Question

ECHOAppDelegate.m:

- (void)charlieInputTextHandler:(NSString *)theMessage {

    if (jarvisSecondTimeCheck1 == TRUE) {


    NSRunAlertPanel(@"ECHO", theMessage, @"", @"", @"");

    NSData *sendData1 = [theMessage dataUsingEncoding:NSUTF8StringEncoding];
    [[inputPipe1 fileHandleForWriting] writeData:sendData1];
    NSData *sendReturn1 = [@"\r" dataUsingEncoding:NSUTF8StringEncoding];
    [[inputPipe1 fileHandleForWriting] writeData:sendReturn1];
    [ContentsTextField1 insertText:theMessage];
    [ContentsTextField1 insertText:@"\r"];


    } else {
            NSRunAlertPanel(@"ECHO", @"The task is not running; therefore, you cannot send DATA to JARVIS.", @"", @"", @"");
    }

}

ChatController.m:

- (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message
{

    ECHOAppDelegate *echo = [[ECHOAppDelegate alloc] init];

    [echo charlieInputTextHandler:[message stringValue]];

    if(![jid isEqual:[message from]]) return;


    if([message isChatMessageWithBody])
    {
        NSString *messageStr = [[message elementForName:@"body"] stringValue];

        NSString *paragraph = [NSString stringWithFormat:@"%@\n\n", messageStr];

        NSMutableParagraphStyle *mps = [[[NSMutableParagraphStyle alloc] init] autorelease];
        [mps setAlignment:NSLeftTextAlignment];

        NSMutableDictionary *attributes = [NSMutableDictionary dictionaryWithCapacity:2];
        [attributes setObject:mps forKey:NSParagraphStyleAttributeName];
        [attributes setObject:[NSColor colorWithCalibratedRed:250 green:250 blue:250 alpha:1] forKey:NSBackgroundColorAttributeName];

        NSAttributedString *as = [[NSAttributedString alloc] initWithString:paragraph attributes:attributes];
        [as autorelease];

        [[messageView textStorage] appendAttributedString:as];

    }
}

Ok, for some reason jarvisSecondTimeCheck1 (a bool global variable) returns FALSE even though that I know 900% that it’s true because I clarified that in applicationDidFinishLaunching.

And the other part of the code:

NSData *sendData1 = [theMessage dataUsingEncoding:NSUTF8StringEncoding];
[[inputPipe1 fileHandleForWriting] writeData:sendData1];
NSData *sendReturn1 = [@"\r" dataUsingEncoding:NSUTF8StringEncoding];
[[inputPipe1 fileHandleForWriting] writeData:sendReturn1];
[ContentsTextField1 insertText:theMessage];
[ContentsTextField1 insertText:@"\r"];

Does not work either. But again, I know this works. Is it because I’m triggering charlieInputTextHandler from another delegate?

Thanks!

Answer 1

You’re missing a hell of a lot of relevant code. At a rough guess, I’d say this is a big clue as to what’s going wrong:

ECHOAppDelegate *echo = [[ECHOAppDelegate alloc] init];

You shouldn’t ever need to instantiate your app delegate more than once. I’d expect something like the following instead:

ECHOAppDelegate *echo = (ECHOAppDelegate *)[UIApplication sharedApplication].delegate;

I’m assuming you’re setting jarvisSecondTimeCheck1 on your original instance and expecting it to be set on any other instance you instantiate. This isn’t how objects work. I strongly recommend reading the iOS Application Programming Guide section on the app delegate and Learning Objective-C: A Primer.