title: Image picker or file chooser for OS X Cocoa
body: <p>In my application i need to pick up an image from filesystem. I know how to do it in iOS but no idea to make it in OS X. 
  Is there any tool like imagePicker or file chooser for OS X?
  Need help please.</p>
  
  <p>In iOS i use this:</p>
  
  <pre><code>UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
  imagePicker.delegate = self;
  imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
  </code></pre>
  
  <p>Thanks in advance!</p>