[英]How can I make a dismissible alert in flutter?
我可以顯示警報,但無法關閉它。 但為什么?
編碼:
showGeneralDialog(
barrierColor: Colors.red,
context: context,
barrierDismissible: true,
barrierLabel: MaterialLocalizations.of(context).modalBarrierDismissLabel,
transitionDuration: const Duration(milliseconds: 300),
pageBuilder: (BuildContext buildContext, Animation animation,
Animation secondaryAnimation) {
if (shouldDismiss) {
Future.delayed(const Duration(seconds: 3), () {
Navigator.of(context, rootNavigator: true).pop(true);
});
}
return SomeWidget();
替換這個
Navigator.of(context, rootNavigator: true).pop(true);
這樣
Navigator.of(buildContext, rootNavigator: true).pop(true);
好的,所以問題出在
SomeWidget()
它里面有一個孩子,叫做WillPopScope()
並且這個小部件有一個參數: onWillPop: () async => bool
this boolean was false
,這就是我無法關閉的原因......
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