运行的仓库中的源码，把demo文件夹删除后，把environment下 sdk: ‘>=3.1.3 <4.0.0’ 或 sdk: “>=2.12.0 <3.0.0” cupertino_icons: ^1.0.2 然后pub get就剩下下面的报错信息了，要不改environment的话，pub get不了

没找到SearchBar
’SearchBar’ isn’t a function.
Try correcting the name to match an existing function, or define a method or function named ‘SearchBar’.
The name ‘SearchBar’ is defined in the libraries ‘package:flutter/src/material/search_anchor.dart (via package:flutter/material.dart)’ and ‘package:flutter_trip/widget/search_bar.dart’.
Try using ‘as prefix’ for one of the import directives, or hiding the name from all but one of the imports.

Error (Xcode): lib/pages/search_page.dart:125:22: Error: ‘SearchBar’ is imported from both
’package:flutter/src/material/search_anchor.dart’ and ‘package:flutter_trip/widget/search_bar.dart’.