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MQTT protocol for message sending and receiving in Android PrefaceMQTT (Message Queuing Telemetry Transport), a message protocol based on the publish/subscribe paradigm, is an extremely simple and lightweight message protocol designed for limited devices and networks with low bandwidth, high latency or unreliability.Today we will focus on the u ...

Article directory 1, Problems and Solutions 2, Implementation principle of NestedScrollingParent2LayoutImpl3 2.1 let's review the nested sliding mechanism. 2.2 take a look at nested Scrollview 2.3 implementation principle of nestedscrollingparent2layoutimpl3 I wrote one before Nested slide &nd ...

Introduction I think there must be a lot of little friends who like to travel. It's better to have a tour abroad. Before the tour, we will make all kinds of strategies on the routes of eating, wearing, living, traveling and playing, and then start with full expectation Imaginary Tourism          &ems ...

Yunqi information:[ Click to see more industry information]Here you can find the first-hand cloud information of different industries. What are you waiting for? Come on! At the end of the first quarter of 2020, a lot happened in the Android community. The Android 11 development preview has been released and offers many new features - but that's ...

You can pay attention to the author's account and the Java notebook from scratch. You can also go to the author's blog Garden to learn from the catalog. This film will be based on the black horse programmer job class video for learning and data sharing, and take notes and their own views. Welcome to study and discuss together. [learn Java note ...

1, Set in code public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //Remove title requestWindowFeature(Window.FEATURE_NO_TITLE); //Remove the status bar above the Activity getWindow().setFlags(WindowManager.LayoutParams. FLAG_FULLSCREEN , WindowManager.LayoutParams. FLAG_FULL ...

1. Download and import the dependency package of HttpClient: httpmime-4.5.2.jar httpcore-4.4.4.jar httpclient-win-4.5.2.jar httpclient-cache-4.5.2.jar httpclient-4.5.2.jar Baidu online disk link: https://pan.baidu.com/s/1aNBeVvaSm7ePZ3pDH3HeAA  Extraction code: d8tr 2. Create application in Baidu map; (1) Click the application managemen ...

Load the Workspace entry in / packages/apps/Launcher3/src/com/android/launcher3/model/LoaderTask.java. To learn about the launch process of the Launcher app, please read this article first, https://www.jianshu.com/p/0b273112cd7e 1. The Workspace load calling process is as shown in the figure Code entry:/packages/apps/Launcher3/src/com/android/l ...

1. Message mechanism 1.1 post series By looking at the source code, it is known that the sendMessageDelayed method is the last call made by post(Runnable r), postDelayed(Runnable r, long delayMillis): // post public final boolean post(Runnable r){ return sendMessageDelayed(getPostMessage(r), 0); } // postDelayed public final boolean postDe ...

background thinking code implementation A little bit of progress every dayCome on background The Android application developed was originally tested on the mobile phone, but it actually needs to be installed and used for the tablet. When it is on the mobile phone, the effect of vertical display is good, whi ...