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What is the method to place a listener within initState() in Flutter?

asked 2023-07-21 12:39:51 +0000

pufferfish gravatar image

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answered 2023-07-21 12:59:02 +0000

scrum gravatar image

To place a listener within initState() in Flutter, you can use the addListener() method on any StreamSubscription. Here's an example:

StreamSubscription _subscription;

void initState() {
  _subscription = myStream.listen((data) {
    // handle incoming data here

void dispose() {

In this example, we first create a StreamSubscription object called _subscription. Then, in our initState() method, we call the listen() method on our stream (in this case, myStream) and pass in a callback function that will be called every time new data is emitted by the stream. Finally, in our dispose() method, we call the cancel() method on the subscription to prevent any memory leaks.

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Asked: 2023-07-21 12:39:51 +0000

Seen: 18 times

Last updated: Jul 21 '23