How to go from one view to another view in storyboard - ios

Question

I create Login page include (username & password & login button)
I want when to fill text field username and password if right user and password go on another page else if to be wrong give me one alert.
this is my code:
#import "Detail.h"
#implementation ViewController
{
NSString *name;
}
#synthesize Username,Password;
- (void)viewDidLoad
{
[super viewDidLoad];
}
- (IBAction)Login:(id)sender {
NSString *a = [[NSString alloc]initWithFormat:#"http://192.168.1.102/mamal/login.php?u=%#&p=%#",Username.text,Password.text];
NSString *url = [[NSString alloc]initWithContentsOfURL:[NSURL URLWithString:a]];
NSLog(#"%#",url);
if ([url isEqualToString:#"0"]) //this is wrong user & password
{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:#"ERROR" message:#"WRONG" delegate:nil cancelButtonTitle:#"Dissmis" otherButtonTitles: nil];
[alert show];
}
else
{
name = #"Mohammad";
}
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([name isEqualToString:#"Mohammad"] , [[segue identifier] isEqualToString:#"Segue"]) {
Detail *det = segue.destinationViewController;
}
}
but dosent work!!! I want only right user & password go on next page

Answer 1

You have to make triggerless segue to perform this operation. Make triggerless segue from storyboard and fire it when your username and password is right.
To create a triggerless segue, start control+dragging the segue from the containing view controller icon in the scene dock at the bottom of the scene. Drag to the destination scene like normal, and pick the segue type. Select the segue, and in the inspector, choose a segue identifier.
Then call the method [self performSegueWithIdentifier:#"Identifier" sender:nil];
when your condition is true

Answer 2

If you want to use segues I think you are missing the call to actually perform the segue after the line where you set the name
name = #"Mohammed"
[self performSegueWithIdentifier:#"mySegue" sender:self]
Being "mySegue" the identifier of your segue in storyboard.
And then, you probably want to send the new View Controller the name.
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([segue.identifier isEqualToString:#"mySegue"]) {
Detail *det = segue.destinationViewController;
det.name = name;
}
}

Answer 3

Here AuditViewController is segue name
you need to call class like this in storyboard
[self performSegueWithIdentifier:#"AuditViewController" sender:self];
Edit
Check Condition
- (IBAction)Login:(id)sender {
NSString *a = [[NSString alloc]initWithFormat:#"http://192.168.1.102/mamal/login.php?u=%#&p=%#",Username.text,Password.text];
NSString *url = [[NSString alloc]initWithContentsOfURL:[NSURL URLWithString:a]];
NSLog(#"%#",url);
if ([url isEqualToString:#"0"]) //this is wrong user & password
{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:#"ERROR" message:#"WRONG" delegate:nil cancelButtonTitle:#"Dissmis" otherButtonTitles: nil];
[alert show];
}
else
{
name = #"Mohammad";
if([name isEqualToString:#"Mohammad"])
[self performSegueWithIdentifier:#"Segue" sender:self];
//else
//NSLog(#"Can not Login");
}
}
prepareForSegue method call
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:#"Segue"])
{
Detail *det = segue.destinationViewController;
}
}