how to get server response and if server response is "Success" after show alert by JSON using objective c [closed] - iphone

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NSString *data = [NSString stringWithFormat:#"username=%#&password=%#",usertxt.text,pwdtxt.text,[NSNumber numberWithBool:YES]];
NSData *postData = [data dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%d", [postData length]];
// preaparing URL request to send data.
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init] ;
connection=[[NSURLConnection alloc] initWithRequest:request delegate:self];
NSString *url = [NSString stringWithFormat:URL_PATH];
[request setURL:[NSURL URLWithString:url]];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Accept"];
[request setHTTPBody:postData];
[request setTimeoutInterval:7.0];
NSURLResponse *_response;
NSError *error;
NSData *urlData = [NSURLConnection sendSynchronousRequest:request returningResponse:&_response error:&error];
NSString *str=[[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
//Print Server Response
NSLog(#"Login response:%#",str);
//Parse JSON string into an NSDictionary
NSDictionary* json = [NSJSONSerialization JSONObjectWithData:urlData
options:kNilOptions
error:&error];

Answer 1

Try This
Don't need to use JSON simply try this code to get response from server
NSString *string= [[NSString alloc]initWithFormat:#"url"];
NSLog(#"%#",string);
NSURL *url = [NSURL URLWithString:string];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:#"POST"];
NSURLResponse *response;
NSError *err;
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err];
NSLog(#"responseData: %#", responseData);
NSString *str = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
NSLog(#"responseData: %#", str);
NSString *str1 = #"1";
if ([str isEqualToString:str1 ])
{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:#"Successfully" message:#"" delegate:nil cancelButtonTitle:#"Ok" otherButtonTitles:nil, nil];
[alert show];
}
else
{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:#"Try Again" message:#"" delegate:self cancelButtonTitle:#"Try Later" otherButtonTitles:#"Call", nil];
alert.tag = 1;
[alert show];
}
if your response string is success than put this in the place of #"1"