iOS 11 UIImagePicker test

ViewController.h

@import UIKit;
@import Photos;

@interface ViewController : UIViewController

@end

ViewController.m

#import "ViewController.h"

@interface ViewController () <UINavigationControllerDelegate, UIImagePickerControllerDelegate>
@end

@implementation ViewController

- (IBAction)showImagePicker:(id)sender
{
    NSLog(@"authorizationStatus = %ld", [PHPhotoLibrary authorizationStatus]);
    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    picker.delegate = self;
    [self presentViewController:picker animated:YES completion:nil];
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info
{
    NSLog(@"%@", info);
    {
        NSURL *assetURL = info[UIImagePickerControllerReferenceURL];
        PHFetchResult<PHAsset *> *result = [PHAsset fetchAssetsWithALAssetURLs:@[assetURL] options:nil];
        PHAsset *asset = result.firstObject;
        NSLog(@"%@ %@", result, asset);
    }
    {
        UIImage *image = info[UIImagePickerControllerReferenceURL];
        NSLog(@"%@", image);
    }
    {
        NSURL *URL = info[UIImagePickerControllerImageURL];
        UIImage *image = [UIImage imageWithContentsOfFile:URL.path];
        NSLog(@"%@", image);
    }
    [picker dismissViewControllerAnimated:YES completion:nil];
}

@end