HarmonyOS 如何获取uris数组里面的全部图片

获取photoAssetList可以参考这段demo：

import dataSharePredicates from '@ohos.data.dataSharePredicates';

async function example() {
 console.info('getAllObjectDemo');
 let predicates: dataSharePredicates.DataSharePredicates = new dataSharePredicates.DataSharePredicates();
 let fetchOption: photoAccessHelper.FetchOptions = {
  fetchColumns: [],
  predicates: predicates
 };
 let fetchResult: photoAccessHelper.FetchResult<photoAccessHelper.PhotoAsset> = await phAccessHelper.getAssets(fetchOption);
 let photoAssetList: Array<photoAccessHelper.PhotoAsset> = await fetchResult.getAllObjects();
 console.info('photoAssetList length: ', photoAssetList.length);
}
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参考文档：https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/js-apis-photoaccesshelper-V5#getallobjects-1