Our company has developed a product available, which measures body composition. During the measurement process, lasting 40 seconds, we require the device screen to remain illuminated. We are actively using the "Always On" feature and have set the timer on the watch to 70 minutes to prevent the screen from dimming.
However, we are encountering issues where the screen may still turn off during the measurement. Could you please provide guidance on how to keep the screen active with backlighting across all Apple Watch models during measurements?
evgzor
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I am trying to generate access token accroding to https://developer.apple.com/documentation/sign_in_with_apple/generate_and_validate_tokens for apple sign in and revoke it after. However always getting "{"error":"invalid_client"}" what I am doing wrong?
` func validateTokens(completion: (([String: Any]?, Error?) -> Void)? = nil) {
guard let code = keychain["code"],
let userId = Bundle.main.bundleIdentifier
else {
log("Failed getting token")
return
}
let paramString: [String: Any]
do {
let key = try privateKey()
let token = try jwtSignedToken(ecSECp256rPrivateKey: key)
paramString = [
"client_id": userId, //"com.MyCompany.Name",
"client_secret": token,
"grant_type": "authorization_code",
]
} catch {
return
}
let url = URL(string: "https://appleid.apple.com/auth/token")!
var request = URLRequest(url: url)
request.httpMethod = "POST"
do {
request.httpBody = try JSONSerialization.data(withJSONObject: paramString, options: .prettyPrinted)
} catch let error {
log("Account apple delete %@", error.localizedDescription)
completion?(nil, error)
}
request.addValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
let task = URLSession.shared.dataTask(with: request as URLRequest) { (data, response, error) in
guard
let response = response as? HTTPURLResponse,
error == nil
else {
print("error", error ?? URLError(.badServerResponse))
return
}
guard (200...299) ~= response.statusCode else {
log("statusCode should be 2xx, but is %@", "\(response.statusCode)")
log("response = %@", "\(response)")
return
}
if let error = error {
log("%@", error.localizedDescription)
} else {
log("token just has generated")
}
}
task.resume()
}
}
extension Data {
init?(base64URLEncodedString: String) {
let unpadded =
base64URLEncodedString
.replacingOccurrences(of: "-", with: "+")
.replacingOccurrences(of: "_", with: "/")
let padCount: Int
switch unpadded.count % 4 {
case 0: padCount = 0
case 1: return nil
case 2: padCount = 2
case 3: padCount = 1
default: fatalError()
}
self.init(base64Encoded: String(unpadded + String(repeating: "=", count: padCount)))
}
var base64URLEncodedString: String {
let base64 = self.base64EncodedString()
return String(base64.split(separator: "=").first!)
.replacingOccurrences(of: "+", with: "-")
.replacingOccurrences(of: "/", with: "_")
}
}
func jwtHeader(kid: String) -> String {
struct Header: Codable {
var alg: String
var kid: String
}
let header = Header(alg: "ES256", kid: kid)
return (try? JSONEncoder().encode(header).base64URLEncodedString) ?? ""
}
func jwtPayload(iss: String, exp: Date) -> String {
// We round the expiry date up because it’s not clear how servers are going
// to cope with fractional values.
let exp = Date(timeIntervalSinceReferenceDate: exp.timeIntervalSinceReferenceDate.rounded(.up))
struct Payload: Codable {
var iss: String
var exp: Date
var iat: Int
var aud: String
var sub: String
}
let payload = Payload(iss: iss, exp: exp, iat: 1437179036, aud: "https://appleid.apple.com", sub: Keys.appBundleId)
let encoder = JSONEncoder()
encoder.dateEncodingStrategy = .secondsSince1970
return (try? encoder.encode(payload).base64URLEncodedString) ?? ""
}
func jwtSignedToken(
kid: String = "keyId", iss: String = "teamId", exp: Date = Date().addingTimeInterval(120),
ecSECp256rKeyK keyK: Data
) throws -> String {
let header = jwtHeader(kid: kid)
let payload = jwtPayload(iss: iss, exp: exp)
let signingInput = "\(header).\(payload)"
let privateKey = try P256.Signing.PrivateKey(rawRepresentation: keyK)
let sig = try privateKey.signature(for: Data(signingInput.utf8)).rawRepresentation
return "\(signingInput).\(sig.base64URLEncodedString)"
}
func privateKey() throws -> SecKey {
let privateKeyRawBytes = [UInt8]([
///generate like in https://developer.apple.com/forums/thread/681267
])
var error: Unmanaged<CFError>?
let privateSecKey = SecKeyCreateWithData(
Data(privateKeyRawBytes) as CFData,
[
kSecAttrKeyType: kSecAttrKeyTypeECSECPrimeRandom,
kSecAttrKeyClass: kSecAttrKeyClassPrivate,
] as NSDictionary, &error)
return privateSecKey!
}
func jwtSignedToken(
kid: String = "keyId", iss: String = teamId", exp: Date = Date().addingTimeInterval(120),
ecSECp256rPrivateKey privateKey: SecKey
) throws -> String {
var errorCF: Unmanaged<CFError>?
guard let keyData = SecKeyCopyExternalRepresentation(privateKey, &errorCF) as Data? else {
throw errorCF!.takeRetainedValue()
}
let keyK = keyData.suffix(0x20)
return try jwtSignedToken(kid: kid, iss: iss, exp: exp, ecSECp256rKeyK: keyK)
}
On iOS 14 calling "itms-watchs://" calling ulr scheme opens watch app and show "Watch Face Unavailable" "This watch face is not available with your current version of watchOS". However I used to watchos 7.02 version which is latest one. And no watch face were implemented on watch app at all.
We have Mac with installed OS X server. We can remotely install ios app. But we need to run Xcode UI and Unit tests remotely. The problem is that tested devices has connected lightning MFI device and cannot be connected to XCode computer. Our goal is to run UI and Unit tests and transfer all result to Xcode server by Air. Could u please provide any suggestion how we can do it?