Question

Well, I’m creating a custom SEL like:

NSArray *tableArray = [NSArray arrayWithObjects:@"aaa", @"bbb", nil];
for ( NSString *table in tableArray ){
    SEL customSelector = NSSelectorFromString([NSString stringWithFormat:@"abcWith%@", table]);
    [self performSelector:customSelector withObject:0];
}

I got a error:
Terminating app due to uncaught exception ‘NSInvalidArgumentException’, reason: ‘-[Sync aaaWithaaa]: unrecognized selector sent to instance

but if i run it with the real method name it works!

[self performSelector:@selector(aaaWithaaa:) withObject:0];

How to solve it out?

Answer 1

You’ve already created selector from string – pass it to performSelector: method:

[self performSelector:customSelector withObject:0];

Edit: Mind, that if your method takes parameter then you must use colon when create selector from it:

// Note that you may need colon here:
[NSString stringWithFormat:@"abcWith%@:", table]