showDialog(
  context: context,
  builder: (BuildContext context) {
    return AlertDialog(
      title: Text('Update Available'),
      content: Text('A new version of the app is available. Would you like to update now?'),
      actions: [
        TextButton(
          child: Text('Later'),
          onPressed: () => Navigator.pop(context),
        ),
        TextButton(
          child: Text('Update'),
          onPressed: () {
            // Handle update logic
            Navigator.pop(context);
          },
        ),
      ],
    );
  },
);

showDialog(
  context: context,
  builder: (BuildContext context) {
    return Dialog(
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(16),
      ),
      elevation: 0,
      backgroundColor: Colors.transparent,
      child: Container(
        padding: EdgeInsets.all(16),
        decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.circular(16),
        ),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            // Your custom content here
          ],
        ),
      ),
    );
  },
);

showModalBottomSheet(
  context: context,
  shape: RoundedRectangleBorder(
    borderRadius: BorderRadius.vertical(top: Radius.circular(20)),
  ),
  builder: (BuildContext context) {
    return Container(
      height: 200,
      padding: EdgeInsets.all(16),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Text(
            'Select an option',
            style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
          ),
          SizedBox(height: 20),
          // Your options here
        ],
      ),
    );
  },
);

Scaffold.of(context).showBottomSheet(
  (BuildContext context) {
    return Container(
      height: 300,
      color: Colors.amber,
      child: Center(
        child: Text('This is a persistent bottom sheet'),
      ),
    );
  },
);