Flutter Hero Animation Tutorial: Shared Element Guide
This flutter hero animation tutorial walks you through Hero widgets, unique tags, list-to-detail transitions, flightShuttleBuilder customization, and fixes.
Open any polished app — a photo gallery, a shopping app, a music player — and tap an image. It doesn't just teleport to the next screen; it *flies* there, morphing from thumbnail to full view. That shared-element transition is the Flutter Hero animation , and it's one of the highest-polish-per-line-of-code widgets in the framework. This flutter hero animation tutorial builds the classic list-to-detail transition from scratch, then goes beyond the basics: custom flight paths, duration tuning, and fixes for the errors that actually show up in real projects. What you'll learn What the Hero widget does and how the flight between screens works The minimum viable Hero animation in under 20 lines The classic list→detail shared-element pattern How to make hero tags unique (and what breaks when they aren't) Customizing the flight with flightShuttleBuilder Tuning animation duration and curve Fixing "No Material widget found," tag conflicts, and image glitches Step 0 — The two screens A Hero animation needs a source and a destination : the same logical element shown on two routes. Everything below works on Flutter 3.x with no packages. Our demo is a photo grid where tapping a photo opens a detail screen. Scaffold it first without any animation: class Photo { final String id; final String url; const Photo(this.id, this.url); } const photos = [ Photo('1', 'https://picsum.photos/id/1015/400/400'), Photo('2', 'https://picsum.photos/id/1016/400/400'), Photo('3', 'https://picsum.photos/id/1018/400/400'), // ...as many as you like ]; The grid pushes a detail route on tap: GridView.builder( gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount( crossAxisCount: 2, ), itemCount: photos.length,…