How to Avoid UI Flickers When Showing Images or Data Conditionally?

Flickering often happens when widgets rebuild too frequently or async content like images/data briefly shows empty placeholders.

Solutions:

1. Use FadeInImage for images

dart

FadeInImage.assetNetwork( placeholder: 'assets/placeholder.png', image: 'https://example.com/photo.jpg',
)

2. Use FutureBuilder or StreamBuilder properly

Wrap async UI in FutureBuilder with loading fallback:

dart

FutureBuilder( future: fetchData(), builder: (context, snapshot) { if (snapshot.connectionState == ConnectionState.waiting) { return CircularProgressIndicator(); } else if (snapshot.hasError) { return Text('Error'); } else { return Text(snapshot.data.toString()); } },
);

3. Keep stable widget trees

Avoid returning null or empty Container() rapidly in async logic

Combine Visibility, Opacity, and conditional layouts for smoother transitions.