Multiple view controllers with different orientations - ios

Question

Explanation
I have a game that runs in landscape, and I'm trying to send an email, also, in portrait mode.
Basically:
if the actual view is GameViewController = .Landscape;
if the actual view is MailViewController = .AllButUpsideDown.
Demo code
I built this code below, but I'm having an issue with it:
Mail isn't being called when touching the screen.
You can download this code here.
GameScene
import SpriteKit
class GameScene: SKScene {
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
/* Called when a touch begins */
//Mail
NSNotificationCenter.defaultCenter().postNotificationName("openMail", object: nil)
}
}
GameViewController
import UIKit
import SpriteKit
class GameViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Set view size.
let scene = GameScene(size: view.bounds.size)
// Configure the view.
let skView = view as! SKView
skView.showsFPS = true
skView.showsNodeCount = true
/* Sprite Kit applies additional optimizations to improve rendering performance */
skView.ignoresSiblingOrder = true
/* Set the scale mode to scale to fit the window */
scene.scaleMode = .ResizeFill
skView.presentScene(scene)
}
override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
if UIDevice.currentDevice().userInterfaceIdiom == .Phone {
return .Landscape
} else {
return .Landscape
}
}
}
MailViewController
import UIKit
import SpriteKit
import MessageUI
class MailViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
//Register mail observer (so I can call from GameScene)
NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(MailViewController.openMailController), name: "openMail", object: nil)
}
override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
if UIDevice.currentDevice().userInterfaceIdiom == .Phone {
return .AllButUpsideDown
} else {
return .All
}
}
}
//Mail
extension MailViewController: MFMailComposeViewControllerDelegate {
func openMailController() {
let mailComposerVC = MFMailComposeViewController()
mailComposerVC.mailComposeDelegate = self //extremely important to set the mailComposeDelegate property, not the delegate property
self.presentViewController(mailComposerVC, animated: true, completion: nil)
}
func mailComposeController(controller: MFMailComposeViewController, didFinishWithResult result: MFMailComposeResult, error: NSError?) {
self.dismissViewControllerAnimated(true, completion: nil)
}
}
Thanks for any help,
Luiz.

Answer 1

Problem with your provided code is that observer in MailViewController class view did load method is not called. So Observer is not set to receive any notification.
Also you didn't called segue anywhere in your code to call MailViewController.
Solution: By using Delegate Method
GameScene class updated:
import SpriteKit
// Protocol
protocol gameSceneDelegate {
func openMail()
}
// Protocol
class GameScene: SKScene {
// Delegate
var sceneDelegate : gameSceneDelegate?
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
/* Called when a touch begins */
//Mail
// NSNotificationCenter.defaultCenter().postNotificationName("openMail", object: nil)
// delegate method called on receiving touches
self.sceneDelegate?.openMail()
}
}
GameViewController class updated:
import UIKit
import SpriteKit
class GameViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Set view size.
let scene = GameScene(size: view.bounds.size)
// Delegate Confirmation
scene.sceneDelegate = self
// Configure the view.
let skView = view as! SKView
skView.showsFPS = true
skView.showsNodeCount = true
/* Sprite Kit applies additional optimizations to improve rendering performance */
skView.ignoresSiblingOrder = true
/* Set the scale mode to scale to fit the window */
scene.scaleMode = .ResizeFill
skView.presentScene(scene)
}
override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
if UIDevice.currentDevice().userInterfaceIdiom == .Phone {
return .Landscape
} else {
return .Landscape
}
}
}
// Delegate Method Implementation
extension GameViewController : gameSceneDelegate{
func openMail(){
self.performSegueWithIdentifier("openMail", sender: self);
}
}
Mail View Controller:
import UIKit
import SpriteKit
import MessageUI
class MailViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
//Register mail observer (so I can call from GameScene)
// NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(MailViewController.openMailController), name: "openMail", object: nil)
self.openMailController()
}
override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
if UIDevice.currentDevice().userInterfaceIdiom == .Phone {
return .AllButUpsideDown
} else {
return .All
}
}
}
//Mail
extension MailViewController: MFMailComposeViewControllerDelegate {
func openMailController() {
let mailComposerVC = MFMailComposeViewController()
mailComposerVC.mailComposeDelegate = self //extremely important to set the mailComposeDelegate property, not the delegate property
self.presentViewController(mailComposerVC, animated: true, completion: nil)
}
func mailComposeController(controller: MFMailComposeViewController, didFinishWithResult result: MFMailComposeResult, error: NSError?) {
self.dismissViewControllerAnimated(true, completion: nil)
}
}
Last change in storyboard:
click segue connecting GameViewController and MailViewController and change identifier to - openMail or whatever you want to keep