How can I access my own 2 iOS app database from each other

Question

I am developing two iOS app and I want to access their database from each other.

Eg. APP1 and APP2 both developed by me, APP1 can access APP2 database and vice-versa

I read somewhere that same iOS app developer can have sandbox access authorities to access their own developed iOS app.

No, where did you read that. Its only possible if you are developing extensions with your app using group identifiers. — iphonic, Jun 01 '15 at 10:24
i think facebook app and facebook messenger app having some access authority with in each other sandbox or database. — hpDev_iOS, Jun 01 '15 at 10:29
@hpDev_iOS facebook app and facebook messenger both communicate with facebooks servers. If you provide a server that your two apps can communicate through, then you can share data. — Kyle, Jun 01 '15 at 10:47
ok....But using same groupId with in 2 iOS app, can i access each other database? — hpDev_iOS, Jun 01 '15 at 10:54

progrmr · Accepted Answer · 2016-12-01T21:42:15.910

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Yes, you can do this. You create an app group, put both apps in the same app group. Any files created in the shared file area are available to both apps. It works exactly the same way an extension shares files with its host app.

I'm currently using this to share a SQL DB between two different apps.

The shared file are can be accessed via the file manager:

NSFileManager* fileMgr = [NSFileManager defaultManager];
NSURL* sharedDirectory = [fileMgr containerURLForSecurityApplicationGroupIdentifier:appGroupId];

edited Dec 01 '16 at 21:42

answered Oct 22 '15 at 03:44

progrmr

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can you provide any link to samples/tutorials of this in action? if it is possible? – user2363025 Nov 28 '16 at 15:46
yes it is possible. I use this an app group in two apps that share a SQL DB. – progrmr Dec 01 '16 at 21:44
but how? do you have any tutorial/Demo app link or source code of example? – KuLdip PaTel Aug 28 '17 at 12:40
@KuLdipPaTel the same way you share files between an app and its own extension. That also works between two apps that are in the same app group. – progrmr Aug 29 '17 at 19:59

score -1 · Answer 2 · edited May 23 '17 at 12:17

It is true, that you can't access files from one app in another.
AFAIK you only can use a shared Keychain to share data between two apps. Take a look here for that: How to share keychain data between iOS applications

But perhaps another proposal will help you out: We developed an iOS app using CoreData and the Ensembles Framework from Drew McCormack to use the iCloud Sync. (https://github.com/drewmccormack/ensembles)

With this feature (iCloud Sync) it is able to synchronize the data between both CoreData databases and both of your apps can use the same data.

score -2 · Answer 3 · answered Jun 01 '15 at 10:30

-2

No you cannot access database in one app from another app.(Sandbox)

Because database is private to app.

answered Jun 01 '15 at 10:30

Vikas Pandey

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Yes, you can share data in a shared file area if you create an app group. – progrmr Dec 01 '16 at 21:45

How can I access my own 2 iOS app database from each other

3 Answers3