How To Pass Data Between View Controllers in Swift (Xcode 11) | iOS for Beginners

Passing data between view controllers is an essential part of making an app. Let's go over two different ways to pass data between controllers - through closure completion handlers and notifications.

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[iOSAcademy]

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[tahevol]

Thank you. This helped me a lot with NC. The concept is simple, but I was hung up for a long time getting text out of a function on one VC and into a labels on other VCs. You made the components of the NC Post and Observer system clear.

[heliumstein]

helpful but the zoom in feature you have when presenting is disorientating

[BranGaming]

i love how you explain those different method, not just like showing only the code, thanks a lot

[volodya-nrg]

Thanks for the video tutorial. The Observer was the most interesting place.

[GG-hkiz]

How do you manage to explain any concept with such a simplicity?

[dugrut]

when you messed up with the button, on the OtherViewController, at first I thought I'm really lost, how is then actually possible....?

[BalaaLyf]

Please upload one more video for this pass data.. Multiple labels and multiple textfields.. Data transfer and save it

[rafatwasef]

Thanks A lot that is great
I have a question how to switch to other story board from NSObject class I used what you wrote but it said no present in NSObject please help me

[Christian]

Your videos are great, but zooming so often might be little bit distracting and hard to follow. You might want to stick with one view and make the font size bigger and it will be fine. Thank you for your videos.

[RyeGuyWpg]

This doesn't seem to be working when I try to do it the other way. Push data from the first vc to the second. I am posting the notification but I have to do it before pushing the second view controller and the second vc never receives the notification.

[vspianist]

i tested this on my iPhone and the keyboard doesn't dismiss, how do i dismiss the keyboard

[chho]

both method are super advanced, to be honest not suitable for newbie, only for swift experts. but thanks for share anyway

[asherazeem]

That a lot bro, it is a good way for moving data from A-> B or B->A Controller.

[andrew]

For me, I am still unable to see the completionHandler in my initial viewcontroller.
The error says "Value type of 'ViewController' has no member 'completionHandler' " I have added public in front of the variable

[LeagueRandomPlayer]

Great Video!!! saved me, but how do you manage to do all zooms while recording? its so epic since i have bad sight, which software do you use?

[shoilett]

What about using segues? Are segues considered outdated?

[PFSGMBH]

Thanks for the excellent tutorial.

I have used the notification solution to send an object from the second to the first viewController.

But what about sending an object from the first to the second. I was setting the observer and a different notification name and pushed the second viewController on the stack by . But the notification does not get noted .

Any idea how to get the object to the second ViewController ?

[bearishlilly]

how does one capture a global variable data from one view controller to another without using segue or moving to a new viewcontroller?

[maryannadelman]

Good tutorial! Question: using the completionHandler version, would it be possible to have the save button on vc2 make an image on vc1 switch to another image?