Flutter Tutorial: Understanding Keys and GlobalKey for Stateful Widgets

With Flutter Keys & the Flutter Global Key, you can access the state of Stateful Widgets in Flutter. The main Flutter Keys are GlobalKey, ValueKey, UniqueKey, & ObjectKey.
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RESOURCES
UniqueKey Tutorial: https://www.youtube.com/watch?v=WhnB_5yjyWQ
ValueKey Tutorial: https://www.youtube.com/watch?v=-F_5yHm_Zso
Null Safety Tutorial: https://www.youtube.com/watch?v=Q_WloMNKOkU
Migrate App To Null Safety Tutorial: https://www.youtube.com/watch?v=GLnQphHi1BY
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App Internationalization Tutorial: https://www.youtube.com/watch?v=Zw4KoorVxgg

TIMELINE
0:00 Introduction Flutter Global Key
0:34 Setup Global Key
2:06 Access State Of Stateful Widget
4:17 Global Key For Forms & Validation

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