iphone - Objective-C NSMethodSignature issue! -


basically i'm using "instancemethodsignatureforselector" part of construction of nstimer. problem below nsmethodsignature set "nil".

nsmethodsignature *signature = [[self class] instancemethodsignatureforselector:@selector(gravitymeth:sprite:)];

the selector it's looking @ below.

-(void) gravitymeth:(ccsprite*)sprite:(b2body*)body

does have because can't see problem @ all!

thanks in advance!

-(void) gravitymeth:(ccsprite*)sprite:(b2body*)body

that selector gravitymeth::, not gravitymeth:sprite:.

try:

 -(void) gravitymeth:(ccsprite*)sprite body:(b2body*)body

which yield selector of gravitymeth:body: (which more descriptive -- better still applygravitysprite:withbody:).


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