UniApp Design and Development Guide for Implementing Video and Photography Functions

UniApp Design and Development Guide for Implementing Camera and Photography Functions

Camera and camera are one of the commonly used functions in modern mobile phone applications. In UniApp, we can use the uni-interactive-media plug-in to achieve these functions. This article will introduce how to design and develop an application that uses UniApp to implement video and photo functions.

Design Overview
Before starting design and development, we need to determine the requirements and functionality of the application. The following is a simple design overview:

1. Users can open the camera to take pictures through the application interface.
2. Users can open the camera through the application interface to record.
3. Users can view photos and videos that have been taken.
4. Users can edit and share photos and videos.

Development steps

1. Create UniApp project
   First, we need to create a project in UniApp. You can use HBuilderX to create a new UniApp project.
2. Introducing the uni-interactive-media plug-in
   In the HBuilderX project folder, enter the /common/manifest.json file and find uni-interactive-mediaplugin and check it.
3. Use the uni-interactive-media plug-in
   Introduce the uni-interactive-media plug-in in pages that need to use the photo or video function. In the setup method of the page, obtain the permission to take photos and videos through the uni.request interface.

import { reactive } from 'vue';

export default {
  setup() {
    const state = reactive({
      cameraAuthorized: false,
      albumAuthorized: false
    });

    uni.requestAuthorization({
      scope: 'camera',
      success: (res) => {
        state.cameraAuthorized = res.authSetting['scope.camera'];
      },
      fail: () => {
         // 获取权限失败的处理逻辑
      }
    });

    uni.requestAuthorization({
      scope: 'album',
      success: (res) => {
        state.albumAuthorized = res.authSetting['scope.album'];
      },
      fail: () => {
         // 获取权限失败的处理逻辑
      }
    });

    return {
      state
    };
  }
}

4. Implementing the camera function
   Add a button on the page to trigger the camera function. Call the system's camera function through the uni.chooseImage interface and save the taken photos to the album.

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

<script>
export default {
  setup() {
    const takePhoto = () => {
      uni.chooseImage({
        sourceType: ['camera'],
        success: (res) => {
          uni.saveImageToPhotosAlbum({
            filePath: res.tempFilePaths[0],
            success: () => {
              uni.showToast({
                title: '保存成功',
                icon: 'success'
              });
            },
            fail: () => {
              uni.showToast({
                title: '保存失败',
                icon: 'none'
              });
            }
          });
        },
        fail: () => {
          uni.showToast({
            title: '拍照失败',
            icon: 'none'
          });
        }
      });
    };

    return {
      takePhoto
    };
  }
}
</script>

5. Implement the video recording function
   Add a button on the page to trigger the video recording function. Call the system's video recording function through the uni.chooseVideo interface and save the recorded video to the album.

<template>
  <button @click="recordVideo">录像</button>
</template>

<script>
export default {
  setup() {
    const recordVideo = () => {
      uni.chooseVideo({
        sourceType: ['camera'],
        success: (res) => {
          uni.saveVideoToPhotosAlbum({
            filePath: res.tempFilePath,
            success: () => {
              uni.showToast({
                title: '保存成功',
                icon: 'success'
              });
            },
            fail: () => {
              uni.showToast({
                title: '保存失败',
                icon: 'none'
              });
            }
          });
        },
        fail: () => {
          uni.showToast({
            title: '录像失败',
            icon: 'none'
          });
        }
      });
    };

    return {
      recordVideo
    };
  }
}
</script>

6. View and edit photos or videos
   Users can view and edit photos or videos that have been taken in the application interface. Photo information can be obtained through the uni.getImageInfo interface, and video information can be obtained through the uni.getVideoInfo interface. The specific operation and implementation methods depend on the project requirements.
7. Share photos or videos
   Users can share the photos or videos they take with others. This function can be achieved through the uni.share interface.

<template>
  <button @click="sharePhoto">分享照片</button>
</template>

<script>
export default {
  setup() {
    const sharePhoto = () => {
      uni.share({
        provider: 'weixin',
        type: 1,
        imageUrl: '/path/to/photo.jpg',
        success: () => {
          uni.showToast({
            title: '分享成功',
            icon: 'success'
          });
        },
        fail: () => {
          uni.showToast({
            title: '分享失败',
            icon: 'none'
          });
        }
      });
    };

    return {
      sharePhoto
    };
  }
}
</script>

Summary
Through the uni-interactive-media plug-in, we can easily implement video and photo functions in UniApp. This article briefly describes the basic steps for designing and developing video and photo functionality, along with some code examples. Based on project needs, developers can further expand and optimize functions. I hope this article will be helpful to UniApp developers when implementing video and photo functions.

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