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#import "MyCustomSegue.h"

@implementation MyCustomSegue

- (void)perform
{
    UIView *sourceView = ((UIViewController *)self.sourceViewController).view;
    UIView *destinationView = ((UIViewController *)self.destinationViewController).view;
    
    

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- (void)perform
{
    UIView *sourceView = ((UIViewController *)self.sourceViewController).view;
    UIView *destinationView = ((UIViewController *)self.destinationViewController).view;
    
    
    UIWindow *window = [[[UIApplication sharedApplication] delegate] window];
    destinationView.center = CGPointMake(sourceView.center.x,  sourceView.center.y - destinationView.center.y);
    [window insertSubview:destinationView aboveSubview:sourceView];
    

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//in MyCustomUnwindSegue.m 

// 1. beloveSubview

[window insertSubview:destinationView belowSubview:sourceView];

// instead of aboveSubview

[window insertSubview:destinationView aboveSubview:sourceView];

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#import "MyCustomUnwindSegue.h"

@implementation MyCustomUnwindSegue

- (void)perform
{
    UIView *sourceView = ((UIViewController *)self.sourceViewController).view;
    UIView *destinationView = ((UIViewController *)self.destinationViewController).view;
    
    

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#import "MyCustomUnwindSegue.h"

@implementation MyCustomUnwindSegue

- (void)perform
{
    UIView *sourceView = ((UIViewController *)self.sourceViewController).view;
    UIView *destinationView = ((UIViewController *)self.destinationViewController).view;
    
    

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- (IBAction)returnedFromSegue:(UIStoryboardSegue *)segue {
    
    NSLog(@"Returned from second view");
    
    if ([[segue identifier] isEqualToString:@"UnwindFromSecondView"]) {
        
        self.view.backgroundColor = [UIColor orangeColor];
    }
    
    

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- (UIStoryboardSegue *)segueForUnwindingToViewController:(UIViewController *)toViewController fromViewController:(UIViewController *)fromViewController identifier:(NSString *)identifier
{
    
    //how to set identifier for an unwind segue:
    
    //1. in storyboard -> documento outline -> select your unwind segue
    //2. then choose attribute inspector and insert the identifier name
    if ([@"UnwindFromSecondView" isEqualToString:identifier]) {
        return [[MyCustomUnwindSegue alloc] initWithIdentifier:identifier source:fromViewController destination:toViewController];
    }else {

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#import "MyNavController.h"
#import "MyCustomUnwindSegue.h"

@interface MyNavController ()

@end

@implementation MyNavController

- (void)viewDidLoad {

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@implementation ViewController

@synthesize TextField1, TextField2;

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    self.TextField1.placeholder = @"I am TF 1";
    self.TextField2.placeholder = @"I am TF 2";
}

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- (void)textFieldDidBeginEditing:(UITextField *)textField {

    // When start to edit the placeholder will disappear
    self.TextField1.placeholder = @"";
    self.TextField2.placeholder = @"";

    
}

- (void)textFieldDidEndEditing:(UITextField *)textField {