在安装Flutter SDK的时候: 有 * [开发工具](https://link.segmentfault.com/?enc=PepSK%2FPtpMbOkbxRQWwpPQ%3D%3D.lhsFEmccw%2FSZU3DKrVNYpAsRBrQGkMs08fvoReyUe3OFvJijibDWtYrztljjWFWPHNicEedVl0LGvVmXEIX29oEUBawJzO0E48RIhB0H18Y%3D) * [文本编辑器或集成开发环境 (IDE)](https://link.segmentfault.com/?enc=kJqxEB4GPOUhvvwUyevGpA%3D%3D.7HVPGfcDag88Up0FsC4aLsuiUZMji%2BkELEYQIVwsoVc5hSndePn9eG6uz1znwu0dAtewxUwv9q19w7xL4pxfj5dG8a3gpcHK4MSu6O2bTieNsuVUnUMeOTsIMIH5en4a9DNaJpS8Zo0JOLBLE476Ow%3D%3D) 请问是只需要安装其中一个,还是2个都必须安装?