If you are creating a new flutter app using the latest stable version, the default now is Kotlin for android and Swift for IOS. You can read more here: github.com/flutter/flu…
If you want to create a new app using Java for Android and Objective-C for IOS use the following command:
flutter create -i objc -a java new_app
对于已有项目，如果把/ios和/android文件夹删掉，运行
flutter create -i objc -a java .
会再次生成初始化的/ios 和/android,这里指定了ios使用objective-c，Android用java 如果不加参数直接运行
flutter create .
则会默认ios使用swift，Android使用kotlin
vscode cmd+, 可以进行默认语言的设置
参考:
