你好,我想问一下在Flutter中是否可以重新加载WebView?我搜索了一下,大部分都使用FAB(浮动操作按钮)来重新加载网站,但对于WebViews来说很少。是否有任何方法在WebView屏幕上实现它?
到目前为止,我尝试过SwipeDetector包和Pull-to-refresh包,但两者都不起作用,下拉刷新几乎能够实现,但会完全关闭我的应用程序(我已经遵循了文档,但似乎仅适用于ListViews)。
以下是我的代码:
class _HomePageState extends State<HomePage> {
final FirebaseMessaging _firebaseMessaging = FirebaseMessaging();
WebViewController myController;
final flutterWebviewPlugin = new WebView();
_exitApp(BuildContext context, Future<WebViewController> controller) async {
controller.then((data) async {
WebViewController controller = data;
var goBack = await controller.canGoBack();
if (goBack == true) {
print("onwill go back");
controller.goBack();
} else {
print("onwill not go back");
Navigator.pop(context);
}
});
}
@override
void initState() {
super.initState();
firebaseCloudMessagingListeners();
}
void firebaseCloudMessagingListeners() {
if (Platform.isIOS) iOSPermission();
_firebaseMessaging.getToken().then((token) {
print(token);
});
_firebaseMessaging.configure(
onMessage: (Map<String, dynamic> message) async {
setState(() {
print("${message['data']['url']}");
Navigator.push(
context,
MaterialPageRoute(
builder: (BuildContext context) => NotificationClicked()));
});
},
onResume: (Map<String, dynamic> message) async {
print("${message['data']['url']}");
},
onLaunch: (Map<String, dynamic> message) async {
print("${message['data']['url']}");
},
);
}
void iOSPermission() {
_firebaseMessaging.requestNotificationPermissions(
IosNotificationSettings(sound: true, badge: true, alert: true));
_firebaseMessaging.onIosSettingsRegistered
.listen((IosNotificationSettings settings) {
print("Settings registered: $settings");
});
}
Completer<WebViewController> _controller = Completer<WebViewController>();
@override
Widget build(BuildContext context) {
return WillPopScope(
onWillPop: () => _exitApp(context, _controller.future),
child: SafeArea(
child: Scaffold(
body: WebView(
initialUrl: 'https://syncshop.online/en/',
javascriptMode: JavascriptMode.unrestricted,
onWebViewCreated: (controller) {
_controller.complete(controller);
},
onPageFinished: (controller) async {
(await _controller.future).evaluateJavascript(
"document.getElementsByClassName('footer-container')[0].style.display='none';");
(await _controller.future).evaluateJavascript(
"document.getElementById('st_notification_1').style.display='none';");
(await _controller.future).evaluateJavascript(
"document.getElementById('sidebar_box').style.display='none';");
},
),
floatingActionButton: FutureBuilder<WebViewController>(
future: _controller.future,
builder: (BuildContext context,
AsyncSnapshot<WebViewController> controller) {
if (controller.hasData) {
return FloatingActionButton(
onPressed: () {
controller.data.reload();
},
child: Icon(Icons.refresh),
);
}
return Container();
},
),
),
),
);
}
}