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This article mainly introduces "what is the difference between IMqttActionListener and IMqttMessageListener". In daily operation, I believe many people have doubts about the difference between IMqttActionListener and IMqttMessageListener. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the questions of "what is the difference between IMqttActionListener and IMqttMessageListener?" Next, please follow the editor to study!

1: subscribe only when subscribing, and no callback function is returned. All callbacks are handled by MqttDefaulCallback.

Public class MqttDefaulCallback implements MqttCallbackExtendedprivate Map rrpcListenerMap;private Map rrpcPatternListenerMap

MqttCallbackExtended is a bit like Guankuan.

2: the difference between IMqttActionListener and IMqttMessageListener

The former simply indicates whether the subscription is successful.

The latter indicates what to do when the subscribed topic arrives with a new Message.

At this point, the study of "what is the difference between IMqttActionListener and IMqttMessageListener" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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