Since iOS 9 errors are appearing in the console when opening the Game Center View Controller. I have created a bare bones sample project to help diagnose and isolate the issue. My bare bones View Controller contains a UIButton to open the Game Center, and my code is the following:
import UIKit
import GameKit
class ViewController: UIViewController, GKGameCenterControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
let localPlayer = GKLocalPlayer()
localPlayer.authenticateHandler = {(viewController, error) -> Void in
if let viewController = viewController {
self.presentViewController(viewController, animated: true, completion: nil)
}else{
print("(GameCenter) Player authenticated: \(GKLocalPlayer.localPlayer().authenticated)")
}
}
}
#IBAction func openGameCenter(sender: AnyObject) {
let gameCenter = GKGameCenterViewController()
gameCenter.gameCenterDelegate = self
self.presentViewController(gameCenter, animated: true, completion: nil)
}
func gameCenterViewControllerDidFinish(gameCenterViewController: GKGameCenterViewController) {
gameCenterViewController.dismissViewControllerAnimated(true, completion: nil)
}
}
When presenting the Game Center View Controller, I see the following errors in the console:
2015-09-21 11:03:41.530 GameCenterTest[1552:415921] - changing property masksToBounds in transform-only
layer, will have no effect 2015-09-21 11:03:41.531
GameCenterTest[1552:415921] - changing
property masksToBounds in transform-only layer, will have no effect
2015-09-21 11:03:41.532 GameCenterTest[1552:415921] - changing property masksToBounds in transform-only
layer, will have no effect
When tapping on Done and closing the Game Center View Cotroller, I see the following error in the console:
2015-09-21 11:03:52.263 GameCenterTest[1552:416142] plugin
com.apple.GameCenterUI.GameCenterDashboardExtension invalidated
Related
I am trying to save a imageview as a image to binary data in core data. My code is not working. It has a compile error. In View controller it is not regisitering cdHandler. All i want to do is save the the imaveview as binary data in a core data model.I have 2 classes a app delegate and a view controller.
CLASS VIEW CONTROLLER
import UIKit
import CoreData
class ViewController: UIViewController {
var canVasView = UIImageView()
#objc func hhh() {
let photo = self.canVasView.image
let data = photo!.pngData()
if cdHandler.saveObject(pic: data!){
}
}
}
APP DELEGATE
import UIKit
import CoreData
#UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
lazy var persistentContainer: NSPersistentContainer = {
/*
The persistent container for the application. This implementation
creates and returns a container, having loaded the store for the
application to it. This property is optional since there are legitimate
error conditions that could cause the creation of the store to fail.
*/
let container = NSPersistentContainer(name: "Model")
container.loadPersistentStores(completionHandler: { (storeDescription, error) in
if let error = error as NSError? {
// Replace this implementation with code to handle the error appropriately.
// fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
/*
Typical reasons for an error here include:
* The parent directory does not exist, cannot be created, or disallows writing.
* The persistent store is not accessible, due to permissions or data protection when the device is locked.
* The device is out of space.
* The store could not be migrated to the current model version.
Check the error message to determine what the actual problem was.
*/
fatalError("Unresolved error \(error), \(error.userInfo)")
}
})
return container
}()
class cdHandler: NSObject {
private class func getContext() -> NSManagedObjectContext {
let appdeleagetzz = UIApplication.shared.delegate as! AppDelegate
return appdeleagetzz.persistentContainer.viewContext
}
class func saveObject(pic: Data, userName: String) -> Bool {
let context = getContext()
let entity = NSEntityDescription.entity(forEntityName: "User", in: context)
let managedObject = NSManagedObject(entity: entity!, insertInto: context)
managedObject.setValue(pic, forKey:"pic")
managedObject.setValue(userName, forKey:"userName")
do {
try context.save()
return true
} catch {
return false
}
}
class func deletObject(user: User) -> Bool {
let context = getContext()
context.delete(user)
do {
try context.save()
return true
} catch {
return false
}
}
class func fetchObject() -> [User]? {
do {
let context = getContext()
return try context.fetch(User.fetchRequest())
} catch {
return [User]()
}
}
}
}
The error message, *Value of type 'AppDelegate' has no member named 'persistentContainer', explains the problem. Indeed, when I look at the code for your AppDelegate class, I can confirm that it has no member named 'persistentContainer'. (If I am reading it correctly, the last two lines in the file are closing curly brackets. The first one closes your cdHandler nested class, and the second one closes your AppDelegate class.)
Do the following exercise. In Xcode, click in the menu: File > New Project and select iOS, Application and Single View App. Name your new project Junk. Switch on the Core Data checkbox. Click button Create. After it is done, look at the AppDelegate.swift which Xcode created, and in the AppDelegate class, you see it contains 8 functions (func). The 7th one is lazy var persistentContainer. Aha! The compiler is telling you that you probably should not have deleted those 8 functions, persistentContainer in particular.
You should copy that persistentContainer func from that Junk project into your AppDelegate class in your real project. Or, to head off future trouble, consider copying most of the other 7 funcs also. As you can see, most of them don't do anything except provide comments with explanations that are useful for beginners. After you are done copying, close the Junk project. (I overwrite my Junk project with a new Junk project several times in a typical week, especially when answering StackOverflow questions.)
That should fix this particular error and answer this question. Onward to the next issue. :)
Response to comment that you still get the error with cdHandler
Having nothing else to go on, I presume that the error that you are referring to is the compiler error still in your screenshot. In other words, you are saying that adding the persistentContainer definition did not make it any better.
Well, it works for me. Please replace all of the code in your AppDelegate.swift class with the following, build and run it…
import UIKit
import CoreData
#UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
AppDelegate.cdHandler.testGetContext()
return true
}
lazy var persistentContainer: NSPersistentContainer = {
/*
The persistent container for the application. This implementation
creates and returns a container, having loaded the store for the
application to it. This property is optional since there are legitimate
error conditions that could cause the creation of the store to fail.
*/
let container = NSPersistentContainer(name: "Junk")
container.loadPersistentStores(completionHandler: { (storeDescription, error) in
if let error = error as NSError? {
// Replace this implementation with code to handle the error appropriately.
// fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
/*
Typical reasons for an error here include:
* The parent directory does not exist, cannot be created, or disallows writing.
* The persistent store is not accessible, due to permissions or data protection when the device is locked.
* The device is out of space.
* The store could not be migrated to the current model version.
Check the error message to determine what the actual problem was.
*/
fatalError("Unresolved error \(error), \(error.userInfo)")
}
})
return container
}()
class cdHandler: NSObject {
private class func getContext() -> NSManagedObjectContext {
let appdeleagetzz = UIApplication.shared.delegate as! AppDelegate
return appdeleagetzz.persistentContainer.viewContext
}
class func testGetContext() {
let context = getContext()
print("getContext() succeeded, got \(context)")
}
class func saveObject(pic: Data, userName: String) -> Bool {
let context = getContext()
let entity = NSEntityDescription.entity(forEntityName: "User", in: context)
let managedObject = NSManagedObject(entity: entity!, insertInto: context)
managedObject.setValue(pic, forKey:"pic")
managedObject.setValue(userName, forKey:"userName")
do {
try context.save()
return true
} catch {
return false
}
}
class func deletObject(user: NSManagedObject) -> Bool {
let context = getContext()
context.delete(user)
do {
try context.save()
return true
} catch {
return false
}
}
}
}
You see that compiles with no errors. Also, it runs and the AppDelegate.cdhandler.getContext() method works. As you can see, in AppDelegate.application(application:didFinishLaunchingWithOptions:), I have added a call to a new method which I defined later,AppDelegate.cdHandler.testGetContext()`. It works perfectly.
Are you getting a different error now? If so, you need to specify whether it is a Build or Run error. In either case, copy and paste the text of the error into your question, and tell us where it occurs.
I have built a simple iOS app that displays a full-screen WKWebView. It works fine as long as there is no input that triggers the onscreen keyboard but as soon as the keyboard appears it generates an error "Unable to simultaneously satisfy constraints" and a whole trace of NSAutoresizingMaskLayoutConstraints.
Despite the error, the keyboard appears and I can use the text input.
My app is very simple, it just has this app delegate:
import UIKit
#UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
self.window = UIWindow(frame:UIScreen.main.bounds)
window?.makeKeyAndVisible()
window?.rootViewController = WebViewController()
return true
}
}
and this view controller:
import UIKit
import WebKit
class WebViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
let webView = WKWebView()
self.view.addSubview(webView)
webView.translatesAutoresizingMaskIntoConstraints = false
webView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor).isActive = true
webView.leftAnchor.constraint(equalTo:view.safeAreaLayoutGuide.leftAnchor).isActive = true
webView.rightAnchor.constraint(equalTo:view.safeAreaLayoutGuide.rightAnchor).isActive = true
webView.bottomAnchor.constraint(equalTo:view.safeAreaLayoutGuide.bottomAnchor).isActive = true
let request = URLRequest(url: URL(string: "https://www.google.com/")!)
webView.load(request)
}
}
Is there something wrong with the way I use the anchors on the webview? Or do I need extra constraints to handle the onscreen keyboard?
I use the navigationController, and i hide the navigationBar, how to set statusBar color on iPhoneX?
I do not want to set self.view.backgroundColor
iPhoneX notch color
UIView *statusBar = (UIView *)[[UIApplication sharedApplication] valueForKey:#"statusBar"];
statusBar.backgroundColor = [UIColor greenColor];
Here is a hacky trick to change/set background color for status bar during application launch or during viewDidLoad of your view controller.
extension UIApplication {
var statusBarView: UIView? {
return value(forKey: "statusBar") as? UIView
}
}
// Set upon application launch, if you've application based status bar
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
UIApplication.shared.statusBarView?.backgroundColor = UIColor.red
return true
}
}
or
// Set it from your view controller if you've view controller based statusbar
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
UIApplication.shared.statusBarView?.backgroundColor = UIColor.red
}
}
Here is result:
Swift 4
func setStatusBarBackgroundColor(_ color: UIColor) {
guard let statusBar = UIApplication.shared.value(forKeyPath: "statusBarWindow.statusBar") as? UIView else { return }
statusBar.backgroundColor = color
}
In Interface Builder, I simply added a view at 0x0, 44px high and the same width as the top-level view, then set this view to the desired background color. This changed the background color of the status bar without affecting the view background color.
In my case, I needed something like this because the top half of my screen is one color and the bottom half is the other. I didn't see another way to make the status bar match the top color and the home button area match the bottom color.
This could easily be done programmatically if the extra view gets in the way on devices other than the iPhone X. In my case it doesn't cause problems on other devices.
I was writing a simple WebView in Swift, but everytime I try to launch it in the iOS Simulator I get these errors. What is going wrong?
import UIKit
class ViewController: UIViewController {
#IBOutlet var webview: UIWebView
var urlpath = "http://www.google.de"
func loadAddressURL(){
let requesturl = NSURL(string: urlpath)
let request = NSURLRequest(URL: requesturl)
webview.loadRequest(request)
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
loadAddressURL()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
Error:
fatal error: unexpectedly found nil while unwrapping an Optional value
(lldb)
self uiwebview.ViewController 0x7987fc70 0x7987fc70
request NSURLRequest * 0x78ebfc40 0x78ebfc40
requesturl NSURL * "" 0x78ec0040
You simply haven't connected your UIWebView to the webview class property
Open the assistant editor, show your xib or storyboard at left, your view controller source file at right, click on the circle at the left of the webview property and drag into the UIWebView control. Once the connection is established, run the app and it should work now
I guess you get a white page because you test on the simulator. If you test on a real device you should be fine.
You need to put "!" after 'UIWebView' and unwrap "requesturl" to get your String value otherwise it's been an optional and you get error.
import UIKit
class WebViewController: UIViewController {
#IBOutlet var webview: UIWebView!
var urlpath: String = "http://www.google.de"
func loadAddressURL(){
let requesturl = NSURL(string: urlpath)
let request = NSURLRequest(URL: requesturl!)
webview.loadRequest(request)
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
loadAddressURL()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
I'm trying to implement Game Center into my game but i have problems with it.
Here is my Main.cs code :
namespace iosgame
{
public class Application
{
[Register ("AppDelegate")]
public partial class AppDelegate : IOSApplication {
MainViewController mainViewController;
public AppDelegate(): base(new Game(new StaticsDatabase(),new StoreDatabase(),new InappPurchase(),new Social(),new MissionsDatabase()), getConfig()) {
}
internal static IOSApplicationConfiguration getConfig() {
IOSApplicationConfiguration config = new IOSApplicationConfiguration();
config.orientationLandscape = true;
config.orientationPortrait = false;
config.useAccelerometer = false;
config.useMonotouchOpenTK = true;
config.useObjectAL = true;
return config;
}
//
// This method is invoked when the application has loaded and is ready to run. In this
// method you should instantiate the window, load the UI into it and then make the window
// visible.
//
// You have 17 seconds to return from this method, or iOS will terminate your application.
//
public override bool FinishedLaunching (UIApplication app, NSDictionary options)
{
base.FinishedLaunching(app,options);
UIViewController controller = ((IOSApplication)Gdx.app).getUIViewController();
mainViewController = new MainViewController();
controller.View.Add(mainViewController.View);
return true;
}
private bool isGameCenterAPIAvailable()
{
return UIDevice.CurrentDevice.CheckSystemVersion (4, 1);
}
}
static void Main (string[] args)
{
UIApplication.Main (args, null, "AppDelegate");
}
}
}
And here is the superclass of that Main.cs : https://github.com/libgdx/libgdx/blob/master/backends/gdx-backend-iosmonotouch/src/com/badlogic/gdx/backends/ios/IOSApplication.java
I'm trying to use this https://github.com/xamarin/monotouch-samples/blob/master/GameCenterSample/GameCenterSample/MainViewController.cs example but i can't see any authenticate window in my game.I can see "Welcome back ,name" notification but after i log out from gamecenter app and reopen my game but i can't see any authentication window.
How can i fix it?
Thanks in advance
Just call this in FinishedLaunching:
if (!GKLocalPlayer.LocalPlayer.Authenticated) {
GKLocalPlayer.LocalPlayer.Authenticate (error => {
if (error != null)
Console.WriteLine("Error: " + error.LocalizedDescription);
});
}
This should display a Game Center "toast" saying "Welcome back, Player 1".
Here are some ideas if this doesn't work:
Make sure you have setup a new bundle id in the developer portal, and declare it in your Info.plist
Start filling out your app details in iTunes connect (Minimum is description, keywords, icon, 1 screenshot), and make sure to enable Game Center and add your new game to a group
Login with a test iTunes user in Game Center (create in ITC), or the login associated with your developer account
PS - I wouldn't worry about checking for iOS 4.1, just target iOS 5.0 and higher these days.