Fetch data using JSON parsing via post method in iOS7 using NSJsonSerialization - json

Question

I am new to iOS Development. Need help to parse this data using NSJSONSerialization. Data comes via post method.
Data is like this
[
{
"edition_id": "1",
"error": false,
"long_name": "Rajkot",
"message": "RESULT_OK",
"short_name": "RJT"
}
]
and code of my file is like this
NSURL *theURL = [NSURL URLWithString:#"MYURL"];
NSMutableURLRequest *theRequest = [[NSMutableURLRequest alloc] init];
[theRequest setURL:theURL];
[theRequest setHTTPMethod:#"POST"];
NSData *allCoursesData = [[NSData alloc] initWithContentsOfURL:[NSURL URLWithString:theRequest]];
NSError *error;
NSMutableDictionary *allCourses = [NSJSONSerialization JSONObjectWithData:allCoursesData options:kNilOptions error:&error];

Answer 1

NSString * uid = #"2"; // variable value
NSString *post = [NSString stringWithFormat:#"uid=%#",uid]; // post variable
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%d", [postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:#"http://localhost/my/json_post/index.php"]];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/x-www-form-urlencoded;charset=UTF-8" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody:postData];
NSURLResponse *response;
NSData *POSTReply = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:nil];
/* NSString *theReply = [[NSString alloc] initWithBytes:[POSTReply bytes] length:[POSTReply length] encoding: NSASCIIStringEncoding];
NSLog(#"json Reply : %#", theReply);
*/
NSArray *arr = [NSJSONSerialization JSONObjectWithData:POSTReply options:0 error:nil];
NSLog(#"%#",arr);
NSLog(#"%#",[arr valueForKey:#"id"]); //this is table column name
NSLog(#"%#",[arr valueForKey:#"name"]);
NSLog(#"%#",[arr valueForKey:#"surname"]);

Answer 2

Fetch data using JSON parsing via post method
NSHTTPURLResponse *response = nil;
NSError *error=nil;
NSString *post = [NSString stringWithFormat:#"Key=%#",#"value"];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%lu",(unsigned long)[postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:#"Your URL"]];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody:postData];
NSURLConnection *conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];
NSData *conn1 = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSLog(#"%#",conn1);
NSString *responseString = [[NSString alloc] initWithData:conn1 encoding:NSUTF8StringEncoding];
NSLog(#"here %#",responseString);
if(conn) {
NSLog(#"Connection Successful");
} else {
NSLog(#"Connection could not be made");
}