NSClassFromString returns nil

objective-c class instance
suse picture suse · Feb 9, 2010 · Viewed 28.7k times · Source

Why does NSClassFromString return nil ? As per the definition it has to return class name. How should I take care to rectify this problem? I need to instantiate a class from string and call the method, which is in the class, using the instance created.

This is how my code looks like:

id myclass = [[NSClassFromString(@"Class_from_String") alloc] init];
[myclass method_from_class];

But the method_from_class function is not being called, control is not going into it. And my code is error free. Any idea how to solve this in Objective-C?

Answer

m.kocikowski picture m.kocikowski · Feb 16, 2011

If you are trying to instantiate a class from a static library, you must add the "-ObjC" flag to the "Other Linker Flags" build setting.

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