Access string from firstviewcontroller in fourthviewcontroller objective c

Question

Hi can I access a string from firstviewcontroller in fourthviewcontroller. I used following code. But when I go to the fourthviewcontroller string is null.

firstviewcontroller.m
#import "Fourthviewcontroller.h"

Fourthviewcontroller view = [[Fourthviewcontroller alloc] init];
view.devInText = devInput.text; //devInput is a UItextfield
NSLog(@"%@",view.devInText); // output is correct 

fourthviewcontroller.h
@property (nonatomic, strong) NSString *devInText;

fourthviewcontroller.m
NSLog(@"%@",_devInText); // output displays null

You are alloc and initialize your view so that's why it is always null — Jitendra Modi
– Jitendra Modi, Commented Sep 12, 2017 at 6:18
Do one one thing Compare , NSLog(@"%@", view) and self (in fourthviewcontroller.h) and let me know what is difference — Prashant Tukadiya
– Prashant Tukadiya, Commented Sep 12, 2017 at 6:19
You are navigating from firstviewcontroller to fourthviewcontroller ?? — Jitendra Modi
– Jitendra Modi, Commented Sep 12, 2017 at 6:20
Show more code, How you are navigating from firstviewcontroller to fourthviewcontroller? — Neha Gupta
– Neha Gupta, Commented Sep 12, 2017 at 6:36
Best way is use singleton design pattern galloway.me.uk/tutorials/singleton-classes — kb920
– kb920, Commented Sep 12, 2017 at 7:12

laxman khanal · Accepted Answer · 2017-09-12 06:36:49Z

1

I see two approaches:

Make the string Global variable and set it from VC1 and later on
access it from VC4 (not preferred).
While instantiating destination VC pass value for variable
from VC1 -> VC2 -> VC3 -> VC4, in this way you can get the required data in VC4.

answered Sep 12, 2017 at 6:36

laxman khanal

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