Open Radar

 
Summary:
In the EAWiFiUnconfiguredAccessoryBrowserDelegate protocol, the method didFindUnconfiguredAccessories provides an accessories parameter of type Set<NSObject>. Attempting to cast members of this set as type EAWiFiUnconfiguredAccessory can result in an app crash, and ultimately prevents 3rd party app from being able to configure via WAC.

Steps to Reproduce:
Create a Single View iOS app using Swift
Add a class that implements the EAWiFiUnconfiguredAccessoryBrowserDelegate
Implement a function to handle the delegate callback - func accessoryBrowser(browser: EAWiFiUnconfiguredAccessoryBrowser!, didFindUnconfiguredAccessories accessories: Set<NSObject>!)

Using the following code inside the above function: 
for object in accessories {
  if let accessory = object as? EAWiFiUnconfiguredAccessory {
    println("success")
  } else {
    println("\(object)")
  }
}
Will result in the console logging a description of the object, describing its class as EAWiFiUnconfiguredAccessory.

Using the following code:
for object in accessories {
  let accessory = object as! EAWiFiUnconfiguredAccessory
}
Will crash the application, and will log the following message:
"Could not cast value of type 'EAWiFiUnconfiguredAccessory' (0x1009ee430) to 'EAWiFiUnconfiguredAccessory' (0x19539a6c8)."

Furthermore the following line:
object is EAWiFiUnconfiguredAccessory
Returns false.


Expected Results:
The members of the accessories collection should be allowed to be cast as an EAWiFiUnconfiguredAccessory class.

Actual Results:
The members of the accessories collection are not recognized as instances of EAWiFiUnconfiguredAccessory.


Version:
8.3 (12F70)

Notes:


Configuration:
iPhone 6 64GB Verizon, using WiFi

Attachments: