第二页是产品详细信息页,在第一页上,产品是由目录显示的。context, index) => ItemCard( press: () => Navigator.push`The following assertion was thrown while handling a gesture:
Assertion failed: file:///C:
我用的是颤动警报包rflutter_alert 1.1.0,在同一页上写同样的代码行吗?然而,由于函数太多,使得我的代码在一页上太长了。because it has a return type of 'Widget'.dart(return_of_invalid_type) 如果我这样写 对话框省道 import 'package:flutterAlert( type: AlertType.error,
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