IOS-SDK Issue "cannot convert value of type"

Developer Tools
1

I am having an issue with using the IOS-SDK. I am getting the following error:
Cannot convert value of type ‘([SparkDevice]?, Error?) -> Void’ to expected argument type ‘(([Any]?, Error?) -> Void)?’

I appreciate any and all help, I have been at this for almost a full day now.

My IOS code is:

 @IBAction func listDevices(_ sender: Any) {
    
    var myPhoton : SparkDevice?
    SparkCloud.sharedInstance().getDevices { (devices:[SparkDevice]?, error:Error?) -> Void in
        if let _ = error {
            print("Check your internet connectivity")
        }
        else {
            if let d = devices {
                for device in d {
                    if device.name == "myNewPhotonName" {
                        myPhoton = device
                    }
                }
            }
        }
    }
        
    }
    
    
}
1 Like
2

Did you look at the example code in the docs? It shows this,

var myPhoton : SparkDevice?
SparkCloud.sharedInstance().getDevices { (sparkDevices:[AnyObject]?, error:NSError?) -> Void in
    if let e = error {
        println("Check your internet connectivity")
    }
    else {
        if let devices = sparkDevices as? [SparkDevice] {
            for device in devices {
                if device.name == "myNewPhotonName" {
                    myPhoton = device
                }
            }
        }
    }
}

I looks like from the error message that you probably need to change AnyObject to Any and NSError to Error (I think those are Swift 3 changes). Also, be sure to change “myNewPhotonName” to the name of your actual device.

3 Likes
3

Thank you! I was searching forever to find the correction I needed for Swift 3 changes.

A followup question for you: Any ideas on the correcting the following to work on Swift 3 for educational purposes? (It is from an example tutorial on https://github.com/spark/spark-sdk-ios#usage):

SparkCloud.sharedInstance().getDevices { (devices:[SparkDevice]?, error:Error?) -> Void in

It threw the following error:
Cannot convert value of type ‘([SparkDevice]?, Error?) -> Void’ to expected argument type ‘(([Any]?, Error?) -> Void)?’

I am assuming there is a similar Swift 3.0 change that would fix this.

4

That’s the same line of code, and the same error as in your original question isn’t it? Or am I missing something here?

5

You’re right, I didn’t realize it was the same as the original question :grin:

6

I am having the same issue. This with Xcode Version 8.2. Does anyone know how to fix this?

Pasted image2308×394 54.6 KB

7

@skradaroman Did you try the code I posted above?

8

Thanks Ric. It works with your suggestion. I initially missed the fact that “sparkDevices:[SparkDevice]?” should be “sparkDevices:[Any]?” instead.
It would be nice if this was up to date on the docs page.