widget method
Implementation
widget(context) {
if (cupertino) return _buildCupertinoAlert();
if (adaptive)
return Builder(builder: (context) {
final platform = Theme.of(context).platform;
if (platform == TargetPlatform.macOS || platform == TargetPlatform.iOS)
return _buildCupertinoAlert();
return _buildAlertDialog();
});
return _buildAlertDialog();
}