IOS block to transfer values between pages

#import <UIKit/UIKit.h>

@interface Firstviewcontroller:uiviewcontroller

@property (Weak, nonatomic) Iboutlet Uitextfield *contenttxtfield;

@end

#import "SecondViewController.h"

#import "FirstViewController.h"

@interface Firstviewcontroller ()

@end

@implementation Firstviewcontroller

-(void) viewdidload

{

[Super Viewdidload];

Additional setup after loading the view, typically from a nib.

}

-(void) didreceivememorywarning

{

[Super didreceivememorywarning];

Dispose of any resources the can be recreated.

}

-(Ibaction) Jumptosecondbtnclick: (UIButton *) sender

{

Uistoryboard *firstsb=[uistoryboard storyboardwithname:@ "Main" bundle:nil];

Secondviewcontroller *secondctl=[firstsb instantiateviewcontrollerwithidentifier:@ "Second"];

[Secondctl compeleteblock:^ (NSString *string) {

_contenttxtfield.text=string;

}];

[Self.navigationcontroller Pushviewcontroller:secondctl Animated:yes];

}

@end

#import <UIKit/UIKit.h>

typedef void (^blockpassvalue) (NSString *string);

@interface Secondviewcontroller:uiviewcontroller

{

Blockpassvalue Myblockvalue;

}

@property (Weak, nonatomic) Iboutlet Uitextfield *valuetxtfield;

-(void) Compeleteblock: (Blockpassvalue) Myblock;

@end

#import "SecondViewController.h"

@interface Secondviewcontroller ()

@end

@implementation Secondviewcontroller

-(void) viewdidload

{

[Super Viewdidload];

Do any additional setup after loading the view.

}

-(void) didreceivememorywarning

{

[Super didreceivememorywarning];

Dispose of any resources the can be recreated.

}

-(void) Compeleteblock: (blockpassvalue) Myblock

{

Myblockvalue=myblock;

}

-(Ibaction) Backtofirstbtnclick: (UIButton *) sender

{

if (Myblockvalue)

{

Myblockvalue (_valuetxtfield.text);

}

[Self.navigationcontroller Popviewcontrolleranimated:yes];

}

@end

IOS block to transfer values between pages