Load another View after successful TouchID login - ios

Question

I played around a bit with TouchID and I have the following question:
After successful TouchID login, how do I present a new ViewController?
The code in the viewController.m is:
#import "ViewController.h"
#import LocalAuthentication;
#import "SVProgressHUD.h"
#interface ViewController ()
#end
#implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
LAContext *context = [[LAContext alloc] init];
NSError *error;
// check if the policy can be evaluated
if (![context canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:&error])
{
NSLog(#"error:%#", error);
NSString *msg = [NSString stringWithFormat:#"Can't evaluate policy! %#", error.localizedDescription];
[SVProgressHUD showErrorWithStatus:msg];
return;
}
// evaluate
[context evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics
localizedReason:#"Please login through TouchID"
reply:
^(BOOL success, NSError *authenticationError) {
dispatch_async(dispatch_get_main_queue(), ^{
if (success) {
[SVProgressHUD showSuccessWithStatus:#"Everything Worked!"];
//Code for new viewController should come here!
}
else {
NSLog(#"error:%#", authenticationError);
[SVProgressHUD showErrorWithStatus:[NSString stringWithFormat:#"FAILED! %#", authenticationError.localizedDescription]];
}
});
}];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end
viewController.h is standart. Nothing changed in it.
Thanks for support :)

Answer 1

To present a view controller we normally use following methods
If we are using storyboard,then call following method
[self performSegueWithIdentifier:#"indentifierForViewController" sender:self];
If we are not using storyboard then we can use
NextTaskViewControler *add = [[NextTaskViewControler alloc]
initWithNibName:#"NextTaskViewController" bundle:nil];
[self presentViewController:nextTaskVC animated:YES completion:nil];
I suggest you to use UINavigationController, a specialized view controller that manages other view controllers to provide a hierarchical navigation for the user. Present a viewcontroller only for specific purpose such as presenting a photo with few actions in it.It's easy to maintain when view hierarchy becomes complex
Please go-through UINavigationController Refrence