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. Click here to Subscribe to Johannes Milke: https://www.youtube.com/JohannesMilke?sub_confirmation=1 👉 12 Week Flutter Training | https://heyflutter.com 👉 Flutter Masterclass Courses | https://heyflutter.com/masterclass Source Code | https://github.com/JohannesMilke/key_global_example My Courses | https://heyflutter.com Follow Newsletter | https://johannesmilke.com/newsletter SUBSCRIBE HERE http://bit.ly/JohannesMilke SUPPORT & SPONSOR ME https://github.com/sponsors/JohannesMilke 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 Native Splash Screen Tutorial: https://www.youtube.com/watch?v=8ME8Czqc-Oc Create Flutter Project For App Stores Tutorial: https://www.youtube.com/watch?v=4f1AO-f-jYQ QR Code Scanner App Tutorial: https://www.youtube.com/watch?v=Z32WsUiOegs Barcode Scanner App Tutorial: https://www.youtube.com/watch?v=Ezzx0eIB4WM Onboarding UI Screen Tutorial: https://www.youtube.com/watch?v=CQlA2p--oEg Date Picker & Time Picker Tutorial: https://www.youtube.com/watch?v=a_fGsywyL90 Face ID - Local Auth Tutorial: https://www.youtube.com/watch?v=WIkdceaOUns Fingerprint - Local Auth Tutorial: https://www.youtube.com/watch?v=qTuVurGvdbM 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 SHARE | SUBSCRIBE | LIKE FOR MORE VIDEOS LIKE THIS ********* SOCIAL MEDIA: Follow Us :-) Twitter | https://twitter.com/HeyFlutter_ Linkedin | https://www.linkedin.com/company/heyflutter LEARN MORE SOURCE CODE | https://github.com/JohannesMilke ARTICLES | https://medium.com/@JohannesMilke PLAYLISTS All Flutter Videos | https://www.youtube.com/watch?v=3f9oqIvxNc0&list=PL1WkZqhlAdC_MPQBXUFwAHviZ3XkWPDBG Widgets - Flutter | https://www.youtube.com/watch?v=1nEmFuX1Cig&list=PL1WkZqhlAdC8enpcvzv_uAS9FmHTDOCJ8 Plugins - Flutter | https://www.youtube.com/watch?v=3f9oqIvxNc0&list=PL1WkZqhlAdC9shbzjQao6cdzqB_Wu7Hr4 Animations - Flutter | https://www.youtube.com/watch?v=RLPZzDOPXG4&list=PL1WkZqhlAdC9pQE4nd9oAJi5eM9YXJeji Designs - Flutter | https://www.youtube.com/watch?v=aLwjk-G2Qik&list=PL1WkZqhlAdC-i3Vs_HBQw9BPT9-_zMSun Firebase - Flutter | https://www.youtube.com/watch?v=IruuzPydPz4&list=PL1WkZqhlAdC9TgTee50FWiiwVZ6kQg4W7 State Management - Flutter | https://www.youtube.com/watch?v=8H3bwxxla4Y&list=PL1WkZqhlAdC-GNyxQbfn8Db9pR6bRcQuw CREDITS Copyright song "Corporate Technology" by scottholmesmusic.com #Flutter #Tutorial #JohannesMilke LIKE & SHARE & ACTIVATE THE BELL Thanks For Watching :-) http://bit.ly/JohannesMilke