Channel Groups API for Android SDK

Channel groups allow PubNub developers to bundle thousands of channels into a group that can be identified by a name. These channel groups can then be subscribed to, receiving data from the many back-end channels the channel group contains.

Channel group operations

You can't publish to a channel group. You can only subscribe to it. To publish within the channel group, you need to publish to each channel individually.

Add channels to a channel group

Requires Stream Controller add-on

This method requires that the Stream Controller add-on is enabled for your key in the PubNub Admin Portal. Read the support page on enabling add-on features on your keys.

This function adds channels to a channel group.

Method(s)

Use the following method in the Android SDK:

Maximum number of channels

You can add up to 200 channels to a channel group per API call.

this.pubnub.addChannelsToChannelGroup()
    .channelGroup(String)
    .channels(Array)

* required

Parameter	Description
channelGroup * Type: String	The channel group to add the channels to.
channels * Type: Array	The channels to add to the channel group.
async * Type: PNCallback	PNCallback of type PNChannelGroupsAddChannelResult

Sample code

Add channels

pubnub.addChannelsToChannelGroup()
    .channelGroup("cg1")
    .channels(Arrays.asList("ch1", "ch2", "ch3"))
    .async(new PNCallback<PNChannelGroupsAddChannelResult>() {
        @Override
        public void onResponse(PNChannelGroupsAddChannelResult result, PNStatus status) {

        }
    });

Response

The addChannelsToChannelGroup() does not return actionable data, be sure to check the status object on the outcome of the operation by checking the status.isError().

{
    "service" : "channel-registry",
    "status"  : 200,
    "error"   : false,
    "message" : "OK"
}

List channels in a channel group

Requires Stream Controller add-on

This method requires that the Stream Controller add-on is enabled for your key in the Admin Portal. Read the support page on enabling add-on features on your keys.

This function lists all channels in a channel group.

Method(s)

Use the following method in the Android SDK:

pubnub.listChannelsForChannelGroup()
    .channelGroup(String)

* required

Parameter	Description
channelGroup * Type: String	The channel group for which to list channels.
async * Type: PNCallback	PNCallback of type PNChannelGroupsAllChannelsResult.

Sample code

List channels

pubnub.listChannelsForChannelGroup()
    .channelGroup("cg1")
    .async(new PNCallback<PNChannelGroupsAllChannelsResult>() {
        @Override
        public void onResponse(PNChannelGroupsAllChannelsResult result, PNStatus status) {

        }
    });

Returns

The listChannelsForChannelGroup() operation returns a PNChannelGroupsAllChannelsResult which contains the following operations:

Method	Description
getChannels() Type: List<String>	List of channels of a channel group.

Remove channels from a channel group

Requires Stream Controller add-on

This method requires that the Stream Controller add-on is enabled for your key in the Admin Portal. Read the support page on enabling add-on features on your keys.

This function removes channels from a channel group.

Method(s)

Use the following method in the Android SDK:

pubnub.removeChannelsFromChannelGroup()
    .channelGroup(String)
    .channels(Array)

* required

Parameter	Description
channels * Type: Array	The channels to remove from the channel group.
channelGroup * Type: String	The channel group from which to remove the channels.
async Type: PNCallback	PNCallback of type PNChannelGroupsRemoveChannelResult.

Sample code

Remove channels

pubnub.removeChannelsFromChannelGroup()
    .channelGroup("family")
    .channels(Arrays.asList("son"))
    .async(new PNCallback<PNChannelGroupsRemoveChannelResult>() {
        @Override
        public void onResponse(PNChannelGroupsRemoveChannelResult result, PNStatus status) {

        }
    });

Response

The removeChannelsFromChannelGroup() does not return actionable data, be sure to check the status object on the outcome of the operation by checking the status.isError().

{
    "status" : 200,
    "message" : "OK",
    "service" : "channel-registry",
    "error" : False
}

Delete a channel group

Requires Stream Controller add-on

This method requires that the Stream Controller add-on is enabled for your key in the Admin Portal. Read the support page on enabling add-on features on your keys.

This function deletes a channel group.

Method(s)

Use the following method in the Android SDK:

pubnub.deleteChannelGroup()
    .channelGroup(String)

* required

Parameter	Description
channelGroup * Type: String	The channel group to delete.
async Type: PNCallback	PNCallback of type PNChannelGroupsDeleteGroupResult.

Sample code

Delete channel group

pubnub.deleteChannelGroup()
    .channelGroup("family")
    .async(new PNCallback<PNChannelGroupsDeleteGroupResult>() {
        @Override
        public void onResponse(PNChannelGroupsDeleteGroupResult result, PNStatus status) {

        }
    });

Response

The deleteChannelGroup() does not return actionable data, be sure to check the status object on the outcome of the operation by checking the status.isError().

{
    "status" : 200,
    "message" : "OK",
    "service" : "channel-registry",
    "error" : False
}