Flutterエラー Gradle build failed to produce an .apk file. It's likely that this file was generated under プロジェクトディレクトリbuild, but the tool couldn't find it.AndroidFlutter Androidの実機でデバッグビルドしようとしたところ、掲題のエラーに遭遇した。 build.gradle でFlavorを追加したのに、実行コマンドが対応していなかったのが原因。 以下のようにflavorを指定した起動設定にすれば解決。
![Flutterエラー Gradle build failed to produce an .apk file. It's likely that this file was generated under プロジェクトディレクトリbuild, but the tool couldn't find it. - Qiita](https://cdn-ak-scissors.b.st-hatena.com/image/square/b1aa7d8c2cea748abbea0b2620c153d27f9f7fd7/height=288;version=1;width=512/https%3A%2F%2Fqiita-user-contents.imgix.net%2Fhttps%253A%252F%252Fcdn.qiita.com%252Fassets%252Fpublic%252Farticle-ogp-background-412672c5f0600ab9a64263b751f1bc81.png%3Fixlib%3Drb-4.0.0%26w%3D1200%26mark64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTk3MiZoPTM3OCZ0eHQ9Rmx1dHRlciVFMyU4MiVBOCVFMyU4MyVBOSVFMyU4MyVCQyUyMEdyYWRsZSUyMGJ1aWxkJTIwZmFpbGVkJTIwdG8lMjBwcm9kdWNlJTIwYW4lMjAuYXBrJTIwZmlsZS4lMjBJdCUyN3MlMjBsaWtlbHklMjB0aGF0JTIwdGhpcyUyMGZpbGUlMjB3YXMlMjBnZW5lcmF0ZWQlMjAlRTIlODAlQTYmdHh0LWNvbG9yPSUyMzIxMjEyMSZ0eHQtZm9udD1IaXJhZ2lubyUyMFNhbnMlMjBXNiZ0eHQtc2l6ZT01NiZ0eHQtYWxpZ249bGVmdCUyQ3RvcCZzPTc5YWUwMDJhNDk4YzQ1Y2U4N2YxZTRlM2RhZWUxMGIx%26mark-x%3D142%26mark-y%3D57%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZoPTc2Jnc9NzcwJnR4dD0lNDBzZWtpdGFrYV8xMjE0JnR4dC1jb2xvcj0lMjMyMTIxMjEmdHh0LWZvbnQ9SGlyYWdpbm8lMjBTYW5zJTIwVzYmdHh0LXNpemU9MzYmdHh0LWFsaWduPWxlZnQlMkN0b3Amcz1hY2QwNTI4MDk4NjQzNmNkM2RjMTU3ZGIzNjg5MjA5Zg%26blend-x%3D142%26blend-y%3D486%26blend-mode%3Dnormal%26s%3D934dd404d879d03ce972cba65eabe431)