flutter run function every x amount of seconds

by

build() can and usually will be called more than once and every time a new Timer.periodic is created.

You need to move that code out of build() like

Timer? timer;

@override
void initState() {
  super.initState();
  timer = Timer.periodic(Duration(seconds: 15), (Timer t) => checkForNewSharedLists());
}

@override
void dispose() {
  timer?.cancel();
  super.dispose();
}

Even better would be to move out such code from widgets entirely in an API layer or similar and use a StreamBuilder to have the view updated in case of updated data.

More Related Contents:

  1. Flutter: Run method on Widget build complete
  2. Flutter: RenderBox was not laid out
  3. How to use Google API in flutter?
  4. What are Keys in the Stateless widgets class?
  5. Flutter- wrapping text [duplicate]
  6. How do I pass non-string data to a named route in Flutter?
  7. Flutter – Collapsing ExpansionTile after choosing an item
  8. Error: Only static members can be accessed in initializers what does this mean?
  9. Flutter: Detect keyboard open and close [duplicate]
  10. ListView does not refresh whereas attached list does (Flutter)
  11. flutter ListView scroll to index not available
  12. What does the empty parentheses after the onPressed property mean in Dart?
  13. Textfield validation in Flutter
  14. how to place a listview inside a SingleChildScrollView but prevent them from scrolling separately?
  15. How to convert Flutter color to string and back to a color
  16. How to Move bottomsheet along with keyboard which has textfield(autofocused is true)?
  17. How to clear Flutter’s Build cache?
  18. Flutter: Ignore touch events on a Widget
  19. Custom AppBar Flutter
  20. Emit the data to parent Widget in Flutter
  21. How to check if Flutter Text widget was overflowed
  22. Flutter Test MissingPluginException
  23. Flutter: How to get upload / download progress for http requests
  24. Flutter: Setting the height of the AppBar
  25. How to make a full screen dialog in flutter?
  26. Use ‘ui.decodeImageFromList’ to display an image created from a list of bytes
  27. Flutter: Is it somehow possible to create App Widgets (Android) and Today Extensions (iOS)? [duplicate]
  28. How can I simulate a tap event on a Flutter widget?
  29. How do you get the document id after adding document in Cloud Firestore in Dart
  30. how to add or remove item to the the existing array in firestore ?

Leave a Comment