#import <Photos/Photos.h>

    NSURL *assetURL = info[UIImagePickerControllerReferenceURL];
    PHFetchResult *assets = [PHAsset fetchAssetsWithALAssetURLs:@[assetURL] options:nil];
    if (assets.count < 1) {
        return;
    }
    PHAsset *asset = [assets firstObject];
    if (asset.mediaType == PHAssetMediaTypeImage) {
        PHImageRequestOptions *options = [PHImageRequestOptions new];
        options.synchronous = NO;
        options.networkAccessAllowed = YES;
        options.resizeMode = PHImageRequestOptionsResizeModeExact;
        options.version = PHImageRequestOptionsVersionCurrent;
        options.deliveryMode = PHImageRequestOptionsDeliveryModeHighQualityFormat;
        NSString *path = [NSString stringWithFormat:@"%@/%@.jpg", NSTemporaryDirectory(),[NSString nowTimes]];
        [[PHImageManager defaultManager] requestImageDataForAsset:asset
                                                          options:options
                                                    resultHandler:^(NSData * _Nullable imageData, NSString * _Nullable dataUTI, UIImageOrientation orientation, NSDictionary * _Nullable info) {
                                                        [imageData writeToFile:path atomically:YES];
                                                        
                                                    }];
    }