Question

I’ve defined two @interfaces in a .h file for my iPhone app project and would like to use a NSMutableData object defined in one @interface in the other. Is this possible / how would I go about doing it?

Thanks!

---

Here’s what my code looks like. The reason I have to add another delegate for the NSConnection is because this is the second connection being made (I haven’t shown the code for the first connection).

@implementation SecondNSDownloadDelegate

@synthesize responseData;
@synthesize test;

- (void)connection:(NSURLConnection *)connection didReceiveResponse:
  (NSURLResponse *)response {
NSLog(test) <-- gives null(), this is the problem.
[self.responseDataYears setLength:0];
}
@end

@implementation ViewController

@class ViewController;
@class AnotherViewController;

@synthesize responseDataYears;
@synthesize test;

- (void)getAvailableYears {
NSString *test = @"test";
secondNSConnecterDelegate = [[SecondNSDownloadDelegate alloc] init];
[[NSURLConnection alloc] initWithRequest:[NSURLRequest 
    requestWithURL:[NSURL URLWithString:@"data_url"]] 
    delegate:secondNSConnecterDelegate];
}

@end

Answer 1

Create a reference to the other interface:

@interface A 
@property (strong) NSMutableData *data;
@end


@interface B
@property (strong) A *a;
@end

then, somewhere in the implementation for B, access the data using

NSMutableData *data = self.a.data;
...

Tim