arkts选择照片

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);