Calling method from another file [closed] - ios

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Closed 9 years ago.
I am a beginner in Objective-C. I would like to call the method two in file you.m from file me.m. Could you please teach me with simple example showing below to understand. Thank you!
you.h
#import <Foundation/Foundation.h>
#interface you : NSObject {
}
- (NSString *)one;
- (NSString *)two;
#end
you.m
#import "you.m"
#implementation you
- (NSString *)one {
NSString *a = #"this is a test.";
return a;
}
-(NSString *)two {
NSString *b = [self one];
return b;
}
#end
me.h
#import <Foundation/Foundation.h>
#interface me : NSObject {
}
#end
me.m
#import "you.h"
#import "me.h"
#implementation me
-(void)awakeFromNib{
//NSString *obj = [[[NSString alloc] init] autorelease];
//NSString *str = [obj two]; // dont work
//NSString *str = [self two]; // dont work
// I'd like to call method *two* from here.
NSLog(#"%#", str);
}
#end

Answer 1

In me class, create an instance of you.
you *objectYou=[you new];
As two returns a string, you need to store it :
NSString *string=[objectYou two];
In your code:
-(void)awakeFromNib{
you *objectYou=[you new];
NSString *str = [objectYou two];
NSLog(#"%#", str);
}
NOTE: Follow naming conventions. Class names must start with Capital letter like Me, You.
EDIT:
As you are learning, I would like to add one more thing, as you are calling one from two. If one is not meant to be called outside you class. You can define it in .m and remove the declaration from .h.

Answer 2

Simple, create an instance of You class in Me class and call that member function. Like so -
you *youInstance = [[you alloc] init];
NSString *retStr = [youInstance two];
Btw, its a good practice to CamelCase class names.
Also note this -
#interface you
- (NSString *) twoInstanceMethod;
+ (NSString *) twoClassMethod;
#end
NSString *retStr = [you twoClassMethod]; // This is ok
NSString *retStr = [you twoInstanceMethod]; // this doenst't work, you need an instance:
//so we create instance.
you *youInstance = [[you alloc] init];
NSString *retStr = [youInstance two];
Hope this clears some concepts...