title: How to know which method performed selector in Objective-C
body: <p>I have really simple example, but I can't understand how I could get information about the method that call selector inside it. For example:</p>
  
  <pre><code>-(void)methodOne {
     [self performSelector:@selector(methodTwo:)];
  }
  -(void)methodTwo:(id)sender {
     //How to know which method performed selector???
  }
  </code></pre>
  
  <p>I think this example is pretty simple, I just need to understand this, again, the question is, how could I know from <strong>methodTwo:</strong> which method perform selector, so from which method I called <strong>methodTwo:</strong>.</p>
  
  <p>Thanks in advance!</p>