在flutter开发过程中，运行flutter命令，flutter doctor 或者flutter run等命令，如果出现Waiting for another flutter command to release the startup lock.. 只要进入flutter sdk 目录，然后找到bin/cache/lockfile文件，删除后再运行flutter doctor。一般需要将Android Studio关闭，否则lockfile会删不掉，如果关掉了以后还是提示删不掉，就稍微等一会儿。
flutter报错：Waiting for another flutter command to release the startup lock..
原文：https://www.cnblogs.com/zhouziyan/p/12896005.html