当用户从CallKit那里获取时，我在调用Call的accept按钮上切换了root用户，但是以某种方式，root控制器对象总是发现nil并且应用程序崩溃了
案例：这是在后台运行且手机状态处于锁定状态的应用程序锁定的。
func provider(_ provider: CXProvider, perform action: CXAnswerCallAction) {
endCallTimer()
guard let call = callManager.callWithUUID(uuid: action.callUUID) else {
action.fail()
return
}
let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let incomingCall = mainStoryboard.instantiateViewController(withIdentifier: "CallConnectedVC") as! IncomingController
incomingCall.connectToCalling(duration:self.callDict["duration"] as! Int, consumerId: "\(self.callDict["consumerId"] as! Int)", categoryName: self.callDict["categoryTopic"] as! String, categoryImage: "", callId: self.callDict["callId"] as! String)
let nav = UINavigationController(rootViewController: incomingCall)
UIApplication.shared.keyWindow?.makeKeyAndVisible()
UIApplication.shared.keyWindow?.rootViewController = nav
configureAudioSession()
call.answer()
action.fulfill()
}
IncomingController代码-
import UIKit
import TwilioVideo
import AVFoundation
import SDWebImage
import FirebaseAnalytics
class IncomingController: UIViewController {
var camera: TVICameraCapturer?
@IBOutlet weak var img_user: UIImageView!
@IBOutlet weak var lblName: UILabel!
@IBOutlet weak var lbltopic: UILabel!
@IBOutlet weak var lblTimer: UILabel!
@IBOutlet weak var btn_speaker : UIButton!
@IBOutlet weak var btn_video: UIButton!
@IBOutlet weak var btn_mute: UIButton!
@IBOutlet weak var btn_extendcall: UIButton!
@IBOutlet weak var btn_endcall: UIButton!
//Video
@IBOutlet weak var btn_toogleMic : UIButton!
@IBOutlet weak var btnConnectAudio : UIButton!
@IBOutlet weak var btnFlipCamera : UIButton!
@IBOutlet weak var view_video: UIView!
@IBOutlet weak var lblviedoName: UILabel!
@IBOutlet weak var lblvideoTimer: UILabel!
@IBOutlet weak var lblvideoTopic: UILabel!
@IBOutlet weak var provider_previewView: TVIVideoView!
@IBOutlet weak var provider_remoteView: TVIVideoView!
@IBOutlet weak var provider_previewViewShadow: UIView!
@IBOutlet weak var btnView : UIView!
@IBOutlet weak var constrain_btnView: NSLayoutConstraint!
//UpdatedVideo
@IBOutlet weak var viewDisableVideo: UIView!
@IBOutlet weak var lblDisableViedoName: UILabel!
@IBOutlet weak var lblDisableVideoTimer: UILabel!
@IBOutlet weak var lblDisableTopic: UILabel!
@IBOutlet weak var lblDisableText: UILabel!
@IBOutlet weak var imgUserDisable: UIImageView!
var NotificationDict = NSMutableDictionary()
var Calltimer: Timer? = Timer()
var sec = 60
var min = 6
var audioDevice: TVIDefaultAudioDevice = TVIDefaultAudioDevice(block: {
do {
try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayAndRecord, mode: AVAudioSessionModeVoiceChat, options: .mixWithOthers)
try AVAudioSession.sharedInstance().setPreferredSampleRate(48000)
try AVAudioSession.sharedInstance().setPreferredIOBufferDuration(0.01)
} catch {
print(error)
}
})
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
TwilioVideo.audioDevice = self.audioDevice
self.prepareLocalMedia()
connectToCalling(duration:NotificationDict["duration"] as! Int, consumerId: "\(NotificationDict["consumerId"] as! Int)", categoryName: NotificationDict["categoryTopic"] as! String, categoryImage: "", callId: NotificationDict["callId"] as! String)
}
//MARK:- Speaker Method
func setAudioOutputSpeaker(_ enabled: Bool) {
let session = AVAudioSession.sharedInstance()
try? session.setCategory(AVAudioSessionCategoryPlayAndRecord)
try? session.setMode(AVAudioSessionModeVoiceChat)
if enabled {
try? session.overrideOutputAudioPort(AVAudioSessionPortOverride.speaker)
} else {
try? session.overrideOutputAudioPort(AVAudioSessionPortOverride.none)
}
try? session.setActive(true)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
//MARK:- Custom Method
func connectToCalling(duration:Int, consumerId:String, categoryName:String, categoryImage:String, callId:String)
{
let Url = "\(Constant.tokenUrl)"
let Param = ["duration":duration, "consumerId":consumerId, "categoryName":categoryName, "categoryImage":categoryImage, "callId":callId] as [String:Any]
ApiResponse.onResponseKeyPost(url: Url, parms: Param as NSDictionary, completion: { (dict, errr) in
print("dict responce",dict)
if(errr == ""){
OperationQueue.main.addOperation {
accessToken = dict["providerToken"] as! String
let connectOptions = TVIConnectOptions.init(token: accessToken) { (builder) in
if let videoTrack = ProvideCallObject.localVideoTrack {
builder.videoTracks = [videoTrack]
}
// We will share a local audio track only if ExampleAVAudioEngineDevice is selected.
if let audioTrack = ProvideCallObject.localAudioTrack {
builder.audioTracks = [audioTrack]
}
userDef.set("\(dict["roomId"]!)", forKey: "roomId")
builder.roomName = "\(dict["roomId"]!)"
}
ProvideCallObject.Provideroom = TwilioVideo.connect(with: connectOptions, delegate: self)
}
}
})
}
@objc func updateCountDown() {
if btn_endcall.isUserInteractionEnabled == false
{
btn_endcall.isUserInteractionEnabled = true
}
if sec == 0 {
if min == 0
{
sec = 0
min = 0
goToFeedback()
Calltimer?.invalidate()
}else
{
sec = 59
min = min - 1
if min == 0 {
SystemSoundID.playFileNamed(fileName: "60 Seconds v2", withExtenstion: "m4a")
}
}
}else
{
var timeString = ""
sec = sec - 1
if min < 10
{
timeString = timeString + "0" + String(min)
if min == 2 && sec == 0{
SystemSoundID.playFileNamed(fileName: "2 Mins v2", withExtenstion: "m4a")
}
}
else
{
timeString = timeString + String(min)
}
if sec < 10
{
timeString = timeString + ":0" + String(sec)
}
else
{
timeString = timeString + ":" + String(sec)
}
lblTimer.text = "\(timeString) Free Minutes"
lblvideoTimer.text = "\(timeString) Free Minutes"
lblDisableVideoTimer.text = "\(timeString) remaining"
}
}
func prepareLocalMedia() {
if (ProvideCallObject.localAudioTrack == nil) {
ProvideCallObject.localAudioTrack = TVILocalAudioTrack.init(options: nil, enabled: true, name: "Microphone")
if (ProvideCallObject.localAudioTrack == nil) {
print("Failed to create audio track")
}
}
if (ProvideCallObject.localVideoTrack == nil) {
self.startPreview()
}
changeButtonImage(isVideoEnable: true)
}
//Video
func setupRemoteVideoView() {
self.provider_previewViewShadow.frame = CGRect(x: self.view_video.bounds.width - 132, y: self.view_video.bounds.height - 239, width: 112, height: 149)
self.provider_previewView.frame = self.provider_previewViewShadow.bounds
self.provider_remoteView.bringSubview(toFront: self.provider_previewViewShadow)
self.provider_remoteView.isHidden = false
}
// MARK: Private
func startPreview() {
if PlatformUtils.isSimulator {
return
}
camera = TVICameraCapturer(source: .frontCamera, delegate: self)
ProvideCallObject.localVideoTrack = TVILocalVideoTrack.init(capturer: camera!, enabled: true, constraints: nil, name: "Camera")
if (ProvideCallObject.localVideoTrack == nil) {
print("Failed to create video track")
} else {
ProvideCallObject.localVideoTrack!.addRenderer(self.provider_previewView)
let tap = UITapGestureRecognizer(target: self, action: #selector(IncomingController.flipCamera))
self.provider_previewView.addGestureRecognizer(tap)
}
}
@objc func flipCamera() {
if (self.camera?.source == .frontCamera) {
self.camera?.selectSource(.backCameraWide)
} else {
self.camera?.selectSource(.frontCamera)
}
}
func cleanupRemoteParticipant() {
if ((ProvideCallObject.remoteParticipant) != nil) {
if ((ProvideCallObject.remoteParticipant?.videoTracks.count)! > 0) {
let remoteVideoTrack = ProvideCallObject.remoteParticipant?.remoteVideoTracks[0].remoteTrack
remoteVideoTrack?.removeRenderer(self.provider_remoteView!)
self.provider_remoteView?.isHidden = true
}
}
ProvideCallObject.remoteParticipant = nil
}
}
// MARK:- TVIRoomDelegate
extension IncomingController : TVIRoomDelegate {
func callDetails(room_sid:String,callID:String) {
let params = ["room_sid":room_sid,"callId": callID,"isCallEnd":0] as [String : Any]
ApiResponse.onResponsePost(url: Constant.callDetailsTwilio, parms: params as NSDictionary) { (response, error) in
}
}
func didConnect(to room: TVIRoom) {
ProvideCallObject.localParticipant = ProvideCallObject.Provideroom?.localParticipant
ProvideCallObject.localParticipant?.delegate = self
Calltimer = Timer.scheduledTimer(timeInterval: 1.0, target: self, selector: #selector(updateCountDown), userInfo: nil, repeats: true)
NotificationDict["roomsid"] = room.sid
btn_video.isUserInteractionEnabled = true
-----------------------------------------
if (room.remoteParticipants.count > 0) {
ProvideCallObject.remoteParticipant = room.remoteParticipants[0]
ProvideCallObject.remoteParticipant?.delegate = self
self.callDetails(room_sid: room.sid, callID: NotificationDict["callId"] as! String)
}
if !isHeadPhoneAvailabel(){
self.setAudioOutputSpeaker(true)
}
}
func room(_ room: TVIRoom, didDisconnectWithError error: Error?) {
self.cleanupRemoteParticipant()
}
func room(_ room: TVIRoom, didFailToConnectWithError error: Error) {
}
func room(_ room: TVIRoom, participantDidConnect participant: TVIRemoteParticipant) {
if (ProvideCallObject.remoteParticipant == nil) {
ProvideCallObject.remoteParticipant = participant
ProvideCallObject.remoteParticipant?.delegate = self
}
// print("Participant \(participant.identity) connected with \(participant.remoteAudioTracks.count) audio and \(participant.remoteVideoTracks.count) video tracks")
}
func room(_ room: TVIRoom, participantDidDisconnect participant: TVIRemoteParticipant) {
if (ProvideCallObject.remoteParticipant == participant) {
cleanupRemoteParticipant()
}
goToFeedback()
}
}
// MARK: TVIRemoteParticipantDelegate
extension IncomingController : TVILocalParticipantDelegate {
func localParticipant(_ participant: TVILocalParticipant, publishedVideoTrack: TVILocalVideoTrackPublication) {
ProvideCallObject.localVideoTrack = publishedVideoTrack.videoTrack as? TVILocalVideoTrack
}
}
// MARK: TVIRemoteParticipantDelegate
extension IncomingController : TVIRemoteParticipantDelegate {
func subscribed(to videoTrack: TVIRemoteVideoTrack,
publication: TVIRemoteVideoTrackPublication,
for participant: TVIRemoteParticipant) {
if (ProvideCallObject.remoteParticipant == participant) {
setupRemoteVideoView()
videoTrack.addRenderer(self.provider_remoteView!)
}
}
func remoteParticipant(_ participant: TVIRemoteParticipant,
enabledVideoTrack publication: TVIRemoteVideoTrackPublication) {
// print("Participant \(participant.identity) enabled \(publication.trackName) video track")
self.viewDisableVideo.isHidden = true
changeButtonImage(isVideoEnable: true)
}
func remoteParticipant(_ participant: TVIRemoteParticipant,
disabledVideoTrack publication: TVIRemoteVideoTrackPublication) {
self.viewDisableVideo.isHidden = false
changeButtonImage(isVideoEnable: false)
// print("Participant \(participant.identity) disabled \(publication.trackName) video track")
}
}
extension IncomingController : TVICameraCapturerDelegate {
func cameraCapturer(_ capturer: TVICameraCapturer, didStartWith source: TVICameraCaptureSource) {
// Layout the camera preview with dimensions appropriate for our orientation.
self.provider_previewView.shouldMirror = (source == .frontCamera)
}
}
// MARK: TVIVideoViewDelegate
extension IncomingController : TVIVideoViewDelegate {
func videoView(_ view: TVIVideoView, videoDimensionsDidChange dimensions: CMVideoDimensions) {
self.view.setNeedsLayout()
}
}
因此可以在定义大小写的情况下切换或更改根控制器吗？
谢谢