Hero animations in Flutter - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a Hero animation in Flutter?

A Hero animation is a smooth animation that connects a widget from one screen to another, making it look like the widget flies between screens.

beginner

How do you identify widgets that participate in a Hero animation?

You wrap the widgets with a Hero widget and give them the same unique tag to link them across screens.

beginner

What property must be the same on Hero widgets to animate between screens?

The 'tag' property must be the same on Hero widgets on both the source and destination screens.

intermediate

Can Hero animations work with any widget?

Yes, Hero animations can work with any widget, but the widget should be visually similar on both screens for a smooth effect.

advanced

What happens if two Hero widgets have the same tag but are not on consecutive routes?

The Hero animation only works between the current route and the next route. If the tags match but routes are not consecutive, the animation won't run.

What is the main purpose of a Hero widget in Flutter?

A To create a smooth animation between two screens for a shared widget

B To handle user input events

C To manage app state

D To load images asynchronously

Hero widgets create smooth animations for shared widgets between screens.

Which property must match for Hero widgets to animate correctly?

A key

B id

C tag

D name

The 'tag' property links Hero widgets across screens for animation.

Where do you place the Hero widget in your widget tree?

A Only in the source screen

B Around the widget you want to animate

C Only in the destination screen

D Around the entire app

Wrap the widget you want to animate with Hero on both source and destination screens.

What happens if Hero widgets have different tags on source and destination screens?

A The animation fails and no transition occurs

B The widgets swap places instantly

C The app crashes

D The animation runs normally

Hero animations require matching tags; otherwise, no animation happens.

Can Hero animations be used with images?

A Only buttons can be used

B No, only text widgets can be used

C Only icons can be used

D Yes, images can be wrapped in Hero widgets

Any widget, including images, can be wrapped in Hero for animations.

Explain how to implement a Hero animation between two Flutter screens.

Think about linking widgets visually across screens.

What are the key benefits of using Hero animations in mobile apps?

Consider how animations help users understand screen changes.