Can uniapp use native api?

With the popularity of mobile applications, developers need to master various technologies to meet the needs of different platforms. During this process, developers must have in-depth knowledge of different programming languages ​​and technologies. If you are a front-end developer and looking for a cross-platform solution, then you must have heard of uni-app. But do you know whether uni-app can use native API? We’ll delve deeper into this issue below.

1. What is uni-app?

uni-app is a cross-platform open source solution that allows developers to run on different platforms based on one coding. This means that developers can use uni-app to create a variety of applications, such as iOS, Android, Web and applet applications. uni-app is developed on the basis of vue.js framework and has built-in compiler and build tools, allowing developers to easily run applications on different platforms.

2. How does uni-app use native API?

Uni-app provides the ability to send requests to native APIs. For example, on Android and iOS platforms, we can use Javascript to interact with Bridge to access the native API and receive return results. On the Web platform, we can use the html5 standard API to access the native API. Therefore, developers can easily access features on the platform such as networking, location, flash, and more.

Specifically, on all supported platforms, uni-app provides multiple built-in APIs, including network requests, local storage, positioning, and more. In addition, uni-app also provides some official plug-ins to interact with native APIs, such as H5Plus plug-in, mpvue plug-in, etc.

3. Why use native API?

Although uni-app has made the development of cross-platform applications easier, there are still many features that cannot be achieved on uni-app. In this case, access to native APIs is crucial. For example, when an application needs to access hardware such as cameras, sensors, Bluetooth, etc.

Another example is that if we need to implement push notification function in the application, we need to use the native API and the push service of the platform. And uni-app does not provide a complete push service or API.

Therefore, the ability to use native APIs allows developers to access functions and services that are not originally part of uni-app, and better optimize and supplement the functions and features of the application.

4. How to use native API?

To use the native API in uni-app, you need to know the following:

1. When calling the native API asynchronously, you need to mark the result as asynchronous. Because when waiting for an asynchronous callback, uni-app's running stack will be interrupted. If an asynchronous callback is not used, uni-app will think that the asynchronous API has been completed and generate an error.
2. For some native APIs that require user interaction to complete, pay attention to the time issue. In this case, you need to ensure that your code does not block user actions while waiting for the native API to return results.
3. When using the native API, you can use the unified interface provided by the adpater plug-in, which can make the native API code of multiple platforms more consistent and avoid code duplication.

5. Summary

In this article, we deeply explored the issue of whether uni-app can use native APIs. Although uni-app has built-in APIs and plug-ins that allow developers to access the basic functions of cross-platform applications, when the application needs to access the native API, we can also bridge Javascript to the native API so that developers can use Native APIs to extend application functionality and features.

In general, one of the biggest advantages of uni-app is to help developers run applications on different platforms, making cross-platform development easier. At the same time, it is also important to note that it is not possible to completely share code between platforms, and some platforms require specific code or functionality.

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