NSArray *results = [context executeFetchRequest:request error:&error];

for (AccountBase *account in results) {

        _label.text = [NSString stringWithFormat:@"%@", account.email];

    }

-(IBAction)signup:(id)sender{

NSManagedObjectContext *context = [self managedObjectContext];

if (self.contactdb) {
    // Update existing device
   // [self.contactdb setValue:self.fullname.text forKey:@"fullname"];
    //[self.contactdb setValue:self.email.text forKey:@"email"];
    //[self.contactdb setValue:self.phone.text forKey:@"phone"];

} else {
    // Create a new device
    NSManagedObject *newDevice = [NSEntityDescription insertNewObjectForEntityForName:@"Account" inManagedObjectContext:context];
    [newDevice setValue:self.email.text forKey:@"email"];
    [newDevice setValue:self.password.text forKey:@"password"];

    NSLog(@"%@",newDevice);
    //[newDevice setValue:self.phone.text forKey:@"phone"];
}
NSError *error = nil;
// Save the object to persistent store
if (![context save:&error]) {
    NSLog(@"Can't Save! %@ %@", error, [error localizedDescription]);
}

[self dismissViewControllerAnimated:YES completion:nil];

- (IBAction)processLogin:(id)sender {



     NSManagedObjectContext *context = [self managedObjectContext];

    // CORE DATA
    NSFetchRequest *request = [[NSFetchRequest alloc] init];
    NSEntityDescription *entity = [NSEntityDescription entityForName:@"Account" inManagedObjectContext:context];

    // set entity for request
    [request setEntity:entity];

    // filter results using a predicate
    NSPredicate *pred =[NSPredicate predicateWithFormat:(@"email = %@"), _emailfld.text];
    NSPredicate *pred2 =[NSPredicate predicateWithFormat:(@"password = %@"), _passwordfld.text];

    // set predicate for the request
    [request setPredicate:pred];
    [request setPredicate:pred2];

    NSError *error = nil;

    // store DB usernames in results array
    NSArray *results = [context executeFetchRequest:request error:&error];

    NSLog(@"The returned results are %@",results);

    // check text field against results stored in DB
    for (Account *anAccount in results) {
        if ([anAccount.email isEqualToString:_emailfld.text] || [anAccount.password isEqualToString:_passwordfld.text]){
           // NSLog(@"Your username exists");
             NSLog(@"Your pin is correct");
 [self performSegueWithIdentifier:@"showhome" sender:sender];

        }

        else if (![anAccount.email isEqualToString:_emailfld.text] || [anAccount.password isEqualToString:_passwordfld.text]){

          [self dismissViewControllerAnimated:YES completion:nil];

           NSLog(@"Your username is bad");
        }

        else{
            [self dismissViewControllerAnimated:YES completion:nil];
           NSLog(@"Username dosent exitst");
        }

    }


}

@property (strong,nonatomic) Account *currentUser;

- (IBAction)processLogin:(id)sender {



     NSManagedObjectContext *context = [self managedObjectContext];

    // CORE DATA
    NSFetchRequest *request = [[NSFetchRequest alloc] init];
    NSEntityDescription *entity = [NSEntityDescription entityForName:@"Account" inManagedObjectContext:context];

    // set entity for request
    [request setEntity:entity];

    // filter results using a predicate
    NSPredicate *pred =[NSPredicate predicateWithFormat:(@"email = %@"), _emailfld.text];
    NSPredicate *pred2 =[NSPredicate predicateWithFormat:(@"password = %@"), _passwordfld.text];

    // set predicate for the request
    [request setPredicate:pred];
    [request setPredicate:pred2];

    NSError *error = nil;

    // store DB usernames in results array
    NSArray *results = [context executeFetchRequest:request error:&error];

    NSLog(@"The returned results are %@",results);

    // check text field against results stored in DB
    for (Account *anAccount in results) {
        if ([anAccount.email isEqualToString:_emailfld.text] || [anAccount.password isEqualToString:_passwordfld.text]){
           // NSLog(@"Your username exists");
             NSLog(@"Your pin is correct");
           AppDelegate *app=(AppDelegate *)[UIApplication sharedApplication].delegate;
           app.currentUser=anAccount;
 [self performSegueWithIdentifier:@"showhome" sender:sender];

        }

        else if (![anAccount.email isEqualToString:_emailfld.text] || [anAccount.password isEqualToString:_passwordfld.text]){

          [self dismissViewControllerAnimated:YES completion:nil];

           NSLog(@"Your username is bad");
        }

        else{
            [self dismissViewControllerAnimated:YES completion:nil];
           NSLog(@"Username dosent exitst");
        }

    }

}

*AppDelegate *app=(AppDelegate *)[UIApplication sharedApplication].delegate;
self.sometextfield.text=app.currentUser.email;