flutter-fix-layout-issues

Contents

• Constraint Model
• Error Signature Catalog
• Resolution Patterns
• Workflow: Fixing Layout Issues
• Examples

Constraint Model

Flutter layout operates on a strict negotiation rule:

Constraints go down. Sizes go up. Parent sets position.

1. A parent widget passes constraints (min/max width and height) to its child.
2. The child determines its own size within those constraints.
3. The parent decides the child's position.

Layout errors occur when this negotiation fails — typically when a parent provides unbounded constraints (infinite width or height) and the child attempts to expand infinitely.