The App has 2 viewControllers under navigationController, UINavigationController--(root view)-->UIViewController--(present modally)-->UIViewController2.
After entering UIViewController2, press home and let the App enter background, then reactive the App, it's screen goes back to UIViewController. This happens on real device, but not on simulator.
I had suspected that is the lack of memory, but there is few objects in UIViewController2. Any other reason makes the App to do so?
Update:
I found the problem when the iPhone was not connected with XCode!!!
I have just tested the App connecting with Xcode, when I press the home button to enter background, the App crashed!!! It means when I "reactive" the app, it actually restart again, and it do go to UIViewController.
I got the following errors
let localfilePath = NSBundle.mainBundle().URLForResource("home", withExtension: "html");
var webViewRequest:NSURLRequest!
override func viewDidLoad() {
super.viewDidLoad()
webViewRequest = NSURLRequest(URL: localfilePath!);
initSubviews()
}
func initSubviews() {
let fm: CGRect = UIScreen.mainScreen().bounds
self.mainScrollView = UIScrollView(frame:CGRectMake(0, 0, fm.size.width, fm.size.height))
self.mainScrollView!.contentSize = CGSizeMake(self.mainScrollView!.frame.size.width * CGFloat(numPages), self.mainScrollView!.frame.size.height)
self.mainScrollView!.backgroundColor = UIColor.whiteColor()
self.mainScrollView!.pagingEnabled = true
self.mainScrollView!.bounces = false
self.mainScrollView!.showsHorizontalScrollIndicator = false;
self.mainScrollView!.scrollRectToVisible(CGRectMake(mainScrollView!.frame.size.width, 0, mainScrollView!.frame.size.width, mainScrollView!.frame.size.height), animated: false)
self.mainScrollView!.delegate = self
self.view.addSubview(mainScrollView!);
prevWebView = runFunc.setWebView(0)
currWebView = runFunc.setWebView(runFunc.screenWidth)
nextWebView = runFunc.setWebView(runFunc.screenWidth*2)
currWebView.delegate = self
prevWebView.delegate = self
nextWebView.delegate = self
prevWebView.tag = 0
currWebView.tag = 1
nextWebView.tag = 2
prevWebView.backgroundColor = UIColor.whiteColor()
currWebView.backgroundColor = UIColor.whiteColor()
nextWebView.backgroundColor = UIColor.whiteColor()
mainScrollView.addSubview(prevWebView)
mainScrollView.addSubview(currWebView)
mainScrollView.addSubview(nextWebView)
currWebView.scrollView.delegate = self
prevWebView.scrollView.delegate = self
nextWebView.scrollView.delegate = self
prevWebView.scrollView.decelerationRate = UIScrollViewDecelerationRateNormal
currWebView.scrollView.decelerationRate = UIScrollViewDecelerationRateNormal
nextWebView.scrollView.decelerationRate = UIScrollViewDecelerationRateNormal
currWebView.loadRequest(webViewRequest);
NSTimer.scheduledTimerWithTimeInterval(1.0, target: self, selector: "loadPrevNext", userInfo: nil, repeats: false)
}
func loadPrevNext() {
let prev = getPrev(currVolume, theChapter: currChapter)
prevVolume = prev["volume"]!
prevChapter = prev["chapter"]!
prevChapterArr = runFunc.getLection(prev["volume"]!, theChapter: prev["chapter"]!)
let next = getNext(currVolume, theChapter: currChapter)
nextVolume = next["volume"]!
nextChapter = next["chapter"]!
nextChapterArr = runFunc.getLection(next["volume"]!, theChapter: next["chapter"]!)
prevWebView.loadRequest(webViewRequest);
nextWebView.loadRequest(webViewRequest);
}
Related
I have my custom TabBarController as usual, which contains 8 viewController.
class STTabBarController: UITabBarController,UITabBarControllerDelegate {
let tabBarOrderKey = "tabBarOrderKey"
private var messangerNavigationController: UINavigationController!
override func viewDidLoad() {
super.viewDidLoad()
self.delegate = self
configureViewControllers()
setUpTabBarItemTags()
getSavedTabBarItemsOrder()
}
func configureViewControllers() {
let clientsController = STClientsViewController(nibName: "STClientsViewController", bundle: nil)
let clientNavigationController = UINavigationController(rootViewController: clientsController)
clientsController.title = "Clients"
clientNavigationController.tabBarItem.image = UIImage(named: "Client")
let openHouseController = STOpenHouseViewController(nibName: "STOpenHouseViewController", bundle: nil)
let openHouseNavigationController = UINavigationController(rootViewController: openHouseController)
openHouseController.title = "Open House"
openHouseNavigationController.tabBarItem.image = UIImage(named: "OpenHouse")
let performanceController = STChartsViewController(nibName: "STChartsViewController", bundle: nil)
let performanceNavigationController = UINavigationController(rootViewController: performanceController)
performanceController.title = "Performance"
performanceNavigationController.tabBarItem.image = UIImage(named: "Performance")
let calculatorsController = STCalculatorsViewController(nibName: "STCalculatorsViewController", bundle: nil)
let calculatorsNavigationController = UINavigationController(rootViewController: calculatorsController)
calculatorsController.title = "Calculators"
calculatorsNavigationController.tabBarItem.image = UIImage(named: "Calculators")
let storyBoard:UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let communityViewController = storyBoard.instantiateViewController(withIdentifier: "Navigation")
communityViewController.title = "Community"
communityViewController.tabBarItem.image = UIImage (named:"Community")
let industryProfessionalsController = STIndustryProfessionalsViewController(nibName: "STIndustryProfessionalsViewController", bundle: nil)
let industryProfessionalsNavigationController = UINavigationController(rootViewController: industryProfessionalsController)
industryProfessionalsController.title = "Vendors"
industryProfessionalsNavigationController.title = "Vendors"
industryProfessionalsNavigationController.tabBarItem.image = UIImage(named: "Industry-professionals")
let agentResourcesController = STAgentResourcesViewController(nibName: "STAgentResourcesViewController", bundle: nil)
let agentResourcesNavigationController = UINavigationController(rootViewController: agentResourcesController)
agentResourcesController.title = "Resources"
agentResourcesNavigationController.title = "Resources"
agentResourcesNavigationController.tabBarItem.image = UIImage(named: "Agent-Resources")
let settingsController = STSettingsViewController(nibName: "STSettingsViewController", bundle: nil)
let settingsNavigationController = UINavigationController(rootViewController: settingsController)
settingsController.title = "Settings"
settingsNavigationController.tabBarItem.image = UIImage(named: "Settings")
let coachController = STCoachsCornerViewController(nibName: "STCoachsCornerViewController", bundle: nil)
let coachNavigationController = UINavigationController(rootViewController: coachController)
coachController.navigationItem.title = "Action Plan"
coachNavigationController.tabBarItem.title = "Plan"
coachNavigationController.tabBarItem.image = UIImage(named: "Plan")
self.viewControllers = [clientNavigationController ,performanceNavigationController,calculatorsNavigationController, coachNavigationController,industryProfessionalsNavigationController,agentResourcesNavigationController,openHouseNavigationController, settingsNavigationController]
tabBar.isTranslucent = false
let topBorder = CALayer()
topBorder.frame = CGRect(x: 0, y: 0, width: 1000, height: 0.5)
topBorder.backgroundColor = UIColor.returnRGBColor(r: 229, g: 231, b: 235, alpha: 1).cgColor
tabBar.layer.addSublayer(topBorder)
tabBar.clipsToBounds = true
}
func setUpTabBarItemTags() {
var tag = 0
if let viewControllers = viewControllers {
for view in viewControllers {
view.tabBarItem.tag = tag
tag += 1
}
}
}
func getSavedTabBarItemsOrder() {
var newViewControllerOrder = [UIViewController]()
if let initialViewControllers = viewControllers {
if let tabBarOrder = UserDefaults.standard.object(forKey: tabBarOrderKey) as? [Int] {
for tag in tabBarOrder {
newViewControllerOrder.append(initialViewControllers[tag])
}
setViewControllers(newViewControllerOrder, animated: false)
}
}
}
func tabBarController(_ tabBarController: UITabBarController, didEndCustomizing viewControllers: [UIViewController], changed: Bool) {
var orderedTagItems = [Int]()
if changed {
for viewController in viewControllers {
let tag = viewController.tabBarItem.tag
orderedTagItems.append(tag)
}
UserDefaults.standard.set(orderedTagItems, forKey: tabBarOrderKey)
}
}
And I met the problem when I start my on different devices and from time to time it can hide Settings(last) item in "More" tab.This look kinda ridiculous because code is straightforward and simple as you see and I dont know what can be wrong here.
Does smb know what can it be? Thanks
The problem was in saving order of this tabs to User Defaults.
I had 7 controllers, but when was trying to save it, saved was only 6.
Here is final code of saving function:
func getSavedTabBarItemsOrder() {
var newViewControllerOrder = [UIViewController]()
if let initialViewControllers = viewControllers {
if let tabBarOrder = UserDefaults.standard.object(forKey: tabBarOrderKey) as? [Int] {
for tag in tabBarOrder {
newViewControllerOrder.append(initialViewControllers[tag])
}
let difference = Set(initialViewControllers).subtracting(newViewControllerOrder)
newViewControllerOrder.append(contentsOf: difference)
setViewControllers(newViewControllerOrder, animated: false)
}
}
}
I've configured WebRTC in IOS native app, but faced with a problem:
When I'm talking I hear myself. I tried to turn off all RTCEAGLVideoView and I still hear myself. And only when I comment the next peace of code I stoped hearing myself:
let audioTrack = pcFactory?.audioTrack(withTrackId: "localAudioTrack")
localStream?.addAudioTrack(audioTrack!)
Also, I've tried to use audioTrack?.isEnabled = false, and it work, but the opposite site of conversation does not hear me to when I do that.
So, is there any way to mute audio track locally, but to let it be unmuted for the remote RTCMediaStream? Thanks. My PeerConnection setup is listed bellow:
init(peerId:String, sender:RtcDataSender, isPublisher:Bool, isVideo:Bool = true, isAudio:Bool = true) {
super.init()
self.audio = isAudio
self.video = isVideo
self.rtcDataSender = sender
self.peerId = peerId
let decoderFactory = ARDVideoDecoderFactory.init()
let encoderFactory = ARDVideoEncoderFactory.init()
rtcDictionaryFactory = RtcDictionaryFactory()
// pcFactory = RTCPeerConnectionFactory.init(encoderFactory: encoderFactory, decoderFactory: decoderFactory)
pcFactory = RTCPeerConnectionFactory.init()
let config = RTCConfiguration.init()
config.iceServers = servers
let constraints:[String:String] = ["OfferToReceiveAudio":"\(isAudio)", "OfferToReceiveVideo":"\(isVideo)"]
let constraintsConnection:[String:String] = ["kRTCMediaConstraintsMinWidth" : "640",
"kRTCMediaConstraintsMinHeight" : "480",
"kRTCMediaConstraintsMinFrameRate" : "15",
"kRTCMediaConstraintsMaxWidth" : "1280",
"kRTCMediaConstraintsMaxHeight" : "720",
"kRTCMediaConstraintsMaxFrameRate" : "30"]
let mediaConnectionConstraints = RTCMediaConstraints.init(mandatoryConstraints: constraintsConnection, optionalConstraints: nil)
rtcMediaConstaints = RTCMediaConstraints.init(mandatoryConstraints: constraints, optionalConstraints: nil)
peerConnection = pcFactory?.peerConnection(with: config, constraints: rtcMediaConstaints!, delegate: self)
if (isPublisher) {
localStream = pcFactory?.mediaStream(withStreamId: "localStream")
if isVideo {
let track = self.createLocalVideoTrack()
localStream?.addVideoTrack(track!)
}
if isAudio {
let audioTrack = pcFactory?.audioTrack(withTrackId: "localAudioTrack")
localStream?.addAudioTrack(audioTrack!)
audioTrack?.isEnabled = false
// audioTrack?.isEnabled = false
// audioTrack?.source.volume = 0
}
rtcDataSender?.localStreamAdded(peerId: peerId, stream: localStream!, isVideo: isVideo)
peerConnection?.add(localStream!)
if isVideo {
didCreateCapturer(capturer: capturer!)
}
}
}
Here is what I want to do: use results from ConsentDocument for view it in ViewController using identifier of step. But signature is always nil. So, how can I get fisrt and last name from Consent Document?
override func viewDidLoad() {
super.viewDidLoad()
let signatureResult = ORKConsentSignatureResult(identifier: "ConsentReviewStep")
let signature = signatureResult.signature
let label = UILabel(frame: CGRectMake(0, 0, 200, 21))
label.center = CGPointMake(160, 284)
label.textAlignment = NSTextAlignment.Center
label.text = signature?.givenName
self.view.addSubview(label)}
Here I'm creating step, where user gave me givenName(first name) and familyName(last name). This step named reviewConsentStep.
#IBAction func joinButtonTapped(sender: UIButton) {
let consentDocument = ConsentDocument()
let consentStep = ORKVisualConsentStep(identifier: "VisualConsentStep", document: consentDocument)
let healthDataStep = HealthDataStep(identifier: "Health")
let signature = consentDocument.signatures!.first!
let reviewConsentStep = ORKConsentReviewStep(identifier: "ConsentReviewStep", signature: signature, inDocument: consentDocument)
reviewConsentStep.text = "Review the consent form."
reviewConsentStep.reasonForConsent = "Consent to join the Developer Health Research Study."
let passcodeStep = ORKPasscodeStep(identifier: "Passcode")
passcodeStep.text = "Now you will create a passcode to identify yourself to the app and protect access to information you've entered."
let completionStep = ORKCompletionStep(identifier: "CompletionStep")
completionStep.title = "Welcome aboard."
completionStep.text = "Thank you for joining this study."
let orderedTask = ORKOrderedTask(identifier: "Join", steps: [consentStep, reviewConsentStep, healthDataStep, passcodeStep, completionStep])
let taskViewController = ORKTaskViewController(task: orderedTask, taskRunUUID: nil)
taskViewController.delegate = self
presentViewController(taskViewController, animated: true, completion: nil)
}
}
Initially I had this code working when I was just animating the one UIImageView that I had. But then I changed it to animate several dynamically created UIImageViews, however since they are dynamically created inside a for loop, I'm finding it difficult to animate them as I did the initial one.
override func viewDidLoad() {
super.viewDidLoad()
var sprite: UIImage = UIImage(named: "sprites/areaLocatorSprite.png")!
var locations:NSArray = animal[eventData]["locations"] as NSArray
for var i = 0; i < locations.count; i++ {
println(locations[i]["locationx"])
var locationx = locations[i]["locationx"] as String
var locationy = locations[i]["locationy"] as String
let x = NSNumberFormatter().numberFromString(locationx)
let y = NSNumberFormatter().numberFromString(locationy)
let cgfloatx = CGFloat(x!)
let cgfloaty = CGFloat(y!)
var mapSprite: UIImageView
mapSprite = UIImageView(image: sprite)
mapSprite.frame = CGRectMake(cgfloatx,cgfloaty,10,10)
townMap.addSubview(mapSprite)
timer = NSTimer.scheduledTimerWithTimeInterval(0.35, target: self, selector: Selector("flash"), userInfo: nil, repeats: true)
}
}
func flash() {
var mapSprite:UIImageView?
if mapSprite?.alpha == 1 {
mapSprite?.alpha = 0
} else {
mapSprite?.alpha = 1
}
}
This does not work as the mapSprite in the flash function is different to the one in the for loop. How can I refer to the one in the for loop and then animate it? Or would there be a better alternative to what I'm currently doing?
Many thanks!
EDIT
Using Xcode 6.2
You need to store the views into a property and then enumerate that property each time your timer event is fired
var sprites: [UIImageView]?
override func viewDidLoad() {
super.viewDidLoad()
var sprite = UIImage(named: "sprites/areaLocatorSprite.png")!
var locations:NSArray = animal[eventData]["locations"] as NSArray
self.sprites = map(locations) {
var locationx = $0["locationx"] as String
var locationy = $0["locationy"] as String
let x = NSNumberFormatter().numberFromString(locationx)
let y = NSNumberFormatter().numberFromString(locationy)
let cgfloatx = CGFloat(x!)
let cgfloaty = CGFloat(y!)
var mapSprite = UIImageView(image: sprite)
mapSprite.frame = CGRectMake(cgfloatx,cgfloaty,10,10)
townMap.addSubview(mapSprite)
return mapSprite
}
timer = NSTimer.scheduledTimerWithTimeInterval(0.35, target: self, selector: Selector("flash"), userInfo: nil, repeats: true)
}
func flash() {
if let sprites = self.sprites {
for sprite in sprites {
sprite.alpha = sprite.alpha == 0 ? 1 : 0
}
}
}
When I rotate the app twice after selecting a few items, it crashes. I have overridden the sendEvent method and that's where the debugger stops. When I try to print the event type, it shows me something weird (I think it's a memory location that doesn't exist):
(lldb) print event.type
(UIEventType) $R10 = <invalid> (0xff)
Somehow I think this is related to how I handle the rotation. I have a master-detail style application, that uses a different type of navigation for pad-landscape, pad-portrait and phone. I have created a class named NavigationFlowController which handles all navigational events and sets up the views accordingly. On rotation, it breaks up the view trees and recomposes them with the correct navigation
func changeViewHierarchyForDevideAndOrientation(newOrientation:UIInterfaceOrientation? = nil){
print("MA - Calling master layout method")
UIApplication.myDelegate().window?.frame = UIScreen.mainScreen().bounds
let idiom = UIDevice.currentDevice().userInterfaceIdiom
var orientation:UIInterfaceOrientation!
if let no = newOrientation{
orientation = no
}else{
orientation = UIApplication.sharedApplication().statusBarOrientation
}
print("MA - Breaking up view tree...")
breakupFormerViewTree([sidebarViewController, listViewController, detailViewController, loginViewController])
print("MA - Start init navbackbone")
initNavBackboneControllers()
guard let _ = UIApplication.myDelegate().currentUser else {
if idiom == UIUserInterfaceIdiom.Phone{
currentState = AppState.PHONE
}else if idiom == UIUserInterfaceIdiom.Pad && UIInterfaceOrientationIsLandscape(orientation){
currentState = AppState.PAD_LANDSCAPE
}else if idiom == UIUserInterfaceIdiom.Pad && UIInterfaceOrientationIsPortrait(orientation){
currentState = AppState.PAD_PORTRAIT
}
print("MA - Current user is nil - resetting")
mainViewController.addChildViewController(loginViewController)
return
}
if idiom == UIUserInterfaceIdiom.Phone{
currentState = AppState.PHONE
leftNavigationController?.viewControllers = [listViewController]
slideViewController?.rearViewController = sidebarViewController
slideViewController?.frontViewController = leftNavigationController
slideViewController?.rearViewRevealWidth = 267;
mainViewController.addChildViewController(slideViewController!)
}else if idiom == UIUserInterfaceIdiom.Pad && UIInterfaceOrientationIsLandscape(orientation){
currentState = AppState.PAD_LANDSCAPE
leftNavigationController!.viewControllers = [sidebarViewController, listViewController]
rightNavigationController!.viewControllers = [detailViewController]
detailViewController.navigationItem.leftBarButtonItems = []
detailViewController.initLayout()
print("MA - Init split view controller with VCs")
splitViewController!.viewControllers = [leftNavigationController!, rightNavigationController!]
mainViewController.addChildViewController(splitViewController!)
}else if idiom == UIUserInterfaceIdiom.Pad && UIInterfaceOrientationIsPortrait(orientation){
currentState = AppState.PAD_PORTRAIT
leftNavigationController!.pushViewController(sidebarViewController, animated: false)
leftNavigationController!.pushViewController(listViewController, animated: false)
rightNavigationController!.pushViewController(detailViewController, animated: false)
rightNavigationController?.setNavigationBarHidden(false, animated: false)
slideViewController!.rearViewController = leftNavigationController
slideViewController!.frontViewController = rightNavigationController
detailViewController.navigationItem.leftBarButtonItem = UIBarButtonItem(title: "< Documenten", style: UIBarButtonItemStyle.Bordered, target: slideViewController, action: "revealToggle:")
detailViewController.initLayout()
slideViewController!.rearViewRevealWidth = 350;
mainViewController.addChildViewController(slideViewController!)
}
}
func breakupFormerViewTree(vcs:[UIViewController?]){
for vc in vcs{
if let vcUnwrapped = vc, _ = vcUnwrapped.parentViewController {
vcUnwrapped.removeFromParentViewController()
vcUnwrapped.view.removeFromSuperview()
}
}
}
func initNavBackboneControllers(){
leftNavigationController = UINavigationController()
leftNavigationController?.navigationBar.barTintColor = UIColor(red: 0.25, green: 0.25, blue: 0.25, alpha: 1.0)
leftNavigationController?.navigationBar.tintColor = UIColor.whiteColor()
leftNavigationController?.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName: UIColor.whiteColor()]
leftNavigationController?.navigationBar.translucent = false
rightNavigationController = UINavigationController()
rightNavigationController?.navigationBar.barTintColor = UIColor(red: 0.25, green: 0.25, blue: 0.25, alpha: 1.0)
rightNavigationController?.navigationBar.tintColor = UIColor.whiteColor()
rightNavigationController?.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName: UIColor.whiteColor()]
rightNavigationController?.navigationBar.translucent = false
slideViewController = SWRevealViewController()
slideViewController?.rearViewRevealOverdraw = 0;
slideViewController?.bounceBackOnOverdraw = false;
slideViewController?.stableDragOnOverdraw = true;
slideViewController?.delegate = self
if UIDevice.currentDevice().userInterfaceIdiom == UIUserInterfaceIdiom.Pad{
splitViewController = UISplitViewController()
}
}
EDIT (in response to Justin's questions):
1) I've experienced the crash on all iOS8 iPad simulators.
2) From a fresh start, if I select like 6-7 items and then I rotate twice, it crashes. But I can also select an item, rotate a few times, select some more and keep rotating and at some point it will crash.
3) When an item is selected, the following code is executed:
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let document = getInfoForSection(indexPath.section).documents[indexPath.item]
if document.canOpen{
openDocument(document)
DataManager.sharedInstance.getDocument(document.uri, after: {
(document:Document?) -> () in
if let documentUnwrapped = document{
let detailVC = NavigationFlowController.sharedInstance.detailViewController;
if detailVC.document?.uri == documentUnwrapped.uri{
NavigationFlowController.sharedInstance.detailViewController.documentUpdated(documentUnwrapped)
}
}
})
}
}
And then in the detail view controller:
func initLayout(){
if viewForCard == nil{
// views not yet initialized, happens when initLayout if called from the document setter before this view has been loaded
// just return, the layouting will be done on viewDidLoad with the correct document instead
return
}
self.navigationItem.rightBarButtonItems = []
if document == nil{
// Removed code that handles no document selected
...
return
}
heightForCard.constant = NavigationFlowController.sharedInstance.currentState == AppState.PHONE ? CARD_HEIGHT_PHONE : CARD_HEIGHT_TABLET
viewForCard.hidden = false
removeAllSubviews(viewForCard)
removeAllSubviews(viewForDetails)
viewForDetails.translatesAutoresizingMaskIntoConstraints = false
self.metaVC?.document = document
//self.documentVC?.document = document
self.navigationItem.rightBarButtonItems = []
downloadDocumentIfNeeded()
if NavigationFlowController.sharedInstance.currentState == AppState.PAD_LANDSCAPE || NavigationFlowController.sharedInstance.currentState == AppState.PAD_PORTRAIT{
self.viewForDetails.backgroundColor = document?.senderStyling?.color
addChildViewController(self.metaVC!)
addChildViewController(self.documentVC!)
let metaView = self.metaVC!.view
let documentView:UIView = self.documentVC!.view
viewForDetails.addSubview(metaView)
viewForDetails.addSubview(documentView)
// whole lot of layouting code removed
...
let doubleTap = UITapGestureRecognizer(target: self, action: "toggleZoom")
documentVC!.view.addGestureRecognizer(doubleTap)
}else{
// Phone version code removed
...
}
}
EDIT2:
func downloadDocumentIfNeeded(){
var tmpPath:NSURL?
if let url = document?.contentUrl{
let directoryURL = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0]
if let docName = self.document?.name,
safeName = disallowedCharacters?.stringByReplacingMatchesInString(docName, options: [], range: NSMakeRange(0, docName.characters.count), withTemplate: "-"){
tmpPath = directoryURL.URLByAppendingPathComponent("\(safeName)_\(DetailViewController.dateFormatter.stringFromDate(self.document!.creationDate!)).pdf")
}
if let urlString = tmpPath?.path{
if NSFileManager.defaultManager().fileExistsAtPath(urlString) {
// File is there, load it
loadDocumentInWebview(tmpPath!)
}else{
// Download file
let destination: (NSURL, NSHTTPURLResponse) -> (NSURL) = {
(temporaryURL, response) in
if let path = tmpPath{
return path
}
return temporaryURL
}
download(.GET, URLString: url, destination: destination).response {
(request, response, data, error) in
if error != nil && error?.code != 516{
ToastView.showToastInParentView(self.view, withText: "An error has occurred while loading the document", withDuaration: 10)
}else if let pathUnwrapped = tmpPath {
self.loadDocumentInWebview(pathUnwrapped)
}
}
}
}
}
}
func loadDocumentInWebview(path:NSURL){
if self.navigationItem.rightBarButtonItems == nil{
self.navigationItem.rightBarButtonItems = []
}
self.documentVC?.finalPath = path
let shareItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.Action, target: self, action: "share")
shareItem.tag = SHARE_ITEM_TAG
addNavItem(shareItem)
}
func addNavItem(navItem:UIBarButtonItem){
var addIt = true
for item in self.navigationItem.rightBarButtonItems!{
if item.tag == navItem.tag{
addIt = false
}
}
if addIt{
self.navigationItem.rightBarButtonItems?.append(navItem)
self.navigationItem.rightBarButtonItems!.sortInPlace({ $0.tag > $1.tag })
}
}
EDIT3: I've overridden the sendEvent method to track whether or not a user is touching the app or not, but even if I take out this code, it still crashes, and the debugger then breaks on UIApplicationMain.
override func sendEvent(event: UIEvent)
{
super.sendEvent(event)
if event.type == UIEventType.Touches{
if let touches = event.allTouches(){
for item in touches{
if let touch = item as? UITouch{
if touch.phase == UITouchPhase.Began{
touchCounter++
}else if touch.phase == UITouchPhase.Ended || touch.phase == UITouchPhase.Cancelled{
touchCounter--
}
if touchCounter == 0{
receiver?.notTouching()
}
}
}
}
}
}
Tough one, a bit more insight in the events upto this bug might be helpful.
Does it happen on every device (if not, which devices gives you troubles)
It happens after "vigorously selecting" items. Did your device change orientation before that. Does it also happen before you once rotate?
What do you do in code when you "select an item".
Other then that, I'd start to get the flow of removing your child ViewControllers in breakupFormerViewTree() right. Based on the Apple Docs you want to tell the child it's being removed, before removing the view and then finally removing the child from the Parent ViewController
https://developer.apple.com/library/ios/featuredarticles/ViewControllerPGforiPhoneOS/CreatingCustomContainerViewControllers/CreatingCustomContainerViewControllers.html
Here it actually says you want to call willMoveToParentViewController(nil) before doing the removing. It doesn't say what happens if you don't, but I can imagine the OS doing some lifecycle management there, preventing it from sending corrupt events at a later point.
https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIViewController_Class/index.html#//apple_ref/occ/instm/UIViewController/willMoveToParentViewController:
EDIT (After extra was code posted)
I don't see anything else in your code that might cause it to crash. It does look like a memory-error as you stated, but no idea where it's coming from. Try turning on Zombie objects and Guard Malloc (Scheme > Run > Diagnostics) and maybe you can get a bit more info on what's causing it.
Other then that, I'd just comment out loads of your implementation, swap Subclasses with empty ViewControllers until it doesn't happen again. You should be able to pinpoint what part of your implementation is involved in creating this event. Once you do that, well, pinpoint more and evaluate every single line of code in that implementation.