public void unsubscribe(String topic) {
if (androidClient.isConnected()) {
try {
androidClient.unsubscribe(topic);
} catch (MqttException err) {
Log.i(DEBUG_TAG, err.getLocalizedMessage());
}
} else {
Log.i(DEBUG_TAG, "Could not unsubscribe. Client is not connected. Please connect first.");
}
}
public void disconnect() {
if (androidClient.isConnected()) {
try {
androidClient.disconnect();
Log.i(DEBUG_TAG, "Client Disconnected");
} catch (MqttException err) {
Log.i(DEBUG_TAG, err.getLocalizedMessage());
}
} else {
Log.i(DEBUG_TAG, "Client is already disconnected");
}
}
public void publish(String topic, byte[] payload) {
if (androidClient.isConnected()) {
try {
androidClient.publish(topic, payload, qualityOfService, false);
} catch (MqttPersistenceException e) {
Log.i(DEBUG_TAG, e.getLocalizedMessage());
} catch (MqttException e) {
Log.i(DEBUG_TAG, e.getLocalizedMessage());
}
} else {
Log.i(DEBUG_TAG, "Could not publish. Client is not connected. Please connect first.");
}
}
public boolean subscribe(final String topic) {
if (androidClient.isConnected()) {
try {
androidClient.subscribe(topic, qualityOfService);
isSubscribed = true;
return true;
} catch (MqttException err) {
Log.i(DEBUG_TAG, err.getLocalizedMessage());
return false;
}
} else {
Log.i(DEBUG_TAG, "Could not subscribe. Client is not connected. Please connect first.");
return false;
}
}
