In Objective-C, you can initialize a method or function at runtime using dynamically loaded Objective-C code. Objective-C provides a method called class_addMethod that allows you to add a new method to a class at runtime. Here's an example:
#import
// define a new method
void dynamicMethodIMP(id self, SEL _cmd)
{
NSLog(@"New dynamic method");
}
// add the new method to a class at runtime
Class classToAddMethodTo = [SomeClass class];
SEL selector = @selector(newMethod);
IMP implementation = (IMP)dynamicMethodIMP;
if (!class_addMethod(classToAddMethodTo, selector, implementation, "v@:"))
{
NSLog(@"Failed to add new method");
}
else
{
NSLog(@"New method added successfully");
}
In this example, we define a new method called dynamicMethodIMP that takes an object self and a selector _cmd as its parameters. We then use the class_addMethod method to add this method to the SomeClass class. The selector parameter specifies the name of the method, the implementation parameter specifies the actual implementation of the method, and the "v@:" parameter specifies the method type encoding.
Once the method has been added, we can call it like any other method:
SomeClass *obj = [[SomeClass alloc] init];
[obj newMethod];
This will call the dynamically added dynamicMethodIMP method. Note that it's important to use a unique selector name to avoid conflicts with existing method names.