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ios5methodsperformselector

When and why to use performSelector - iOS

I have been trying to figure out why and how to use performSelector. I did come across Apple Docs. However, I am not able to fully understand it.

Would anyone be able to help me out in explaining this?

Solution

  • From Apple's documentation:

    the performSelector: method allows you to send messages that aren’t determined until runtime

    Longer story:

    You can send messages to objects without prior knowledge of whether the object implements this particular method. For example:

    NSString *astring = @"test";

[test dance]; // Doesn't compile
[test performSelector:@selector(dance)]; // Doesn't make sense but compiles