Flutter Dialogs with Example

In Flutter, we can create dialogs to display important information to the user or to prompt the user for input. A dialog is a small window that appears on top of the current screen, and it typically contains a message and one or more buttons for the user to interact with. In this blog post, we will explore how to create dialogs in Flutter with examples.

Simple Dialog

The SimpleDialog widget in Flutter is a basic dialog that displays a title and a list of options for the user to choose from.

Here is an example of how to create a simple dialog in Flutter

showDialog(
  context: context,
  builder: (BuildContext context) {
    return SimpleDialog(
      title: Text('Choose an option'),
      children: <Widget>[
        SimpleDialogOption(
          onPressed: () {
            Navigator.pop(context, 'Option 1');
          },
          child: Text('Option 1'),
        ),
        SimpleDialogOption(
          onPressed: () {
            Navigator.pop(context, 'Option 2');
          },
          child: Text('Option 2'),
        ),
        SimpleDialogOption(
          onPressed: () {
            Navigator.pop(context, 'Option 3');
          },
          child: Text('Option 3'),
        ),
      ],
    );
  },
);​

In this example, we use the showDialog function to display the dialog. The SimpleDialog widget contains a title and a list of children, which are the options for the user to choose from. Each option is represented by a SimpleDialogOption widget, which has an onPressed callback that pops the dialog and returns the selected option to the calling screen.

Alert Dialog

The AlertDialog widget in Flutter is a dialog that displays a title, a message, and one or more buttons for the user to interact with. 

Here is an example of how to create an alert dialog in Flutter

showDialog(
  context: context,
  builder: (BuildContext context) {
    return AlertDialog(
      title: Text('Alert'),
      content: Text('This is an alert message.'),
      actions: <Widget>[
        TextButton(
          onPressed: () {
            Navigator.pop(context, 'OK');
          },
          child: Text('OK'),
        ),
      ],
    );
  },
);​

In this example, we use the showDialog function to display the alert dialog. The AlertDialog widget contains a title and a content widget, which is the message to display to the user. The dialog also contains a list of actions, which are the buttons for the user to interact with. Each button is represented by a TextButton widget, which has an onPressed callback that pops the dialog and returns the selected option to the calling screen.

Conclusion

we explored how to create dialogs in Flutter with examples. We learned how to create a simple dialog using the SimpleDialog widget, and how to create an alert dialog using the AlertDialog widget. With these widgets, we can create dialog boxes that display important information to the user and prompt the user for input in our Flutter applications.