PerformSelector warning

Question

I\'m receiving a warning

PerformSelector may cause a leak because its selector is unknown

In the code:

<

Answer 1

You could add -Wno-arc-performSelector-leaks for WARNING_CFLAGS in the Build Settings.

Found the solution here

Answer 2

Your if ... respondsToSelector: selector won't work because your selector is just the name of the method. For your case you need to check

if ([delegate respondsToSelector: @selector(method::)]

and for the other case just for method:.

Anyway, you can supress the warning like this:

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
    [self performSelector:nextView];
#pragma clang diagnostic pop

Answer 3

This is a warning generated by the compiler because -Wundeclared-selector was used while compiling and automatic reference counting (ARC) is enabled. This can be, in general, safely ignored, as it's obvious that the selector in the variable named "selector" is unknown at compile time, as it will have its value assigned at runtime.

Answer 4

You can also use objc_msgSend instead of performSelector, as described here.

Answer 5

Easiest way is adding this macro to your pch File. Or .m file..

#pragma GCC diagnostic ignored "-Wundeclared-selector"