I got this error like the image below.
<img src="https://i.stack.imgur.com/p5pIp.jpg" alt="Image">
showSingerInfo method is defined in parent class.
How can I resolve this warning??
It looks like Clang is unable to resolve the declaration of the showSingerInfo: method.
I'm guessing that showSingerInfo: is a local method within the translation unit/class? If so try either of the following.<ol> <li>
Add the method declaration to your class header file.</li> <li>
If you do not want to publicly expose the method declaration then create a local/private category in your class implementation file and declare it there.</li> </ol>