Utility Methods API for PubNub Java SDK

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

Create Push Payload​

Description​

This method creates the push payload for use in the appropriate endpoint calls.

Method(s)​

PushPayloadHelper().setApnsPayload(PushPayloadHelper.APNSPayload).setFcmPayload(PushPayloadHelper.FCMPayload).setCommonPayload(Map<String, Object>).build()
ParameterTypeRequiredDescription
setApnsPayload()APNSPayloadOptionalSet APNs and APNs2 Payload. Associated devices will receive only the data supplied here within the pn_apns key.
setFcmPayload()FCMPayloadOptionalSet FCM Payload. Associated devices will receive only the data supplied here within the pn_gcm key.
setCommonPayload()Map<String, Object>OptionalSet common Payload. Native PubNub subscribers will receive the data provided here, together with the pn_apns, and pn_gcm objects.
build()Map<String, Object>YesBuilds the payload from the values set using the parameters.

Basic Usage​

Create Push Payload​

// Create an instance of PushPayloadHelper
PushPayloadHelper pushPayloadHelper = new PushPayloadHelper();

// Setup FCM parameters (FCMPayload)
PushPayloadHelper.FCMPayload fcmPayload = new PushPayloadHelper.FCMPayload();
// The FCMPayload includes a custom Notification object, which FCM itself uses
// to display the message automatically to end-user devices on behalf of the
// client app.
// Notification messages have a predefined set of user-visible keys
PushPayloadHelper.FCMPayload.Notification fcmNotification =
        new PushPayloadHelper.FCMPayload.Notification()
                .setTitle("Notification title")
                .setBody("Notification body text")
                .setImage("http://example.com/image.png");
fcmPayload.setNotification(fcmNotification);
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Response​

The PushPayloadHelper#build() operation returns a Map<String, Object> which can be passed directly as the message() parameter to the pubnub.publish() method.

Destroy​

Description​

Destroy frees up the threads and allows for clean exit.

Method(s)​

destroy()

Basic Usage​

pubnub.destroy();

Returns​

None

Encrypt​

Description​

This function allows to encrypt the data.

Method(s)​

To encrypt the data you can use the following method(s) in Java V4 SDK.

pubnub.encrypt(data, customCipherKey)
ParameterTypeRequiredDescription
dataStringYesThe data to encrypt.
customCipherKeyStringOptionalIf it's not provided, the cipher key from config will be used.

Basic Usage​

Encrypt part of message​

JSONParser parser = new JSONParser();
String stringToParse = "hello world";
JSONObject json = (JSONObject) parser.parse(stringToParse);
String encodedKey = "testCypher";

String payload = pubnub.encrypt(json, encodedKey);

Encrypt File Input Stream​

Description​

Encrypts input stream with a cipher key.

Method(s)​

pubnub.encryptInputStream(inputStream, cipherKey)
ParameterTypeRequiredDefaultDescription
inputStreamInputStreamYesStream with content to encrypt.
cipherKeyStringOptionalPNConfiguration.getCipherKey()Cipher key used for encryption.

Basic Usage​

pubnub.encryptInputStream(InputStream inputStream);
pubnub.encryptInputStream(InputStream inputStream, String cipherKey);

Returns​

InputStream with encrypted data.

Decrypt​

Description​

This function allows to decrypt the data.

Method(s)​

To decrypt the data you can use the following method(s) in Java V4 SDK.

pubnub.decrypt(data, customCipherKey)
ParameterTypeRequiredDescription
dataStringYesThe data to decrypt.
customCipherKeyStringOptionalIf it's not provided, the cipher key from config will be used.

Decrypt File Input Stream​

Description​

Decrypts input stream with a cipher key.

Method(s)​

pubnub.decryptInputStream(inputStream, cipherKey)
ParameterTypeRequiredDefaultDescription
inputStreamInputStreamYesStream with content encrypted data.
cipherKeyStringOptionalPNConfiguration.getCipherKey()Cipher key used for encryption.

Basic Usage​

FileInputStream encryptedInputStream = new FileInputStream("./cat_picture_encrypted.jpg");
InputStream decryptedInputStream = pubnub.decryptInputStream(encryptedInputStream, "myCipherKey");

Returns​

InputStream with decrypted data.

Get Subscribed Channel Groups​

Description​

Returns all the subscribed channel groups in a List of type String..

Method(s)​

To Get Subscribe Channel Groups you can use the following method(s) in the Java V4 SDK:

public final List<String> getSubscribedChannelGroups()

Basic Usage​

Get Subscribed Channel Groups​

List<String> groups = pubnub.getSubscribedChannelGroups();

Response​

List<String>

["channelGroup1", "channelGroup2"]

Get Subscribed Channels​

Description​

Returns all the subscribed channels in a List of type String..

Method(s)​

To Get Subscribed Channels you can use the following method(s) in the Java V4 SDK:

public final List<String> getSubscribedChannels()

Basic Usage​

Get Subscribed Channels​

List<String> channels = pubnub.getSubscribedChannels();

Response​

List<String>

["channel1", "channel2"]

Reconnect​

Description​

Call the reconnect method to force the SDK to try and reach out PubNub.

Method(s)​

To reconnect the data you can use the following method(s) in Java V4 SDK.

reconnect()

This method doesn't take any arguments.

Basic Usage​

pubnub.reconnect();

Time​

Description​

This function will return a 17 digit precision Unix epoch.

Algorithm constructing the timetoken
timetoken = (Unix epoch time in seconds) * 10000000

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

08/19/2013 @ 9:20pm in UTC = 1376961606
timetoken = 1376961606 * 10000000
timetoken = 13769616060000000

Method(s)​

To fetch Time you can use the following method(s) in Java V4 SDK:

this.pubnub.Time()
ParameterTypeRequiredDescription
asyncPNCallbackYesPNCallback of type PNTimeResult

Basic Usage​

Get PubNub Timetoken​

pubnub.time().async(new PNCallback<PNTimeResult>() {
    @Override
    public void onResponse(PNTimeResult result, PNStatus status) {
        // handle time result.
    }
});

Returns​

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

MethodTypeDescription
getTimetoken()LongReturns a long representation of current timetoken.
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