.webprofusion.com/#/tools/imagegorilla to generate full pack of drawable

3. On Android Studio, open Resource Manager (View > Tool Windows > Resource Manager ) and add downloaded drawable bundle in previous stage

4. Edit launch_background.xml somehow like below:

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@android:color/white" />
    <item>
        <bitmap
            android:gravity="center"
            android:src="@drawable/screen" />
    </item>
</layer-list>