UniApp realizes seamless connection between mini programs and native applications

UniApp is a cross-platform development framework that can seamlessly connect mini programs with native applications. This article will introduce how to use UniApp to realize the connection between mini programs and native applications, and give corresponding code examples.

UniApp is a development tool based on the Vue.js framework. Its characteristic is that it can uniformly develop and manage applications for multiple platforms such as H5, mini programs, and Apps. Developers only need to write code once and publish it to run on different platforms. This feature makes UniApp an ideal choice to achieve seamless connection between mini programs and native applications.

To realize the connection between the mini program and the native application, you first need to configure it in UniApp. In the manifest.json file of the UniApp project, add the following configuration:

"mp-weixin": {
  "usingComponents": {
    "van-button": "@/components/vant-weapp/dist/button/index"
  }
}

In the above code snippet, "van-button" is a small program's automatic Define the component and we can use it directly in UniApp. In this way, we can directly use the components of the mini program in UniApp to achieve seamless connection.

Next, let’s look at a specific example to show how to connect mini programs and native applications in UniApp. Suppose there is a button in our applet. When clicked, the camera function of the native application will be called.

First, create a button component in UniApp NativeButton.vue, the code is as follows:

<template>
  <button @click="takePhoto">拍照</button>
</template>

<script>
export default {
  methods: {
    takePhoto() {
      uni.navigateTo({
        url: '/pages/native/camera',
        success: (res) => {
          console.log('跳转成功');
        }
      });
    }
  }
}
</script>

<style scoped>
button {
  width: 100px;
  height: 40px;
  background-color: #ccc;
  border: none;
  border-radius: 4px;
  color: #fff;
}
</style>

In the above code, we created a button component and placed it in # Use the uni.navigateTo method in the ##takePhoto method to jump to the camera page of the native application.

Next, in the native application page, such as

/pages/native/camera, we can use the native API to implement the camera function. Here we take the WeChat applet as an example. The code is as follows:

Page({
  takePhoto() {
    wx.chooseImage({
      success(res) {
        const tempFilePaths = res.tempFilePaths;
        wx.saveImageToPhotosAlbum({
          filePath: tempFilePaths[0],
          success(res) {
            console.log('保存成功');
          }
        });
      }
    });
  }
})

Through the above code, we can call the camera function of the native application in the applet in UniApp and save the photos to the album. In this way, the seamless connection between mini programs and native applications is achieved.

UniApp provides us with a convenient way to connect small programs with native applications, simplifying the functions that developers originally needed to implement cumbersomely into just writing code once. Through UniApp, applications for multiple platforms can be developed simultaneously in one development environment, which improves development efficiency and facilitates user experience.

In summary, the emergence of UniApp makes the connection between small programs and native applications easier, and it is also compatible with multiple platforms. Through the UniApp development framework, we can achieve seamless connection between mini programs and native applications, providing users with a better user experience.

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