After staring motionActivityUpdates, any attempt to stop it is not working. Here is the code that I am using for starting the motionactivity. There is a similar question without any answers and it is in C. Reading the documentation this is supposed to stop activity updates
Call this method to stop the delivery of updates that you started by calling the startActivityUpdates(to:withHandler:) method. This method does not stop queries started using the queryActivityStarting(from:to:to:withHandler:) method.
var manager: CMMotionActivityManager?
var motionManager: CMMotionManager?
func startMotionMonitoring() {
motionManager = CMMotionManager()
manager = CMMotionActivityManager()
startActivityMonitoring()
}
func startActivityMonitoring() {
if !CMMotionActivityManager.isActivityAvailable() {
return
}
if CMMotionActivityManager.authorizationStatus() != .authorized {
return
}
if let man = manager {
man.startActivityUpdates(to: .main) { (activity) in
guard let a = activity else {
return
}
print("motionActive")
}
}
}
I have another function I call to stop everything
func endMotionMonitoring(){
if manager == nil && motionManager == nil { return }
manager!.stopActivityUpdates()
manager = nil
motionManager!.stopAccelerometerUpdates()
motionManager = nil
}
But it is not stopping the motion activity updates. Every time I move the phone it prints out the statement "motionActive"
Anyone know how to fix this?
Related
I'm a student studying iOS development currently working on a simple AI project that utilizes SNAudioStreamAnalyzer to classify an incoming audio stream from the device's microphone. I can start the stream and analyze audio no problem, but I've noticed I can't seem to get my app to stop analyzing and close the audio input stream when I'm done. At the beginning, I initialize the audio engine and create the classification request like so:
private func startAudioEngine() {
do {
// start the stream of audio data
try audioEngine.start()
let snoreClassifier = try? SnoringClassifier2_0().model
let classifySoundRequest = try audioAnalyzer.makeRequest(snoreClassifier)
try streamAnalyzer.add(classifySoundRequest,
withObserver: self.audioAnalyzer)
} catch {
print("Unable to start AVAudioEngine: \(error.localizedDescription)")
}
}
After I'm done classifying my audio stream, I attempt to stop the audio engine and close the stream like so:
private func terminateNight() {
streamAnalyzer.removeAllRequests()
audioEngine.stop()
stopAndSaveNight()
do {
let session = AVAudioSession.sharedInstance()
try session.setActive(false)
} catch {
print("unable to terminate audio session")
}
nightSummary = true
}
However, after I call the terminateNight() function my app will continue using the microphone and classifying the incoming audio. Here's my SNResultsObserving implementation:
class AudioAnalyzer: NSObject, SNResultsObserving {
var prediction: String?
var confidence: Double?
let snoringEventManager: SnoringEventManager
internal init(prediction: String? = nil, confidence: Double? = nil, snoringEventManager: SnoringEventManager) {
self.prediction = prediction
self.confidence = confidence
self.snoringEventManager = snoringEventManager
}
func makeRequest(_ customModel: MLModel? = nil) throws -> SNClassifySoundRequest {
if let model = customModel {
let customRequest = try SNClassifySoundRequest(mlModel: model)
return customRequest
} else {
throw AudioAnalysisErrors.ModelInterpretationError
}
}
func request(_ request: SNRequest, didProduce: SNResult) {
guard let classificationResult = didProduce as? SNClassificationResult else { return }
let topClassification = classificationResult.classifications.first
let timeRange = classificationResult.timeRange
self.prediction = topClassification?.identifier
self.confidence = topClassification?.confidence
if self.prediction! == "snoring" {
self.snoringEventManager.snoringDetected()
} else {
self.snoringEventManager.nonSnoringDetected()
}
}
func request(_ request: SNRequest, didFailWithError: Error) {
print("ended with error \(didFailWithError)")
}
func requestDidComplete(_ request: SNRequest) {
print("request finished")
}
}
It was my understanding that upon calling streamAnalyzer.removeAllRequests() and audioEngine.stop() the app would stop streaming from the microphone and call the requestDidComplete function, but this isn't the behavior I'm getting. Any help is appreciated!
From OP's edition:
So I've realized it was a SwiftUI problem. I was calling the startAudioEngine() function in the initializer of the view it was declared on. I thought this would be fine, but since this view was embedded in a parent view when SwiftUI updated the parent it was re-initializing my view and as such calling startAudioEngine() again. The solution was to call this function in on onAppear block so that it activates the audio engine only when the view appears, and not when SwiftUI initializes it.
I don't believe you should expect to receive requestDidComplete due to removing a request. You'd expect to receive that when you call completeAnalysis.
I am implementing a recorder in my application using an AVAudioRecorder, but I’m encountering a strange behavior when an interruption is triggered by the system.
Indeed, when an interrupt is caught thanks to the AVAudioSession.interruptionNotification, I call the following function:
#objc private func handleInterruption(notification: Foundation.Notification) {
guard let interruptionTypeValue = notification.userInfo?[AVAudioSessionInterruptionTypeKey] as? UInt,
let interruptionType = AVAudioSession.InterruptionType(rawValue: interruptionTypeValue)
else { return }
switch interruptionType {
case .began:
pause()
case .ended:
guard let optionsValue = notification.userInfo?[AVAudioSessionInterruptionOptionKey] as? UInt else { return }
let options = AVAudioSession.InterruptionOptions(rawValue: optionsValue)
if options.contains(.shouldResume) {
resume()
} else {
// TODO:
}
#unknown default:
break
}
}
At the beginning of the interruption, I pause the recorder and at the end of it resume the recorder if needed.
However when I resume the recorder after the interruption, it restart the record, deleting the file previously created since I receive a callback from audioRecorderDidFinishRecording(_ recorder: AVAudioRecorder, successfully flag: Bool).
How to get around this problem?
Thanks
I have an AVQueuePlayer that gets songs from a Firebase Storage via their URL and plays them in sequence.
static func playQueue() {
for song in songs {
guard let url = song.url else { return }
lofiSongs.append(AVPlayerItem(url: url))
}
if queuePlayer == nil {
queuePlayer = AVQueuePlayer(items: lofiSongs)
} else {
queuePlayer?.removeAllItems()
lofiSongs.forEach { queuePlayer?.insert($0, after: nil) }
}
queuePlayer?.seek(to: .zero) // In case we added items back in
queuePlayer?.play()
}
And this works great.
I can also make the lock screen controls appear and use the play pause button like this:
private static func setRemoteControlActions() {
let commandCenter = MPRemoteCommandCenter.shared()
// Add handler for Play Command
commandCenter.playCommand.addTarget { [self] event in
queuePlayer?.play()
return .success
}
// Add handler for Pause Command
commandCenter.pauseCommand.addTarget { [self] event in
if queuePlayer?.rate == 1.0 {
queuePlayer?.pause()
return .success
}
return .commandFailed
}
}
The problem comes with setting the metadata of the player (name, image, etc).
I know it can be done once by setting MPMediaItemPropertyTitle and MPMediaItemArtwork, but how would I change it when the next track loads?
I'm not sure if my approach works for AVQueueplayer, but for playing live streams with AVPlayer you can "listen" to metadata receiving.
extension ViewController: AVPlayerItemMetadataOutputPushDelegate {
func metadataOutput(_ output: AVPlayerItemMetadataOutput, didOutputTimedMetadataGroups groups: [AVTimedMetadataGroup], from track: AVPlayerItemTrack?) {
//look for metadata in groups
}
}
I added the AVPlayerItemMetadataOutputPushDelegate via an extension to my ViewController.
I also found this post.
I hope this gives you a lead to a solution. As said I'm not sure how this works with AVQueuePlayer.
I can detect workout started on backgroun with apple watch, with below code
let workoutevent = HKObjectType.workoutType()
if store.authorizationStatus(for: workoutevent) != HKAuthorizationStatus.notDetermined {
store.enableBackgroundDelivery(for: workoutevent, frequency: .immediate, withCompletion: { (worked, error) in
print(worked)
print(error)
print("workoutevent enableBackgroundDelivery")
guard worked else {
self.logger.error("Unable to set up background delivery from HealthKit: \(error!.localizedDescription)")
print("workoutevent unable to set up background ")
fatalError()
}
if error != nil {
print("workoutevent error is ")
print(error)
}
})
backgroundObserver3 =
HKObserverQuery(sampleType: workoutevent,
predicate: nil,
updateHandler: processUpdate3(query:completionHandler3:error:))
if let queryworkout = backgroundObserver3 {
print("Starting workoutevent333 the background observer query.\(queryworkout)")
store.execute(queryworkout)
}
}else{
print("not determined....")
}
whenever I started workout on apple watch, it goes to
processUpdate3
very well,
but what I need to know is to when user finish workout.
how can I detect it ?
func processUpdate3(query: HKObserverQuery,
completionHandler3: #escaping () -> Void,
error: Error?) {
print("come here when work out started ")
...........
}
I don't see it in your code. But somewhere you must have an HKWorkoutSession. My app is set up to track running and I configure the session to begin like so;
let configuration = HKWorkoutConfiguration()
configuration.activityType = .running
do {
// HKWorkoutSession is set up here.
session = try HKWorkoutSession(healthStore: healthStore, configuration: configuration)
workoutBuilder = session.associatedWorkoutBuilder()
} catch {
// handle errors
}
When the users taps the end workout button I call session.end()
Here is a link to the documentation.
I'm trying to connect two players with each other using GameKit in a very simple game. I want to use GKMatchmaker.shared().findMatch as I don't want to show any GameCenter related view controllers. (to keep it simple)
Problem:
Even though GameKit creates a match after finding two players, an error occurs that prevents either player from sending any message to the others.
Current Situation:
The basic code is as follows (based on the docs described here: https://developer.apple.com/documentation/gamekit/finding_multiple_players_for_a_game)
print("Requesting multiplayer match")
let request = GKMatchRequest()
request.minPlayers = 2
request.maxPlayers = 2
request.recipientResponseHandler = {(player: GKPlayer, respnse: GKInviteRecipientResponse) -> Void in
print("new player about to join")
print(player.alias)
print(respnse)
}
GKMatchmaker.shared().findMatch(for: request, withCompletionHandler: {
(match: GKMatch?, error: Error?) -> Void in
if error != nil {
// Handle the error that occurred finding a match.
print("error during matchmaking")
print(error as Any)
} else if match != nil {
guard let match = match else { return }
print("connected to \(match.players.count) players")
// load the multiplayer data handler
let handler = MultiMatchHandler()
match.delegate = handler
// load the multiplayer service
let service = MultiMatchService(match: match)
service.sendMessageToAll(text: "Hello from the other side")
// finish the match making
GKMatchmaker.shared().finishMatchmaking(for: match)
// Start the game with the players in the match.
self.view?.presentScene(GameScene.newScene(multiplayer: service))
}
})
The output of that is
Requesting multiplayer match
2022-01-05 01:19:16.554959+0100 Grapefruit[38300:10026027] [Match] cannot set connecting state for players: (
"<GKPlayer: 0x282add280>(alias:... gamePlayerID:... teamPlayerID:... name:... status:(null) friendBiDirectional:0 friendPlayedWith:1 friendPlayedNearby:0 acceptedGameInviteFromThisFriend:0 initiatedGameInviteToThisFriend:0 automatchedTogether:1)"
), as there is no inviteDelegate set yet. The state might directly change to Ready when we set the inviteDelegate later and call sendQueuedStatesAndPackets.
2022-01-05 01:19:16.557002+0100 Grapefruit[38300:10026027] [Match] syncPlayers failed to loadPlayersForLegacyIdentifiers: (
"..."
)
connected to 0 players
sending text Hello from the other side failed
Findings:
minPlayers is set to 2. As the completion handler is called this means that at least one more player was found. But the number of players returned in match.players.count is 0
The matcher shows an error saying that cannot set connecting state for players ... as there is no inviteDelegate set yet. I can't find any info about this invite delegate.
Actual Question:
What is an inviteDelegate? Do I really need to implement such (if yes, then how?)? (I don't think so as the docs state that the match only starts after the invites are accepted).
How can I resolve this issue?
here is a working example for you. open on two machines, make sure both are authenticated, press "findMatch()" on both machines (and wait for confirmation), then ping baby ping
i believe the "no inviteDelegate set yet" error doesn't mean the match making necessary failed, and can safely be ignored, as mentioned here
you'll want to implement more of the GKMatchDelegate protocol, but this is a skeleton for demonstration purposes
import SwiftUI
import GameKit
import SpriteKit
class MyGameScene: SKScene, GKMatchDelegate {
override func didMove(to view: SKView) {
self.backgroundColor = .yellow
}
//GKMatchDelegate protocol
func match(_ match: GKMatch, didReceive data: Data, forRecipient recipient: GKPlayer, fromRemotePlayer player: GKPlayer) {
print("\(Self.self) \(#function) -- ping received")
}
}
struct Matchmaker: View {
#State var isAuthenticated:Bool = false
#State var scene = MyGameScene()
#State var match:GKMatch? = nil
var body: some View {
ZStack {
Color.clear
SpriteView(scene: scene)
VStack(alignment: .leading, spacing: 20) {
Text("1) authenticate() \(Image(systemName: isAuthenticated ? "checkmark.icloud" : "xmark.icloud"))")
Button { findMatch() } label: {
Text("2) findMatch() \(Image(systemName: (match != nil) ? "person.fill.checkmark" : "person.fill.xmark"))")
}
Button { ping() } label: {
Text("3) ping()")
}
}
}
.onAppear() {
authenticate()
}
}
func authenticate() {
GKLocalPlayer.local.authenticateHandler = { viewController, error in
if let error = error { print(error) }
isAuthenticated = (error == nil)
}
}
func findMatch() {
guard isAuthenticated else { return }
let request = GKMatchRequest()
request.minPlayers = 2
request.maxPlayers = 2
request.playerAttributes = 0xFFFFFFFF //mask for "i'll match with anyone"
GKMatchmaker.shared().findMatch (for: request) { match, error in
if let error = error { print(error) }
self.match = match
self.match?.delegate = scene
}
}
func ping() {
let players = match?.players ?? [];
let data = Data()
do {
try match?.send(data, to: players, dataMode: .reliable)
} catch {
print("Sending failed")
}
}
}