So I want to animate a fab between extended and normal like Gmail
but my FABs refuse to animate this just change immediately
This is my code:
return Scaffold(
appBar: appBar,
body: Center(
<Code of no interest>
),
floatingActionButton: isFABOpen
? FloatingActionButton.extended(
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(builder: (context) => AddQuote()),
);
},
label: Text('Add Quote'),
icon: Icon(Icons.add_rounded),
)
: FloatingActionButton(
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(builder: (context) => AddQuote()),
);
},
child: Icon(Icons.add_rounded),
),
floatingActionButtonAnimator: FloatingActionButtonAnimator.scaling,
);
Related
I'm using PopupMenuButton in my application. I want to showDialog on tapping a PopupMenuItem.
My PopupMenuItem:
PopupMenuItem(
child: Text("Show dialog"),
onTap: () {
showDialog(
context: context,
barrierColor: Colors.black26,
builder: (context) => AlertDialog(
...
)
},
),
Also using onSelected inside the PopupMenuButton didn't work.
Thats because onTap of popupMenuItem tries to use Navigator.pop to close the popup but at same time you are trying to show the dialog, So it closes the dialog and leaves the popup so, you can wait till the all the animations or ongoing things complete then show dialog
code: dartPad code
PopupMenuItem(
child: const Text('Item 0'),
onTap: () {
WidgetsBinding?.instance?.addPostFrameCallback((_) {
showCupertinoDialog(
context: context,
builder: (context) {
return CupertinoAlertDialog(
title: const Icon(CupertinoIcons.info_circle),
content: const Text(
'Hello User, Welcome',
textAlign: TextAlign.center,
),
actions: [
CupertinoDialogAction(
isDefaultAction: true,
onPressed: () => Navigator.pop(context),
child: const Text('Thanks'),
),
],
);
});
});
}),
Try this one:
PopupMenuItem(
child: Text("Show dialog"),
onTap: () {
Future<void>.delayed(
const Duration(), // OR const Duration(milliseconds: 500),
() => showDialog(
context: context,
barrierColor: Colors.black26,
builder: (context) => AlertDialog(...),
),
),
},
);
after Button-press, i want to open an AlertDialog, but only if the variable bool showAlert is true.
This is my code until now:
FlatButton(
child: Text("HIER"),
onPressed: () {
return AlertDialog(
title: Text("HI"),
content: Text("Are you there?"),
actions: [
FlatButton(child: Text("Yes"), onPressed: () {},),
FlatButton(child: Text("No"), onPressed: () {},)
],
elevation: 24,
);
},
),
For my question (opening the alert if bool is true), the problem is, the AlertDialog is not opening.
Any solutions? Thanks
To show an AlertDialog you need a showDialog, so the code results like this :
FlatButton(
child: Text("HIER"),
onPressed: () {
if(showAlert){
showDialog(
//if set to true allow to close popup by tapping out of the popup
barrierDismissible: false,
context: context,
builder: (BuildContext context) => AlertDialog(
title: Text("HI"),
content: Text("Are you there?"),
actions: [
FlatButton(child: Text("Yes"), onPressed: () {},),
FlatButton(child: Text("No"), onPressed: () {},)
],
elevation: 24,
),
);
}
},
),
Use this code to show native diolog depends on platform:
FlatButton(
child: Text("HIER"),
onPressed: () {
if (Platform.isIOS) {
showCupertinoDialog(
context: context,
builder: (context) {
return CupertinoAlertDialog(
title: Text("HI"),
content: Text("Are you there?"),
actions: [
CupertinoDialogAction(
child: Text("Yes"),
onPressed: () {},
),
CupertinoDialogAction(
child: Text("No"),
onPressed: () {},
)
],
);
},
);
} else {
showDialog(
context: context,
builder: (context) {
return AlertDialog(
title: Text("HI"),
content: Text("Are you there?"),
actions: [
FlatButton(
child: Text("Yes"),
onPressed: () {},
),
FlatButton(
child: Text("No"),
onPressed: () {},
)
],
elevation: 24,
);
},
);
}
},
);
Check out this code, Hope it will help you
openDialog(bool showAlert, BuildContext context) async {
if(!showAlert) return;
var result = await showDialog(
context: context,
builder: (BuildContext context) => AlertDialog(
title: Text("HI"),
content: Text("Are you there?"),
actions: [
FlatButton(child: Text("Yes"), onPressed: () {
Navigator.pop(context, true);
},),
FlatButton(child: Text("No"), onPressed: () {
Navigator.pop(context, false);
},)
],
elevation: 24,
),
);
if(!(result ?? false)) {
// Yes click
} else {
// No click
}
}
Alternative
GetX Package Get.dialog()
And for many other scaffold components.
Dialog, Bottosheet, Snackbar, StateManagent Getx and Obx builder, and much more.
Visit pub.dev and search for GetX
Why do we need to provide the context in MaterialPageRoute when the build method of the widget is also taking the context?
onPressed: () {
Navigator.of(context).push(
MaterialPageRoute(builder: (context) {
return Scaffold(
appBar: AppBar(
title: Text("Second Route"),
),
body: Center(
child: RaisedButton(
onPressed: () {
Navigator.pop(context);
},
child: Text('Go back!'),
),
),
);
}),
);
},
my button code is as below and previously it closed the AlertDialog + Signed Out of Google when clicking on the continue button, but now it only signs out, the AlertDialog is still there... Anyone knows whats going on?
showAlertDialog(BuildContext context) {
// set up the buttons
Widget cancelButton = FlatButton(
child: Text("Cancel"),
onPressed: () {
Navigator.of(context, rootNavigator: true).pop();
},
);
Widget continueButton = FlatButton(
child: Text("Confirm Sign Out"),
onPressed: () {
signOutGoogle();
Navigator.of(context).pushAndRemoveUntil(
MaterialPageRoute(builder: (context) {
return LoginPage();
}), ModalRoute.withName('/'));
},
);
// set up the AlertDialog
AlertDialog alert = AlertDialog(
title: Text("Confirmation"),
content: Text("Are you sure you want to Sign Out?"),
actions: [
cancelButton,
continueButton,
],
);
// show the dialog
showDialog(
context: context,
builder: (BuildContext context) {
return alert;
},
);
}
showAlertDialog invoked here ：
RaisedButton(
onPressed: () {
showAlertDialog(context);
},
color: Colors.deepPurple,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Text(
'Sign Out',
style: TextStyle(fontSize: 25, color: Colors.white),
),
),
elevation: 5,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(40)),
)
Add Navigator.of(context).pop(); after signOutGoogle(); to close the dialog.
showAlertDialog(BuildContext context) {
// set up the buttons
Widget cancelButton = FlatButton(
child: Text("Cancel"),
onPressed: () {
Navigator.of(context, rootNavigator: true).pop();
},
);
Widget continueButton = FlatButton(
child: Text("Confirm Sign Out"),
onPressed: () {
signOutGoogle();
Navigator.of(context).pop(); // Pop the dialog
Navigator.of(context).pushAndRemoveUntil(
MaterialPageRoute(builder: (context) {
return LoginPage();
}), ModalRoute.withName('/'));
},
);
// set up the AlertDialog
AlertDialog alert = AlertDialog(
title: Text("Confirmation"),
content: Text("Are you sure you want to Sign Out?"),
actions: [
cancelButton,
continueButton,
],
);
// show the dialog
showDialog(
context: context,
builder: (BuildContext context) {
return alert;
},
);
}
I've got an AlertDialog() that it's barrierDismissible has been set to false. But yet when user presses the back button on android device the AlertDialog closes. How can I compeletly prevent the user from closing the AlertDialog()?
Here's what I've done so far:
return showDialog<bool>(
context: context,
barrierDismissible: false,
builder: (BuildContext context) {
return AlertDialog(
title: Text('Title'),
content: Text('This is the alert dialog content'),
actions: <Widget>[
FlatButton(
child: Text('ok'),
onPressed: () {
Navigator.of(context).pop();
print('ok you win');
},
),
],
);
},
);
Try this way use WillPopScope() to handle onBackPressed() event
showDialog(
context: context,
barrierDismissible: false,
builder: (BuildContext context) {
return WillPopScope(
onWillPop: () {return Future.value(false);},
child: return AlertDialog(
title: Text('Title'),
content: Text('This is the alert dialog content'),
actions: <Widget>[
FlatButton(
child: Text('ok'),
onPressed: () {
Navigator.of(context).pop();
print('ok you win');
},
),
],
),
);
});
You can use the WillPopScope as a parent of the AlertDialog
showDialog(context: context,builder: (BuildContext context)
{
return WillPopScope(
onWillPop: () async =>false,
child: AlertDialog(
title: Text('Title'),
content: Text('Sample'),
actions: <Widget>[
FlatButton(
child: Text('ok'),
onPressed: (){
Navigator.of(context).pop();
},
)
],
),
);