Cómo convertir "SEL" y " id " a NSString?

Question

Cómo convertir "SEL" y " id " a NSString?

id parent;
SEL selector;

// lot's of code...

if ([parent respondsToSelector:selector]) {

}
else {
    // This doesn't work:
    NSString *errorMessage = [NSString stringWithFormat:@"%@ in class %@ doesn't exist!", selector, parent];
}

¿Cómo convertir "SEL" e "id" a una cadena?

35

objective-c ios nsstring selector

Author: Keavon, 2010-12-20

Source

1 answers

score 80 · Accepted Answer

Llamar NSStringFromSelector() pasar su selector como argumento para obtener la cadena de selector, y usar [parent class] para la clase del objeto parent:

NSString *errorMessage = [NSString stringWithFormat:@"%@ in class %@ doesn't exist!",
    NSStringFromSelector(selector), 
    [parent class]];