Does flutter need gradle?

Open in Android Studio Tools->SDK Manager–SDK Tools.

Your Flutter module uses a plugin that has no additional Android Gradle dependency because it only uses Android OS APIs, such as the camera plugin.

Gradle is a build system used to build Android apps . Android developers use Android Studio and Gradle to build Android apps. Now with Flutter the future of mobile development, we develop one app (Dart language) and it runs on three platforms(Android, iOS, and Web).