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HomeWeb Front-enduni-appLet's talk about the process and best practices for building a project with UniApp

Recently, UniApp, as a cross-platform development framework, has been favored by developers and has been widely used in App development. UniApp is a cross-platform application development framework launched by the DCloud team based on the Vue.js framework and WeChat mini program syntax. Developers can use it to develop applications that support multiple platforms such as Android, iOS, H5 and mini programs.

This article introduces the process, points of attention and best practices for building a project in UniApp.

Environment building

  1. Download and install HBuilderX - Official IDE
  2. Install the required toolkit

    • Install WeChat development Tools
    • Install Android Studio
    • Install Xcode

Project creation

  1. Open HBuilderX and selectNew project -> UniApp project -> Hello UniApp.
  2. Select the corresponding target platform (App, H5, mini program, quick application) and fill in the project name, path and other information. Click Create.
  3. After the project is created, you can see the basic directory structure and files. In the uni-app directory, the manifest.json file is the project configuration file, including the application name, template, page path and other information. The pages.json file is used to configure the page routing of the application, and can also configure the page style, switching animation, etc.
  4. If you want to use Vue.js for development in your project, you need to introduce the Vue.js library in index.html. In the /static directory, static resources are stored, including styles, fonts, pictures, etc. In the /components directory, store component code.

Project development

Page development

  1. In the /pages directory, store all pages, each page starts with a It exists in the form of a folder. The three files template, script, and style in the folder correspond to the structure, logic, and style of the component respectively.
  2. You can use various syntaxes of Vue.js in the page, such as v-for, v-if, etc.
  3. You can write custom components, encapsulate relevant codes and styles in a component, and use the component on the page. In the /components directory, you can create new components with the same naming method as the page.

Style development

  1. In the style tag, write ordinary CSS styles.
  2. UniApp supports scss syntax and needs to install scss tools.
  3. In order to better adapt to different screen sizes, it is recommended to use rpx instead of px as the unit. You can pass uni.$app in the style file .globalDataAccess global variables.

API call

  1. UniApp can use APIs from multiple platforms.
  2. Code related to calling the API can be placed in the mounted() method. The mounted() method indicates the function that is executed after the page has been mounted.
  3. If you need to use the WeChat applet native API, register permissions in the manifest.json file.

Debugging and packaging

  1. It is recommended to use the simulator that comes with HBuilderX for debugging. By right-clicking on the page, select Run to applet simulator, you can see the effect of application in the mini program simulator.
  2. When packaging, in the menu bar of HBuilderX, select Run->Run to mobile phone or simulator, and select the corresponding packaging platform (Android, iOS, H5, small program).
  3. After packaging is completed, check the effect on the corresponding platform.

Best Practices

  1. Make sure to reuse components and code whenever possible.
  2. Use scss for style development and global variables for screen adaptation.
  3. Put the code related to the API call in the mounted() method to ensure that the API is destroyed before the page is unloaded.
  4. Modular component code, focusing on the reusability and maintainability of components.
  5. Keep the page simple and have a good user experience.
  6. Pay attention to the readability of the code and ensure that the code is easy to maintain and modify.

In short, with the rapid development of UniApp, we can develop cross-platform applications more quickly and easily. Through the process and best practices introduced in this article, I hope it can help you better master the skills of UniApp development.

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