title: How to add image in PHAsset and delete it from photo library?
body: <p>I am working on an app like hiding photos and I want to move the images to my app so for that I have to import images from photo library and delete that image from library but I cant understand how to work with <code>PHAssets</code> and where to implement.</p>
  
  <p>I used the UIPickerview to pick the image and then delete it from library please anyone can help me for that </p>
  
  <p><strong>This the picker where I get image :</strong></p>
  
  <pre><code>UIImage *chosenImage = info[UIImagePickerControllerEditedImage];
  </code></pre>
  
  <p><strong>And this is for delete but what is asset :</strong> </p>
  
  <pre><code>[[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
      [PHAssetChangeRequest deleteAssets:formatWithOrientation];
  } completionHandler:^(BOOL success, NSError *error) {
      NSLog(@"Finished deleting asset. %@", (success ? @"Success." : error));
  }];
  </code></pre>