Context: I'm creating an app for sales and when I'm on the sales screen I have a button (Add item), this button takes me to the items grid.
my difficulty is turning on the sales screen with the selected item.
onTap: () => isSelecting ? Navigator.of(context).pop() : null,
You can use this
Navigator.pop(context, yourObject);
onPressed: () async {
newProduto = await Navigator.of(context).push(MaterialPageRoute(builder: (context) => ProdutosPage(selecting: true)));
setState(() {
produtos.add(newProduto);
});
}
Related
I am using the favorite_button Widget to add items to the list of favorites.
For that matter, I have a listview and for each row, I added the option to add it as a favorite. I also have a condition in the backend that if the number of favorites is more than 10, the responsecode equals to 2 and then shows a dialogbox in the flutter and does not add it to the favorite.
Everything works perfectly. The only problem that I have is that in conditions with more than 10 favorites, when I click, it marks as favorite and then shows the dialog box but I could not find a way to undo this action. However, it does not add it to the list (when I refresh the page, it shows as unmarked). How could I unmark it from marked as favorite, for example, when user closes the showDialog?
Any other approach is also appreciated like simulating the onpressed action to undo the action of favoriting.
Thank you in advance.
StarButton(
isStarred: UserFavorite
.Users!
valueChanged: (_isStarred) {
if (_isStarred == true)
setState(() async {
var resp =
await add(
widget.oauth,
widget.Id,);
if (resp.responseCode ==
2) {
await showDialog(
context: context,
builder:
(alertDialogContext) {
return AlertDialog(
title: Text(
'Limit Reached'),
content: Text(
'You are allowed to add up to 10 sensors as your favorite.'),
actions: [
TextButton(
child: Text(
'Ok'),
onPressed:
() {
Navigator.pop(
alertDialogContext);
},
),
],
);
},
);
}
});
else
setState(() {
delete(
widget.oauth,
widget.Id,
);
});
},
)
I have an 'Add' link in my dropdown, which navigates to a form to do an add, and then sets the state afterwards, adding the new item to the dropdown. At least that's the way it was working; I tried to refactor to reuse this dropdown (it has some logic attached to it), and it no longer works...
Before, working:
The dropdown was added in a single stateful widget, and this code set the state:
TextButton(
child: Text(linkText),
onPressed: () {
Navigator.pop(aidingDropdownKey.currentContext!);
Navigator.push(context,
MaterialPageRoute(builder: (context) => linkDest))
.then((_) => setState(() {}));
},
)
Now, the dropdown is in its own StatefulWidget, and the DropdownMenuItem with the 'Add' link is in its own class. The code that tries to set the state looks like this:
TextButton(
child: Text(text),
onPressed: () {
if (poppee != null) {
Navigator.pop(poppee);
}
Navigator.push(context,
MaterialPageRoute(builder: (context) => dest))
.then((_) {
var afterClosed = afterLinkClosed;
if (afterClosed != null) {
afterClosed();
}
});
},
)
and
DropdownLabel(
"NTRIP Services",
linkText: "Add",
linkDest: const NtripForm(),
linkPoppee: widget.aidingKey?.currentContext,
afterLinkClosed: () {
_logger.d("after link callback called");
setState(() {});
},
)
Through logging, I can see my dropdown's build method is getting called, and the new menu item is created, but the UI isn't updating; the new item isn't showing.
Why wouldn't the UI update in this case?
//calling a different class for dialog on submit click it's not updating list data
It's refreshing data but not going to the last opened tab on the second tab I perform this action but on tap, it's going on the first tab.
onTap: () {
setState(() {
Navigator.pushReplacement(context,
MaterialPageRoute(builder: (context) =>
EmployeePersonalDetailsUpdateActivity(_token),));
widget.listener.onEmployeeFamilyClick(_day, _month, _year,
_working);
});
Navigator.pop(context,true);
}
Your are calling your widget.listener after you navigate, call it before you navigate the route & if you want to pass the api response to the EmployeePersonalDetailsUpdateActivity widget, you must handle it, and it's your choice when you want to refresh your screen.
setState(() {
widget.listener.onEmployeeFamilyClick(_day,_month,_year,_working);
Navigator.pushReplacement(context, MaterialPageRoute(builder:
(context) => EmployeePersonalDetailsUpdateActivity(_token),));
});
There's another way:
widget.listener.onEmployeeFamilyClick(_day,_month,_year,_working).then((value) {
Navigator.pushReplacement(context, MaterialPageRoute(builder:
(context) => EmployeePersonalDetailsUpdateActivity(_token), value));
});
you can navigate your widget and pass the value of the response and show the updated value on the widget.
I pass a page with this code below.
Navigator.push(context,
MaterialPageRoute(builder: (context) => FileFolder()));
for example, I change some data in FileFolder(); page. And I want to get this data to my first page what I change data. I use Navigator.pop(context); but this code is not run initstate((){});. How can I refresh my first page?
//first page
Future data = await Navigator.push(context,
MaterialPageRoute(builder: (context) => FileFolder()));
setState(() {
myData = data;
});
//second page FileFolder
Map data = {};
Navigator.pop(context,data);
You can write your code inside initstate((){}); method like below:
Future.delayed(Duration.zero, () {
Navigator.push(context,
MaterialPageRoute(builder: (context) => FileFolder()));
});
I want to navigate into one page to another an I used following code to that
Create route
final routes = <String,WidgetBuilder> {
DashboardIesl.tag : (context)=>DashboardIesl()
};
navigation to button click
onPressed: () {
Navigator.push(context, new MaterialPageRoute(
builder: (context) => new DashboardIesl()
));
},
It gives the error message as follows
Undefined name 'context'.
please show me more code,context is only available in statefull widgets,
onPressed: () { Navigator.push(
context,
MaterialPageRoute(builder: (context) => DashboardIesl()), );}
I think this will help you
You have to write onPressed() with in the class.