how to handle response in json - ios

Question

I'm using this piece of code for hit data in url.
NSError *error;
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration delegate:self delegateQueue:nil];
NSURL *url = [NSURL URLWithString:#"http://dev1.brainpulse.org/quickmanhelp/webservice/api.php?act=registration"];
NSMutableURLRequest *request1 = [NSMutableURLRequest requestWithURL:url
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:60.0];
[request1 addValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
[request1 addValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request1 setHTTPMethod:#"POST"];
NSDictionary *mapData = [[NSDictionary alloc] initWithObjectsAndKeys: #"company_name", _CompanyName.text,
#"email_id", _Email.text,#"password", _Password.text,nil];
NSLog(#"Result: %#",request1);
NSData *postData = [NSJSONSerialization dataWithJSONObject:mapData options:0 error:&error];
[request1 setHTTPBody:postData];
NSURLResponse *response = nil;
// NSError *error = nil;
NSURLSessionDataTask *postDataTask = [session dataTaskWithRequest:request1 completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
//Handle your response here
NSLog(#"Result: %#",mapData);
NSLog(#"Result: %#",request1);
NSLog(#"Result: %#",data);
NSDictionary *dictionary = [NSJSONSerialization JSONObjectWithData:data options:0 error:&error];
NSLog(#"Result: %#",dictionary);
NSLog(#"Result error : %#",error.description);
}];
[postDataTask resume];
value of uitextfield is not store in url when i clicked on button, what should i do here?
NSError *error;
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration delegate:self delegateQueue:nil];
NSURL *url = [NSURL URLWithString:#"http://dev1.brainpulse.org/quickmanhelp/webservice/api.php?act=registration"];
NSMutableURLRequest *request1 = [NSMutableURLRequest requestWithURL:url
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:60.0];
[request1 addValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
[request1 addValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request1 setHTTPMethod:#"POST"];
//NSDictionary *mapData = [[NSDictionary alloc] initWithObjectsAndKeys: _CompanyName.text,#"company_name",
//_Email.text,#"email_id", _Password.text,#"password",nil];
NSDictionary *mapData = [[NSDictionary alloc] initWithObjectsAndKeys: #"yyyyy",#"company_name",
#"karthik.saral#gmail.com",#"email_id", #"XXXXX",#"password",nil];
NSLog(#"Result: %#",request1);
NSData *postData = [NSJSONSerialization dataWithJSONObject:mapData options:0 error:&error];
[request1 setHTTPBody:postData];
NSURLResponse *response = nil;
// NSError *error = nil;
NSURLSessionDataTask *postDataTask = [session dataTaskWithRequest:request1 completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
//Handle your response here
NSLog(#"Result: %#",mapData);
NSLog(#"Result: %#",request1);
NSLog(#"Result: %#",data);
NSDictionary *dictionary = [NSJSONSerialization JSONObjectWithData:data options:0 error:&error];
NSLog(#"Result: %#",dictionary);
NSLog(#"Result error : %#",error.description);
NSLog(#"answewrv : %#",dictionary);
NSLog(#"Result error : %#",error.description);
}];
[postDataTask resume];
this is updated code after the amendments. i am getting the same error.

Answer 1

You are wrong here:
NSDictionary *mapData = [[NSDictionary alloc] initWithObjectsAndKeys: #"company_name", _CompanyName.text,
#"email_id", _Email.text,#"password", _Password.text,nil];
It should be
NSDictionary *mapData = [[NSDictionary alloc] initWithObjectsAndKeys: _CompanyName.text,#"company_name",
_Email.text,#"email_id", _Password.text,#"password",nil];
initWithObjectsAndKeys mean: object,key, object, key

Answer 2

I have done also this type work you can see this , may be it will help you.
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration delegate:self delegateQueue:nil];
NSURL *url = [NSURL URLWithString:#" your URL "];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:60.0];
[request addValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request addValue:#"*/*" forHTTPHeaderField:#"Accept"];
[request setHTTPMethod:#"POST"];
NSString *mapData = [NSString stringWithFormat:#"username=%#&password=%#&api_key=Your key", usernameField.text,passwordField.text];
NSData *postData = [mapData dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
[request setHTTPBody:postData];
NSLog(#"%#", mapData);
NSURLSessionDataTask *postDataTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
if(error == nil)
{
NSString * text = [[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding];
NSLog(#"Data = %#",text);
NSError *error = nil;
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];
if(error!=nil)
{
NSLog(#"error = %#",error);
}
dispatch_async(dispatch_get_main_queue(), ^{
[self checkUserSuccessfulLogin:json];
});
}
else{
NSLog(#"Error : %#",error.description);
}
}];
[postDataTask resume];
}
- (void)checkUserSuccessfulLogin:(id)json
{
// NSError *error;
NSDictionary *dictionary = (NSDictionary *)json;
if ([[dictionary allKeys] containsObject:#"login"])
{
if ([[dictionary objectForKey:#"login"] boolValue])
{
[self saveLoginFileToDocDir:dictionary];
ItemManagement *i = [[ItemManagement alloc]init];
[self presentViewController:i animated:YES completion:Nil];
}
else
{
NSLog(#"Unsuccessful, Try again.");
UIAlertView *alertLogin = [[UIAlertView alloc]initWithTitle:#"Error" message:#"Wrong Username Or Password" delegate:self cancelButtonTitle:#"cancel" otherButtonTitles:nil];
[alertLogin show];
}
}
}
- (void)saveLoginFileToDocDir:(NSDictionary *)dictionary
{
NSArray *pListpaths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
NSString *pListdocumentsDirectory = [pListpaths objectAtIndex:0];
NSString *path = [pListdocumentsDirectory stringByAppendingPathComponent:#"Login.plist"];
BOOL flag = [dictionary writeToFile:path atomically:true];
if (flag)
{
NSLog(#"Saved");
}
else
{
NSLog(#"Not Saved");
}
}