Question

i am facing a weird problem i am simply comparing two string values and doing something if it matches .. i have created a Python script server from where i get one value and the other value is local string variable. i am able to retrive the proper value fromt the server but when comparing it does not enter the loop..

This is my code in my client to compare the values

-(void)messageReceived:(NSString *)message  {

    [_messages addObject:message];
    NSLog(@"the received message is %@",message);

    if (message == @"1") 
        NSLog(@"the user is online");
    else if (message == @"0") {
        UIAlertView *alert;
        alert = [[UIAlertView alloc]initWithTitle:@"Message" message:@"The selected user is not online !" delegate:self cancelButtonTitle:@"cancel" otherButtonTitles: nil];
        [alert show];
    }
}

Here is a log that that i get showing the proper values

2012-02-25 21:44:35.376 iMessenger[2001:207] server said: 1
2012-02-25 21:44:35.377 iMessenger[2001:207] the received message is 1

can someone suggest me what is wrong .. Thanks

Answer 1

Don’t use == to compare strings. Use [message isEqualToString:@"1"] instead.