title: Proper way of differentiating image uses into the iOS app without using Asset Catalog?
body: <p>Here's my images (organized in a seperate folders).</p>
  
  <p><img src="https://i.stack.imgur.com/4xkEG.png" alt="enter image description here"></p>
  
  <p>I've following file structure to show tutorials to our app users. I've a doubt regarding using following images.</p>
  
  <p>I'll show each image with <code>UIImageView</code>. There'll be three consecutive images.</p>
  
  <p>For the following line of code: <code>[UIImage imageWithName:@"intro01.png"];</code></p>
  
  <ul>
  <li>if its 4 or 4s - app will take intro@2x.png ?</li>
  <li>if its 5 or 5s - app will take intro@2x.png or intro~568h@2x.png ?</li>
  <li>if its 6 or 6+ - app will take intro@3x.png ?</li>
  </ul>
  
  <p>What about 5 or 5s? As I've added ~568h to differentiate those files, I will need to add it while passing image name?</p>
  
  <p>Please correct me if my understanding is wrong here? And also help to choose proper image accordingly.</p>
  
  <p>Thanks !</p>