Social security card information reading

In recent years, with the popularization and development of medical intelligent self-service terminal, the unattended self-service terminal realizes the patient's independent appointment, registration, report query and other services. It is not only convenient for patients to see a doctor, but also i ...

Posted by daftdog on Fri, 12 Jun 2020 12:29:19 +0200

Android system startup process analysis init process startup process

preface This series of articles briefly introduces the starting process of Android system, which will not stick to the details of the source code, so as to let readers understand the general process. In addition, we need to remind you that you need to have some C/C + + foundation to read this chapte ...

Posted by dusty on Thu, 11 Jun 2020 10:19:31 +0200

Android Studio package H5 project (2020 version)

I'm the catalog 1, Download Android Studio 2, New Android project 3, What a complete android app needs 1. Be able to access the network 2. Be able to go back, just like App 3. Customize the App icon, not a default Android robot 4. Modify application name 5. Change the color of the main interface to ...

Posted by bob_rock on Thu, 11 Jun 2020 09:22:55 +0200

Android uses Kotlin to connect to MQTT

MQTT It is a lightweight and flexible Internet of things message exchange and data transfer protocol, which is dedicated to achieving the balance between flexibility and hardware / network resources for IoT developers. Kotlin Kotlin is a programming language developed by JetBrains company. Kotlin is based on JVM, so developers can easily use it ...

Posted by RossC0 on Tue, 09 Jun 2020 08:30:15 +0200

Android wifi basic function 1

A summary This paper introduces the development interface and usage of WiFi module in the application layer of Android, including some suggestions for dealing with common problems, and finally provides a github project ...

Posted by TheChief on Tue, 09 Jun 2020 08:27:49 +0200

Basic knowledge of android component broadcast

The last blog recorded the basic knowledge of activity. This blog recorded the basic knowledge of Broadcast radio broadcast Broadcast is a mechanism to transfer information between applications. It can transfer information between different programs or within the same program. Broadcast Receiver is used ...

Posted by newcastle_unite on Tue, 09 Jun 2020 07:08:41 +0200

Basic implementation of ActionBar and ToolBar under API29

Based on Android studio to customize the top menu bar -- the basic implementation of ActionBar and ToolBar Custom ActionBar Custom ToolBar Custom ActionBar ActionBar is a window function to determine the user's location, and it can provide the user's operation and navigation module. Using Action ...

Posted by EagerWolf on Sat, 06 Jun 2020 12:30:22 +0200

Echart's basic graphic configuration and production

1. Introduce echarts ·Introducing src directly into html ·ES imports from node_ module/echarts/echarts ·Generally, VAR ecrats = require ("ecrats"); 2. js configuration 1. Echarts Initialize and bind container var echarts = Echarts.init(document.getElementById('mai ...

Posted by phpn00bf4life on Fri, 05 Jun 2020 06:07:18 +0200

Android uses GridView to load (weak reference) network pictures asynchronously (click to view)

Android uses GridView to load (weak reference) network pictures asynchronously (click to view) In the current Android development, more and more app s use the album function of Android. Using the album will use GridView to load pictures, but when loading a large number of pictures, there will be a black screen because the loading process is ...

Posted by VirtuosiMedia on Tue, 02 Jun 2020 17:57:27 +0200

Using Kotlin reflection skillfully to name by value, debugging more quickly and save money

Pain spot We often define constants, such as 1 2 3 4 5 6 7 public interface ItemType { public static final int TYPE_TEXT = 0; public static final int TYPE_IMG = 1; public static final int TYPE_VIDEO = 2; public static final int TYPE_AUDIO = 3; public static final int TYPE_LINK = 4; } When we print to see ...

Posted by Sh0t on Mon, 01 Jun 2020 03:04:06 +0200