CODEWITHSUNDEEP
iosxcodecore-dataswift3
icekomo
icekomo

Reputation: 9466

Updating a Bool on load in coredata

I'm trying to check to see if the app has already been installed and if so, delete all pending local notifications. I'm trying to use this code, but it doesn't seem to be saving correctly to my Core Data.

// check to see if the app has already been installed

    let global = Global(context:coreDataStack.managedContext)

    print("Has the app been installed before = \(global.wasLoaded)") // returns false

    if(global.wasLoaded == false){

        print("remove local notifications")
        // remove all notifications
        center.removeAllPendingNotificationRequests()

        global.wasLoaded = true
        coreDataStack.saveContext()
        print("Has the app been installed before = \(global.wasLoaded)") // returns true
    }

The next time I run the app, the wasLoad bool comes back as false still. Do I have run a fetch request here to make this work properly?

Upvotes: 0

Views: 62

Answers (1)

jjatie
jjatie

Reputation: 5332

Each time you're making a new Global managed object, so it always has the default value. To achieve what you want, you'd have to fetch the already set Global managed object and check it's properties.

Core Data is a very heavy solution to this problem, a better one would be to use UserDefualts like this:

    if UserDefaults.standard.bool(forKey: "isFirstLaunch") == false {
        // Perform first launch actions

        UserDefaults.standard.set(true, forKey: "isFirstLaunch")
    }

    // Continue with regular setup

You compare to false because bool(forKey:) returns false if the value was never set for a given key.

Upvotes: 3

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