Sometimes you don’t want to turn the function into a Future or mark it async, so the other way to handle a Future is by using the . then function. It takes in a function that will be called with the value type of your Future. It’s similar to a Promise in JavaScript without the resolve, reject explicitness.
Read moreHow do you get rid of futures in darts?
What you can do to resolve your future is, add a . then() after the function call so it waits for the future and when it comes, converts it to the data type that you want .28 Mar 2020
Read moreHow do you wait the future to Flutter?
Sometimes you need to have results of multiple async functions before starting to work on something else. To prevent multiple awaits, chaining futures in . then(), you can simply use Future. wait([]) that returns an array of results you were waiting for.
Read moreHow do you handle Future error in Flutter?
For more granular error handling, you can register a second ( onError ) callback within then() to handle Futures completed with errors . Here is then() ‘s signature: Future<R> then<R>(FutureOr<R> Function(T value) onValue, {Function? onError});
Read moreWhat is the difference between StreamBuilder and FutureBuilder in Flutter?
FutureBuilder solves a square value and returns the result after 5 seconds, till then we show a progress indicator to the user. StreamBuilder shows a stopwatch, incrementing _count value by 1 every second.
Read moreWhat is a snapshot in Flutter?
Snapshot is the result of the Future or Stream you are listening to in your FutureBuilder . Before interacting with the data being returned and using it in your builder, you have to access it first.
Read moreHow does a Future builder work?
In future builder, it calls the future function to wait for the result, and as soon as it produces the result it calls the builder function where we build the widget .28 May 2019
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