flutteranimationnavigationtransitiongorouter

Set default transition for go_router in Flutter


as the docs from go_router describe, it is easy to set pageBuilder-Transitions for single pages. However, I want to set the default PageTransition for all pages.

How do I set the default page transition with/for go_router in Flutter?

Single Page:


  // this is the proposed method to do it for single pages
  // how can i apply it to all pages without writing the same code?
  GoRoute(
      path: '/login',
      builder: (context, state) => const LoginScreen(),
      pageBuilder: (context, state) => CustomTransitionPage<void>(
        key: state.pageKey,
        child: const LoginScreen(),
        transitionsBuilder: (context, animation, secondaryAnimation, child) =>
            FadeTransition(opacity: animation, child: child),
      ),
    ),

Best regards


Solution

  • The go_router package does not support this at the moment, but to reduce code duplication, you can create a helper function that would apply the custom transition for your route, like:

    CustomTransitionPage buildPageWithDefaultTransition<T>({
      required BuildContext context, 
      required GoRouterState state, 
      required Widget child,
    }) {
      return CustomTransitionPage<T>(
        key: state.pageKey,
        child: child,
        transitionsBuilder: (context, animation, secondaryAnimation, child) => 
          FadeTransition(opacity: animation, child: child),
      );
    }
    
    <...>
    
    GoRoute(
      path: '/login',
      pageBuilder: (context, state) => buildPageWithDefaultTransition<void>(
        context: context, 
        state: state, 
        child: LoginScreen(),
      ),
    ),