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Room realizes unified data management - Repo In the multi module environment, the data classes are written in one module separately, and the database can be accessed for addition, deletion, modification and query only by introducing them into other classes in use LitePal When using the framework, it is very convenient to find operations ...

Android uses Kotlin and CameraX to take photos without feeling on the desktop and screen (with source code) Requirements: realize a silent photographing without displaying the interface, and can also switch the front and rear cameras and take photos through the volume keys in the rest screen state. After the photos are successfully saved, ther ...

preface: In the process of successfully calling Gaode map api, I really encountered many problems. I feel that I have encountered all kinds of problems, such as importing jar package and For example, I found many conflicts between the two versions of grad.sok, but I did not try to resolve the conflicts between the two versions of grad.sok when ...

Effect video Jump to Baidu map for route calculation and navigation Route calculation and navigation in APP Function realization Jump mode implementation Function Description: by initializing Baidu map API, obtain the longitude and latitude of the current position as the starting point, and the entered address as the destination, t ...

Technical scheme for renewal of Andrea Preset problems before scheme integration:    if payment is considered, Alibaba's sophix is recommended. Sophix is the product of comprehensive optimization, with perfect functions, simple and transparent development, distribution and monitoring management.   if you don't consider paying, y ...

Linux deploy - (2) installation and configuration of pagoda panel The last article talked about how to install linux deploy and install linux distribution in it. The following describes how to install and configure the pagoda panel and build a basic server environment Pagoda panel is a free server management platform. You can install it on you ...

grammar In the previous article, we wrote a simple lexical analyzer. See the article for details( Kotlin writes an interpreter (1) - lexical analysis ), with words, how to combine these words into correct sentences? Here is what grammar analysis should do. First, what is grammar? In short, grammar is the rules of using words to form sentence ...

What is a Lambda expression?Lambda expressions are actually anonymous functions. In fact, a function is a function. An anonymous function is an anonymous function code. In Kotlin, function also appears as a type. Although in the current version, the flexibility of function type is not as flexible as Python, it can also be assigned and passed, w ...

1, Sample information Application Name: Brush praise expert Package name: com xcgdmmsj SHA1: 548B46CDF7D87849E3527AF87FE10A6AD29FC758 2, Malicious behavior analysis 2.1 application list details From androidmanifest XML can know that the application has applied for permission to send SMS, pop-up and vibration. Two broadcast receiver ...

modbus protocol uses [android serial communication] The purpose of this paper is to use modbus protocol for serial communication between android and host computer. Communicate with other devices through serial port to transfer data. It can be understood as the communication between computer and keyboard and mouse. I have uploaded the modbus pr ...