HarmonyOS 鸿蒙Next @ohos.file.PhotoPickerComponent (Photo Picker组件)

demo：
import { photoAccessHelper } from '@kit.MediaLibraryKit';
import { BusinessError } from '@kit.BasicServicesKit';
import { image } from '@kit.ImageKit';
import { fileIo as fs, picker } from '@kit.CoreFileKit';
let selectUris: string[] = [];
@Entry
@Component
struct Index {
@State message: string = ‘Hello World’;
build() {
Column() {
Button(‘打开相册’)
.onClick(() => {
//创建图库选择器对象实例
let PhotoSelectOptions = new photoAccessHelper.PhotoSelectOptions();
PhotoSelectOptions.MIMEType = photoAccessHelper.PhotoViewMIMETypes.IMAGE_TYPE;
PhotoSelectOptions.maxSelectNumber = 5;
const photoViewPicker =new photoAccessHelper.PhotoViewPicker();
//调用select()接口拉起图库界面进行文件选择,文件选择成功后，返回PhotoSelectResult结果集
photoViewPicker.select(PhotoSelectOptions).then(async (photoSelectResult: picker.PhotoSelectResult) => {
//用一个全局变量存储返回的uri
selectUris = photoSelectResult.photoUris;
console.info(‘photoViewPicker.select to file succeed and uris are:’ + selectUris);
}).catch((err: BusinessError) => {
console.error(Invoke photoViewPicker.select failed, code is ${err.code}, message is ${err.message});
})
})
Button(‘creatPixelMap’)
.margin({ top: 10 })
.onClick((event: ClickEvent) => {
//使用fs.openSync接口，通过uri打开这个文件得到fd
let file = fs.openSync(selectUris[0], fs.OpenMode.READ_ONLY);
console.info('file fd: ’ + file.fd);
//根据文件fd创建imagSource
const imageSource: image.ImageSource = image.createImageSource(file.fd);
let key = [image.PropertyKey.IMAGE_WIDTH, image.PropertyKey.IMAGE_LENGTH, image.PropertyKey.DATE_TIME_ORIGINAL];
imageSource.getImageProperties(key).then((data) => {
console.info(JSON.stringify(data));
}).catch((err: BusinessError) => {
console.error(JSON.stringify(err));
});
})
}
.height(‘100%’)
.width(‘100%’)
}
}

读取、编辑EXIF信息，参考文档：https://developer.huawei.com/consumer/cn/doc/harmonyos-guides-V5/image-tool-V5