Flutter Tutorial - Flutter Keys & Unique Key

Use the Flutter Unique Key To Preserve the state of Stateful Widgets if they moved around in the Widget tree. The main Flutter Keys are UniqueKey, ValueKey, GlobalKey & 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_unique_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 GlobalKey Tutorial: https://www.youtube.com/watch?v=jlZ8GV_3nnk ValueKey Tutorial: https://www.youtube.com/watch?v=-F_5yHm_Zso Stateful Widget Lifecycle Tutorial: https://www.youtube.com/watch?v=FL_U8ORv-2Q Email SignIn Tutorial: https://www.youtube.com/watch?v=rnHAInnjCmM Google Sign In Tutorial: https://www.youtube.com/watch?v=ogW83xGQGTg&t=10s Create Flutter Project For AppStores Tutorial: https://www.youtube.com/watch?v=4f1AO-f-jYQ Null Safety In 5 Minutes Tutorial: https://www.youtube.com/watch?v=Q_WloMNKOkU Migrate App To Null Safety Tutorial: https://www.youtube.com/watch?v=GLnQphHi1BY In-App Rating Tutorial: https://www.youtube.com/watch?v=zquHzDk7auE Detect App Background & App Closed Tutorial: https://www.youtube.com/watch?v=JyapvlrmM24 QR Code Scanner App Tutorial: https://www.youtube.com/watch?v=Z32WsUiOegs Bar Code Scanner App Tutorial: https://www.youtube.com/watch?v=Ezzx0eIB4WM TIMELINE 0:00 Introduction Unique Key 0:52 Create Example App 2:41 Stateful Widget Needs Key 3:06 Why Is Key Needed? 3:53 Add Unique Key 4:28 Where To Add Unique? 5:52 Differences Between Unique Key & Value Key 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