How do you handle Future error in 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.

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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});

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