Utility Methods API for Dart SDK

The methods on this page are utility methods that don't fit into other categories.

Pause

Call the pause() method to force the SDK to stop all requests to PubNub server when there are active subscribe channels.

Method(s)

To pause() the data transmission you can use the following method(s) in Dart SDK.

1pause()

This method doesn't take any arguments.

Sample code

Reference code

This example is a self-contained code snippet ready to be run. It includes necessary imports and executes methods with console logging. Use it as a reference when working with other examples in this document.

1import 'package:pubnub/pubnub.dart';
2

3void main() async {
4  // Create PubNub instance with default keyset.
5  var pubnub = PubNub(
6    defaultKeyset: Keyset(
7      subscribeKey: 'demo',
8      publishKey: 'demo',
9      userId: UserId('myUniqueUserId'),
10    ),
11  );
12

13  // Subscribe to a channel
14  var channel = "getting_started";
15  var subscription = pubnub.subscribe(channels: {channel});
16

17  subscription.messages.listen((message) {
18    print('Received message: ${message.content}');
19  });
20

21  // Pause the subscription
22  subscription.pause();
23  print('Subscription paused.');
24}

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Resume

Call the resume() method to force the SDK to try and reach out PubNub.

Method(s)

To resume() the data transmission you can use the following method(s) in Dart SDK.

resume()

Sample code

1subscription.resume()

This method doesn't take any arguments.

Time

This function returns the current timetoken value from the PubNub network.

Algorithm constructing the timetoken

1timetoken = (Unix epoch time in seconds) * 10000000

Example of creating a timetoken for a specific time and date:

108/19/2013 @ 9:20pm in UTC = 1376961606
2timetoken = 1376961606 * 10000000
3timetoken = 13769616060000000

Method(s)

To fetch Time you can use the following method(s) in Dart SDK:

1time()

Sample code

1var response = await pubnub.time();

Returns

The time() operation returns a Timetoken which contains the following operations:

Method	Description
value Type: int	Returns an int representation of current timetoken.