英文:
Don't use 'BuildContext' across async gaps around showDialog in Flutter
问题
我在我的Flutter项目中的每个InAppWebView小部件内都会得到这个警告，显示为showDialog小部件。如何解决这个问题？
return InAppWebView(
...
onLongPressHitTestResult: (controller, hitTestResult) async {
if (LongPressAlertDialog.hitTestResultSupported
.contains(hitTestResult.type)) {
var requestFocusNodeHrefResult =
await _webViewController?.requestFocusNodeHref();
if (requestFocusNodeHrefResult != null) {
// 不要在异步间隔中使用 'BuildContext'
showDialog(
context: context,
builder: (context) {
return LongPressAlertDialog(
webViewModel: widget.webViewModel,
hitTestResult: hitTestResult,
requestFocusNodeHrefResult: requestFocusNodeHrefResult,
);
},
);
}
}
},
}
英文:
I'm getting this warning in my flutter project around every showDialog widget inside InAppWebView Widget. How to solve this ?
return InAppWebView(
...
onLongPressHitTestResult: (controller, hitTestResult) async {
if (LongPressAlertDialog.hitTestResultSupported
.contains(hitTestResult.type)) {
var requestFocusNodeHrefResult =
await _webViewController?.requestFocusNodeHref();
if (requestFocusNodeHrefResult != null) {
//Don't use 'BuildContext' across async gaps
showDialog(
context: context,
builder: (context) {
return LongPressAlertDialog(
webViewModel: widget.webViewModel,
hitTestResult: hitTestResult,
requestFocusNodeHrefResult: requestFocusNodeHrefResult,
);
},
);
}
}
},
}
答案1
得分: 5
尝试这样做：
if (requestFocusNodeHrefResult != null && context.mounted) { // <=== 添加这一行
showDialog(
context: context,
builder: (context) {
return LongPressAlertDialog(
webViewModel: widget.webViewModel,
hitTestResult: hitTestResult,
requestFocusNodeHrefResult: requestFocusNodeHrefResult,
);
},
);
}
英文:
try this:
if (requestFocusNodeHrefResult != null && context.mounted) { // <=== add this
showDialog(
context: context,
builder: (context) {
return LongPressAlertDialog(
webViewModel: widget.webViewModel,
hitTestResult: hitTestResult,
requestFocusNodeHrefResult: requestFocusNodeHrefResult,
);
},
);
}
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论