Programmer Think

It's been a long time, and we've prepared some new things for release today. When we started Android, we all know that there are SQlite database and ROOM database after Android x, and some lightweight data can be stored in the database; HarmonyOS also provides database operation and management. Basic overview Relational Database (RDB) is ...

Harmony OS device development and learning record (VII) -- sensing ambient light through photoresist Based on hispark wifi suite, harmony os 2.0 full code is adopted Note: this example shows the adc usage of photoresist, which is the same as that of human infrared sensor. 1, See the schematic diagram to determine the hardware circuit This e ...

This article is excerpted from the OHOZ team's OpenHarmony source code guide project, which can be read online( Tencent cloud,Github Pages )Contains the latest content. Hongmengzhong can use a variety of tools to compile, which can be divided into three layers: high, medium and low: Comparison of several tools: Build Tooldevelopment l ...

Bought a Runhe Hongmeng development board, but the environment was not built well for several times. The main reason is that the official documents are very confused. Record the successful construction process Based on the tutorials of the following three websites, the system is Ubuntu 20.04. This article is to build the environment under Ub ...

Catalogue 1, Introduction to clock card: II. Construction of development environment: Step 1: create an empty project file: Develop cards using JS: Card configuration in "forms" tab: Fixed point / regular refresh of card: Clock card profile: Card layout: Create card: To create a card database: Card application initializatio ...

4. File IO Reference books: The contents of these two books are similar. The first one has a more detailed description of knowledge points, which is suitable for beginners; The second book is more direct. It is an introduction to various functions. It is suitable for use as a dictionary. If you don't understand it, go and have a look. To ...

Analysis of 100 blogs This article is: (console article) | a concept that makes many people vague Relevant articles of the file system are: v62.02 Hongmeng kernel source code analysis (file concept) | why do you say everything is a file v63.04 Hongmeng kernel source code analysis (file system) | using library management to say file sys ...

brief introduction          This series of articles records the author's learning experience in learning HarmonyOS mobile application development in the first month of his junior year. This article is the project of wechat chat interface, which has several functions 1. Chat information function, includi ...