I was using the following website to generate several launcher icons for my flutter app.
https://romannurik.github.io/AndroidAssetStudio/icons-launcher.html
But after I replace the original flutter icons ( file path: myapp/android/app/src/main/res ) and run my app, my icon is in a circled icon. ( check the image I attached )
My Android Virtual Device is Nexus 5X API 28.
So can anyone tell me what was wrong? And Can I use a square icon to replace this one?
The launcher that comes on the emulator forces all icons to be round. If the icon isn't already round, it will add a round border around it, like you see in that screenshot.
This isn't something you can change. If you want your icon to be square, use a different launcher. It's ultimately up to the user how their icons display.
You may want to consider implementing adaptive icons, so if a user does use circle or squircle icons and their icon pack/launcher forces all icons to be round, it at least won't look terrible.
