An AnimatedWidget is a Listenable.

False

True

Calling context.read<T>() class (from 'provider') in the build method of a widget throws an exception.

False

True

An app is said to be 'internationalized' when certain UI elements automatically change according with the culture and the geographical area of the device.

False

True

The AsyncSnapshot<T>.data property is nullable.

False

True

The body of a then(), called on a Future<T>, is executed immediately.

False

True

The following code compiles successfully.

void test({int x : 0}) {
  print('$x');
}

False

True

The following code compiles successfully.

String? name;
String? first = name?[0];

False

True

AnimatedBuilder is a subtype of AnimatedWidget.

False

True

The rootBundle object should be used inside stateful and stateless widgets.

False

True

You can create a function inside another function (in other words, Dart allows 'nested functions').

False

True

A ListView cannot scroll in the horizontal axis.

False

True

You can use super.methodName() to invoke the original method definition in the superclass.

False

True

The MaterialApp and CupertinoApp widget have the onRouteGenerated callback to initialize routes.

False

True

Future.sync() executes the callback immediately.

False

True

A CupertinoPageScaffold shows a navigation bar at the top of the screen.

False

True

When using implements, every method must be overridden.

False

True

If B doesn't implement every abstract method of the superclass A, then B must be abstract as well.

False

True

Implicit animations are part of the Flutter SDK.

False

True

Using the Memory View page of DevTools, you can spot memory leaks.

False

True

The BlocBuilder<T, K> widget (from 'flutter_bloc') is the one that rebuilds the UI in response to state changes sent by the bloc.

False

True

The following code compiles successfully (where isActive is a boolean).

AnimatedCrossFade(
  duration: const Duration(seconds: 2),
  crossFadeState: isActive ? 0 : 1)

False

True

The 'test' package is a dev dependency.

False

True

Generally, when overriding int get hashCode, it's a good practice working with multiplications of prime numbers.

False

True

The validator callback of a TextFormField can return null.

False

True

Future.wait<T>() blocks the execution because it waits the completion of every Future<T>.

False

True