Isolates are separate execution threads that do not share any memory with the main execution memory heap. This means you possibly can’t access variables from the primary thread, or replace your UI by calling setState(). Unlike Android threads, Isolates are true to their name, and can't share memory (within the type of static fields, for example). Once the awaited network call is finished, update the UI by calling setState(), which triggers a rebuild of the widget sub-tree and updates the info.
Navigators work like a stack on which you'll be able to push() new routes you need to navigate to, and from which you can pop() routes if you want to “return”. In Android, you would use the Canvas and Drawables to attract images and shapes to the screen. Flutter has an identical Canvas API as well, since it's based mostly on the identical low-stage rendering engine, Skia. As a … Read More