CupertinoActionSheet constructor

const CupertinoActionSheet({Key key, Widget title, Widget message, List<Widget> actions, ScrollController messageScrollController, ScrollController actionScrollController, Widget cancelButton })

Creates an iOS-style action sheet.

An action sheet must have a non-null value for at least one of the following arguments: actions, title, message, or cancelButton.

Generally, action sheets are used to give the user a choice between two or more choices for the current context.

Implementation 

const CupertinoActionSheet({
  Key key,
  this.title,
  this.message,
  this.actions,
  this.messageScrollController,
  this.actionScrollController,
  this.cancelButton,
})  : assert(actions != null || title != null || message != null || cancelButton != null,
        'An action sheet must have a non-null value for at least one of the following arguments: '
        'actions, title, message, or cancelButton'),
      super(key: key);