Category: Tutorials
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If you’re working with Flutter, you may encounter an error message that says “the argument type ‘null’ can’t be assigned to the parameter type ‘key’.” This error occurs when you’re trying to pass a null value to a method or constructor that expects a non-null argument. In this tutorial, we’ll show you how to fix…
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With Dart, you may encounter an error message that says “the operator ‘[]’ isn’t defined for the type ‘object’. try defining the operator ‘[]’.” This error occurs when you’re trying to use the indexing operator on an object that doesn’t have the ‘[]’ operator defined. In this tutorial, we’ll show you how to define the…
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You may come across an error message that says “the argument type ‘Map<dynamic, dynamic>’ can’t be assigned to the parameter type ‘Map<String, dynamic>’.” This error occurs when you try to assign a map with dynamic keys or values to a map with specific key and value types. In this tutorial, we’ll show you how to…
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To quick to upgrade to Flutter 3.0 and your apps are no longer working? You can either spend a bit of time to make them compatible with any breaking changes, or you can rollback to to the previous version to buy a bit of time. By using the flutter downgrade-commmand, it’s easy to jump back to…
