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POaccessing method from one class to another that receives message from server
 

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  1. POaccessing method from one class to another that receives message from server
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    <p>i will explain the best i can if u need further explanation or detail please comment..</p> <p>I am having a local python server running on my computer that gives messages to client based on the request.</p> <p>I have a MAC client application in which i have 3 classes -</p> <ol> <li><p>Chatlogic class- this class initialises the connection and sends and receives the messages from the server.</p></li> <li><p>Login class - this maintains the login of user to the application , in this class i have a instance of the Chatlogic class, i can send messages through the object of the chatlogic class like this [chatLogicObject sendmessage:<em>something</em>]</p></li> </ol> <p>My problem is this = When ever i receive it comes in the chatLogic class instance and not in the LoginClass so i have a method called -(void)messageReceived in login class that should override the same method in the chatLogic class (But this does not work). How can i receive the method in the Loginclass ?</p> <p>To avoid confusion i have added my chatlogic class</p> <pre><code>#import &lt;Foundation/Foundation.h&gt; @interface chatLogic : NSObject &lt;NSStreamDelegate&gt; @property (copy)NSOutputStream *outputStream; @property (copy)NSInputStream *inputStream; @property (copy)NSString *streamStatus; -(void)initNetworkCommunications; -(void)sendMessage:(id)sender; -(void)stream:(NSStream *)aStream handleEvent:(NSStreamEvent)streamEvent; -(void)messageReceived:(NSString*)message; //i want this method to be used in some other classes @end </code></pre> <p>The implementation file is as follows</p> <h1>import "chatLogic.h"</h1> <p>@implementation chatLogic</p> <p>@synthesize inputStream ; @synthesize outputStream ; @synthesize streamStatus;</p> <p>-(id)init{</p> <pre><code>if (self == [super init]) { } return self; </code></pre> <p>}</p> <p>-(void)initNetworkCommunications{</p> <pre><code>CFReadStreamRef readStream; CFWriteStreamRef writeStream; CFStreamCreatePairWithSocketToHost(NULL, (CFStringRef)@"192.168.1.22", 80, &amp;readStream, &amp;writeStream); inputStream = (__bridge NSInputStream *)readStream; outputStream = (__bridge NSOutputStream *)writeStream; [inputStream setDelegate:self]; [outputStream setDelegate:self]; [inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode]; [outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode]; [inputStream open]; [outputStream open]; </code></pre> <p>}</p> <p>-(void)stream:(NSStream *)aStream handleEvent:(NSStreamEvent)streamEvent{</p> <pre><code>switch (streamEvent) { case NSStreamEventOpenCompleted: NSLog(@"Stream opened"); streamStatus = [[NSString alloc]initWithFormat:@"Stream opened"]; break; case NSStreamEventHasBytesAvailable: if (aStream == inputStream) { uint8_t buffer[1024]; int len; while ([inputStream hasBytesAvailable]) { len = (int)[inputStream read:buffer maxLength:sizeof(buffer)]; if (len &gt; 0) { NSString *output = [[NSString alloc]initWithBytes:buffer length:len encoding:NSASCIIStringEncoding]; if (nil != output) { NSLog(@"server said: %@",output); [self messageReceived:output]; } } } } case NSStreamEventErrorOccurred: { NSLog(@"cannot connect to the host!"); break; } case NSStreamEventEndEncountered: { break; } default: { NSLog(@"unknown event!!"); } } </code></pre> <p>}</p> <p>-(void)sendMessage:(id)sender{</p> <p>}</p> <p>-(void)messageReceived:(NSString*)message{</p> <pre><code>NSLog(@"the received message in chat logic class"); </code></pre> <p>}</p> <p>-(void)dealloc{</p> <pre><code>[inputStream close]; [outputStream close]; [inputStream release]; [outputStream release]; [super dealloc]; </code></pre> <p>}</p> <p>@end</p>
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