https://www.jianshu.com/p/9c1e14fc16ec
![alt 属性文本]([image https://github.com/zackzhen/FlutterOnlineMall/blob/main/Screenshot_20230714_160759.png]) ![alt 属性文本]([image https://github.com/zackzhen/FlutterOnlineMall/blob/main/Screenshot_20230714_175140.png])