body: const Center(
// Center is a layout widget. It takes a single child and positions it
// in the middle of the parent.
child: WebView(
initialUrl: "https://xxxx",
navigationDelegate: (navigation) {
return NavigationDecision.navigate;
},
),
),
编译时发生错误。
lib/main.dart:84:31: Error: Not a constant expression.
navigationDelegate: (navigation) {
^^^^^^^^^^^^
当我使用flutter-2.2.0
andwebview_flutter-2.0.13
时,上面的代码可以正常工作。但是在我将flutter升级到2.5.2并将webview_flutter升级到2.0.13之后,错误发生了。环境(颤振2.5.2):
environment:
sdk: ">=2.12.0 <3.0.0"
dependencies:
flutter:
sdk: flutter
webview_flutter: 2.1.1