Fact: Both: initState() and didChangeDependencies() are called before build() is called . The only difference is that initState() is called before the state loads its dependencies and didChangeDependencies() is called a few moments after the state loads its dependencies.
Read moreCan initState be async?
In this example, we are going to show the way to run or call asynchronous functions, codes inside initState() in Flutter Apps. Sometimes, you may need to execute async code while initializing app. But Flutter will show an error if you add ‘async’ modifier to initState . See the example below to solve this issue.
Read moreWhat is snapshots in Dart?
A Dart snapshot is just a binary serialization of the token stream, generated from parsing the code . A snapshot is not a “snapshot of a running program”, it’s generated before the tokens are turned into machine code. So, no program state is captured in a snapshot.
Read moreWhat is snapshot hasData Flutter?
bool hasData. Returns whether this snapshot contains a non-null data value . This can be false even when the asynchronous computation has completed successfully, if the computation did not return a non-null value. For example, a Future<void> will complete with the null value even if it completes successfully.
Read moreWhat is snapshot is FutureBuilder in Flutter?
FutureBuilder<T> class Null safety . Widget that builds itself based on the latest snapshot of interaction with a Future . The future must have been obtained earlier, e.g. during State.
Read moreWhat is Future and stream in Flutter?
The difference is that Futures are about one-shot request/response (I ask, there is a delay, I get a notification that my Future is ready to collect, and I’m done!) whereas Streams are a continuous series of responses to a single request (I ask, there is a delay, then I keep getting responses until the stream dries up …
Read moreWhat is Future and stream in Flutter?
The difference is that Futures are about one-shot request/response (I ask, there is a delay, I get a notification that my Future is ready to collect, and I’m done!) whereas Streams are a continuous series of responses to a single request (I ask, there is a delay, then I keep getting responses until the stream dries up …
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