arkts选择照片

使用photoAccessHelper相册管理器获取照片

封装照片选择方法

import { photoAccessHelper } from '@kit.MediaLibraryKit';
import { BusinessError } from '@kit.BasicServicesKit';
import { dataSharePredicates } from '@kit.ArkData';
import { abilityAccessCtrl } from '@kit.AbilityKit';


export class ImagePickerUtil {
  static async selectImages(maxSelectNumber: number = 9): Promise<string[]> {
    try {
      // 创建选择选项配置
      const options = new photoAccessHelper.PhotoSelectOptions();
      options.MIMEType = photoAccessHelper.PhotoViewMIMETypes.IMAGE_TYPE;
      options.maxSelectNumber = maxSelectNumber;

      // 创建选择器实例
      const picker = new photoAccessHelper.PhotoViewPicker();

      // 拉起图库选择界面
      const result = await picker.select(options);

      // 返回选中的图片URI数组
      return result.photoUris;
    } catch (error) {
      throw new Error(error);
    }
  }
}

调用

import { ImagePickerUtil } from "../utils/ImagePicker";
ImagePickerUtil.selectImages(30)
    .then(uris => {
    this.imageList = uris
    })
    .catch((error: BusinessError) => {
    console.error('图片选择异常:', error);
    });

获取图片元数据

通过PhotoViewPicker获取到的照片是一个临时文件，无法获取照片的元数据，需要使用fs.open获取文件的fd再进行操作

import { fileIo as fs } from '@kit.CoreFileKit';

const file = fs.openSync(image, fs.OpenMode.READ_ONLY)

const stat = fs.statSync(file.fd);