flutterdartmigrationdart3

Flutter Migrate old project to null safety

I have an old flutter project it doesn't support null safety dart 3.0. I want to migrate its to Flutter 3 and Dart 3 without manual change variable in my model or class to null safety

I try to upgrade environment: sdk: to support null safety and upgrade package it's work but all variable in my model or class getting error null safety

Solution

  • You can follow the official migration guide provided by the Dart team. You can find the migration guide here.

    steps:

    downgrade flutter - dart pub get - dart migrate