Pass json response to another view controller in iOS - ios

Question

At first i just send data to server using GET method, I receive a response like below
2015-11-16 14:21:42.168 smartschool[1963:348015] Item actcode: ZQRTNN68
2015-11-16 14:21:42.169 smartschool[1963:348015] Item parentid: 8
How can i display the activation code to a label of the next viewController.
Here is my code:
#import "RegistrationViewController.h"
#interface RegistrationViewController ()
#end
#implementation RegistrationViewController
{
NSMutableData *mutableData;
#define URL #"http://192.168.1.166/bustracking/activation/requestActivationCode"
}
- (void)viewDidLoad
{
[super viewDidLoad];
}
-(IBAction)sendDataUsingGet:(id)sender{
[self sendDataToServer : #"GET"];
}
-(void) sendDataToServer : (NSString *) method
{
NSString *parentName = parent_name.text;
NSString *contactNumber = contact_number.text;
NSString *beaconid = #"145801000095";
//NSString *beaconMacAdd = #"14:58:01:00:00:95";
if(parentName.length > 0 && contactNumber.length > 0){
NSLog (#"Getting response from server...");
NSMutableURLRequest *request = nil;
// Only Difference between POST and GET is only in the way they send parameters
if([method isEqualToString:#"GET"]){
NSString *getURL = [NSString stringWithFormat:#"%#?parent_name=%#&contact_number=%#&beacon_id=%#", URL, parentName, contactNumber, beaconid];
//url = [NSURL URLWithString: getURL];
getURL = [getURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *url = [NSURL URLWithString: getURL];
request = [NSMutableURLRequest requestWithURL:url];
NSLog(#"urlinfo: %#", url);
NSLog(#"link: %#", getURL);
}
[request setHTTPMethod:method];
[request addValue: #"application/x-www-form-urlencoded; charset=utf-8" forHTTPHeaderField:#"Content-Type"];
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
NSLog(#"connection: %#", connection);
if( connection )
{
mutableData = [NSMutableData new];
}
else
{
NSLog (#"NO_CONNECTION");
return;
}
}
else
{
NSLog(#"NO_VALUES");
}
}
#pragma mark NSURLConnection delegates
-(void) connection:(NSURLConnection *) connection didReceiveResponse:(NSURLResponse *)response
{
[mutableData setLength:0];
}
-(void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
[mutableData appendData:data];
}
-(void) connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
NSLog (#"NO_CONNECTION");
return;
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSError *error = nil;
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:mutableData options:kNilOptions error:&error];
NSArray *fetchedArr = [json objectForKey:#"response"];
NSString *responseActCode;
for (NSDictionary *user in fetchedArr)
{
responseActCode = [user objectForKey:#"activation_code"];
NSLog(#"Item actcode: %#", responseActCode);
NSLog(#"Item parentid: %#", [user objectForKey:#"parent_id"]);
//NSLog(#"Item actcode: %#", [user objectForKey:#"activation_code"]);
}
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setObject:responseActCode forKey:#"HighScore"];
[defaults synchronize];
NSLog(#"from data: %#", [defaults objectForKey:#"HighScore"]);
UIAlertView *alert = [[UIAlertView alloc]
initWithTitle:#"Activation Code"
message:(#"%#", responseActCode)
delegate:nil //or self
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alert show];
}
#end

Answer 1

If the returning data is in dictionary format, declare nsdictionary in header.h class on which you wan to transfer data, similarly you can use array and string, now if you are using a storyboard, below is the method.
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
// Make sure your segue name in storyboard is the same as this line
if ([[segue identifier] isEqualToString:#"YOUR_SEGUE_NAME_HERE"])
{
// Get reference to the destination view controller
YourViewController *vc = [segue destinationViewController];
// Pass any objects to the view controller here, like...
vc.dictionary = self.dictionary.
}
}
and you want to transfer data upon cell tap this is what you have to do.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[self performSegueWithIdentifier:#"YOUR_SEGUE_NAME_HERE"" sender:self];
}
When "performSegueWithIdentifier" is called, this method automatically redirected to "prepareForSegue" method:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
NSIndexPath *indexPath= [self.tableView indexPathForSelectedRow];
// Make sure your segue name in storyboard is the same as this line
if ([[segue identifier] isEqualToString:#"YOUR_SEGUE_NAME_HERE"])
{
// Get reference to the destination view controller
YourViewController *vc = [segue destinationViewController];
// Pass any objects to the view controller here, like...
now this time its array.
vc.array= [array[indexpath.row] valueforkey#"jsonkey"];
}
}

Answer 2

There are many ways to pass data between view controllers. Here's one example:
Create a public property in "SomeViewController" class(eg: responseActCodeString) and set that property to your activation code(eg: responseActCode).
SomeViewController *someViewController = [[SomeViewController alloc] initWithNib:#"SomeViewController " bundle:nil];
someViewController.responseActCodeString = responseActCode;
[self pushViewController:someViewController animated:YES];
You can also use notifications, user defaults as an alternatives.
Also look at this link.
For storyboards add following method in initial view controller:
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
if([segue.identifier isEqualToString:#"someIdentifier"]){
SomeViewController*someViewController= (SomeViewController*)segue.destinationViewController;
someViewController.responseActCodeString = responseActCode;
}
}