iOS push segues not keeping data

Question

I'm doing something silly here but for the life of me i cannot see it.

Push from ViewControllerA to ViewController B: No transfer of data.

Segue back from ViewControllerB to ViewController A: Data transfers.

Push from ViewControllerA to ViewController B: Previous labels and datepicker values are reset and do not stay as previously selected.

How do i get ViewControllerB labels to stay as they previously were?

I know it is something obvious, i would appreciate your extra sets of eyes!

Let me know if you need more information or anything.

Thanks peoples! All answers were helpful but best way to do it seems to be through state control. — jkd359, Feb 21 '14 at 00:00

score 0 · Accepted Answer · answered Feb 20 '14 at 01:12

You'll have to remember the state and transfer the data from A to B, and have the labels and values set in B's viewDidLoad: or somewhere else convenient.

When ViewControllerB is popped off the navigation stack, the entire object is deallocated. As you're noticing, a fresh ViewControllerB is initialized each time.

score 0 · Answer 2 · edited May 23 '17 at 11:57

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When ViewControllerB call back ViewControllerA, ViewControllerA was deallocated before, so that you can not push back data from viewcotrollerB to view controllerA. I think in this case, you can using delegate patter. Please show this question to see more detail Passing Data between View Controllers

edited May 23 '17 at 11:57

Community

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answered Feb 20 '14 at 01:25

Tan Vu

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score 0 · Answer 3 · answered Feb 20 '14 at 03:02

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I think "Unwind Segues" will be the best solution for you. Take a look on the link below:

http://pragmaticstudio.com/blog/2013/2/5/unwind-segues

answered Feb 20 '14 at 03:02

carantes

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http://stackoverflow.com/questions/12561735/what-are-unwind-segues-for-and-how-to-use-them – carantes Feb 20 '14 at 03:03

iOS push segues not keeping data

3 Answers3