Example 1: flutter alertdialog
Future<void> _showMyDialog() async {
return showDialog<void>(
context: context,
barrierDismissible: false, // user must tap button!
builder: (BuildContext context) {
return AlertDialog(
title: Text('AlertDialog Title'),
content: SingleChildScrollView(
child: ListBody(
children: <Widget>[
Text('This is a demo alert dialog.'),
Text('Would you like to approve of this message?'),
],
),
),
actions: <Widget>[
TextButton(
child: Text('Approve'),
onPressed: () {
Navigator.of(context).pop();
},
),
],
);
},
);
}
Example 2: show dialog close flutter
BuildContext dialogContext; // <<----
showDialog(
context: context, // <<----
barrierDismissible: false,
builder: (BuildContext context) {
dialogContext = context;
return Dialog(
child: new Row(
mainAxisSize: MainAxisSize.min,
children: [
new CircularProgressIndicator(),
new Text("Loading"),
],
),
);
},
);
await _longOperation();
Navigator.pop(dialogContext); // <<----
Example 3: showdialog with builder flutter
showDialog(
context: context,
builder: (BuildContext context) => new AlertDialog(
title: new Text('Warning'),
content: new Text('Hi this is Flutter Alert Dialog'),
actions: <Widget>[
new IconButton(
icon: new Icon(Icons.close),
onPressed: () {
Navigator.pop(context);
})
],
));
Example 4: flutter alertdialog
create a methos _showDialog
then call it in your state
// user defined function
void _showDialog() {
// flutter defined function
showDialog(
context: context,
builder: (BuildContext context) {
// return object of type Dialog
return AlertDialog(
title: new Text("Alert Dialog title"),
content: new Text("Alert Dialog body"),
actions: <Widget>[
// usually buttons at the bottom of the dialog
new FlatButton(
child: new Text("Close"),
onPressed: () {
Navigator.of(context).pop();
},
),
],
);
},
);
}
Example 5: alertdialog flutter
showAlertDialog(BuildContext context) {
// set up the button
Widget okButton = FlatButton(
child: Text("OK"),
onPressed: () { },
);
// set up the AlertDialog
AlertDialog alert = AlertDialog(
title: Text("My title"),
content: Text("This is my message."),
actions: [
okButton,
],
);
// show the dialog
showDialog(
context: context,
builder: (BuildContext context) {
return alert;
},
);
}