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iOS Build a Diary App Using Core Data Inserting and Saving Data Inserting a Managed Object

Posted by Mike Bentley
Mike Bentley
1,588 Points

Inserting data in core data from JSON in background.

Can anyone help me get started on this, I have the example Diary app working, what I want to do is populate the core data stack using a JSON request in the background, similar to the examples in the Blog Reader or the background requests in the Rabit examples without using parse.com.

Im guessing, a new object class, call in on list didload to go in background an download the data, ( not sure how ) then 'sync' or just overwrite the exising list in core data.

I have seen lists can us xml, is it easier to just download an xml file and cache is somehow instead of using core data?

2 Answers

Alex Cevallos
Alex Cevallos
16,551 Points
Alex Cevallos
Alex Cevallos
16,551 Points

Hey mike, are you asking how to store JSON within core data?

Mike Bentley
Mike Bentley
1,588 Points
Mike Bentley
Mike Bentley
1,588 Points

I guess so, I have the diary app reading and writing to core data. But I want to get the date from a JSON Request so need to do the JSON Request then convert to a Dictionary then to core data. ( I think ).

Basically I want the app to work offline, and be fast so I need to load the JSON Data in the background. I have the Blog Post app reading the JSON Data directly but it takes time to open while it gets the data.

I guess Im Looking for an easy way to convert the Dictionary that I made from the JSON to core data.

Erion Vlada
Erion Vlada
13,496 Points

Look up Cocoapods online. There are multiple pod (API’s) that have been made by other people which you can use for free. Alternatively, watch these Stanford lecture, it is much more in depth than these videos for core data and should get you up and running quickly. Lecture 12 - (https://www.youtube.com/watch?v=2Z5-2tZrbPM), also watch lecture 13 - (https://www.youtube.com/watch?v=N2sZ9IjDBzs)

Hope this helps.