How can I open a game center leaderboard in tvOS? I've used this code for my iPhone games, 'leaderboardIdentifier' aren't available on tvOS.
I've planned to use the same leaderboard on the AppleTV (it will be the same game).
Many thanks for your help,
Stefan
#IBAction func handleGameCenter(sender: UIButton) {
let gcViewController = GKGameCenterViewController()
gcViewController.viewState = GKGameCenterViewControllerState.Leaderboards
gcViewController.leaderboardIdentifier = gamePrefix + "Leaderboard"
gcViewController.gameCenterDelegate = self
// Show leaderboard
self.presentViewController(gcViewController, animated: true, completion: nil)
}
func gameCenterViewControllerDidFinish(gameCenterViewController: GKGameCenterViewController) {
gameCenterViewController.dismissViewControllerAnimated(true, completion: nil)
}
I also had the problem with "No data available" screen but finally solved it. This worked for me to open gamecenter leaderboard on tvOS:
open Assets.xcassets (same file where you set your app icon/launchscreen)
right click in the panel with appicon/launchsreen and select Game Center -> New Apple TV Leaderboard
add graphics for the new leaderboard
while leaderboard is selected in assets file on the right side panel find Identifier field and put identifier of your leaderboard there
use this code to open the leaderboard:
GKGameCenterViewController *gcViewController = [[GKGameCenterViewController alloc] init];
gcViewController.gameCenterDelegate = self;
[self presentViewController:gcViewController animated:YES completion:nil];
Just this seems to work:
GKGameCenterViewController *gameCenterController = [[GKGameCenterViewController alloc] init];
if (gameCenterController != nil)
{
gameCenterController.gameCenterDelegate = self;
[self presentViewController: gameCenterController animated: YES completion:nil];
}
.viewState and .leaderboardIdentifier are not available on tvOS, so you can open the GC controller with that code, but the page will say "No data available".
Related
In iOS 8 and lower show a UIActionSheet when keyboard is presented will present the action sheet over the keyboard. With iOS 9 this is no longer the case.
In my app we have a chat functionality and want the show a action over the keyboard. We used to use UIActionSheet which worked fine until iOS 8. In iOS 9 the action sheet is present behind the keyboard. I've tried both UIActionSheet and UIAlertController.
What we want is a action sheet like in messages.app
I've tried placing the action sheet in it own window and overriding canBecomeFirstResponder which just made the keyboard disappear.
I have implemented exactly this in our app. The trick is to have the alert controller appear on a different window. This is how the UIActionSheet implementation does it, and works great on iOS 8, but on 9, Apple has moved the keyboard implementation to a window which has a very high window level (10000000). The fix is to give your alert window an even higher window level (as a custom double value, not using the provided constants).
When using a custom window which will have transparency, make sure to read my answer here, regarding background color, to prevent window becoming black during rotation transitions.
_alertWindow = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
_alertWindow.rootViewController = [UIViewController new];
_alertWindow.windowLevel = 10000001;
_alertWindow.hidden = NO;
_alertWindow.tintColor = [[UIWindow valueForKey:#"keyWindow"] tintColor];
__weak __typeof(self) weakSelf = self;
UIAlertController* alert = [UIAlertController alertControllerWithTitle:#"Test" message:nil preferredStyle:UIAlertControllerStyleActionSheet];
[alert addAction:[UIAlertAction actionWithTitle:#"Cancel" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
weakSelf.alertWindow.hidden = YES;
weakSelf.alertWindow = nil;
}]];
[alert addAction:[UIAlertAction actionWithTitle:#"Test" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
weakSelf.alertWindow.hidden = YES;
weakSelf.alertWindow = nil;
}]];
[_alertWindow.rootViewController presentViewController:alert animated:YES completion:nil];
The answer supplied by Leo is broken as of iOS 11, because Apple now prevents you from setting a windowLevel above 10000000. A fix is to implement a custom UIWindow and override the windowLevel receiver:
#interface TopWindow : UIWindow #end
#implementation TopWindow
- (UIWindowLevel) windowLevel {
return 20000000.000;
}
#end
// usage:
UIWindow* w = [[TopWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
w.rootViewController = [UIViewController new];
w.hidden = NO;
[w.rootViewController presentViewController:yourActionSheetController animated:YES completion:nil];
This approach should be backwards compatible, but haven't tested all known versions. Happy hacking!
Based on Leo Natan's answer, I've created a Swift extension for presenting an alert sheet over the keyboard.
In my brief testing, the alertWindow is deallocated after the alert is dismissed, I believe because there's no strong reference to it outside of the alert. This means there's no need to hide or deallocate it in your UIAlertActions.
extension UIAlertController {
func presentOverKeyboard(animated: Bool, completion: (() -> Void)?) {
let alertWindow = UIWindow(frame: UIScreen.mainScreen().bounds)
// If you need a white/hidden/other status bar, use an appropriate VC.
// You may not need a custom class, and you can just use UIViewController()
alertWindow.rootViewController = whiteStatusBarVC()
alertWindow.windowLevel = 10000001
alertWindow.hidden = false
// Set to a tint if you'd like
alertWindow.tintColor = UIColor.greenColor()
alertWindow.rootViewController?.presentViewController(self, animated: animated, completion: completion)
}
}
private class whiteStatusBarVC: UIViewController {
private override func preferredStatusBarStyle() -> UIStatusBarStyle {
return .LightContent
}
}
use UIAlertController instead of UIActionSheet
Im New In Development think and i'm wondering about some things like the game center button , how to connect that button is there any ready code for that, the same question about the rate button . Can any one tell me how to do that
//Rate Button
if ([node.name isEqualToString:#"rateButton"]) //Your Rate Button name
{
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:#"itms-apps://itunes.apple.com/app/id919770861"]];//itms-apps://itunes.apple.com/app/idYourAppID
}
//Game Center Button
- (void)showGKGameCenterViewController:
(UIViewController *)viewController
{
if (!_enableGameCenter) {
NSLog(#"Local play is not authenticated");
}
GKGameCenterViewController *gameCenterViewController =
[[GKGameCenterViewController alloc] init];
gameCenterViewController.gameCenterDelegate = self;
gameCenterViewController.viewState =
GKGameCenterViewControllerStateAchievements;
[viewController presentViewController:gameCenterViewController
animated:YES
completion:nil];
}
if ([node.name isEqualToString:#"GameCenter"]) //Your Game Center Button Name
{
[self showGKGameCenterViewController:yourViewController];
}
I have a GameCenter Sandbox-Account have tested my game, earned achievements, etc.
Now I've made some changes and want to test earning Achievements again!
Do I have to make an entire new Sandbox-Account or is there a way to reset my account?
The following code is from the Apple Documentation.
- (void) resetAchievements
{
// Clear all locally saved achievement objects.
achievementsDictionary = [[NSMutableDictionary alloc] init];
// Clear all progress saved on Game Center
[GKAchievement resetAchievementsWithCompletionHandler:^(NSError *error)
{
if (error != nil)
// handle errors
}];
}
Also have a look at Apple's sample project GKTapper.
// Reset all the achievements for local player
- (void)resetAchievements
{
[GKAchievement resetAchievementsWithCompletionHandler: ^(NSError *error)
{
if (!error) {
[storedAchievements release];
storedAchievements = [[NSMutableDictionary alloc] init];
// overwrite any previously stored file
[self writeStoredAchievements];
} else {
// Error clearing achievements.
}
}];
}
I have a music button in the main UI of iOS and I want the button function as stop music button and at the same time can play the music again. My problem is I can only stop the music but can't play it again. Here is my iOS code in xcode4. How can I define one button for both play and stop music button? I have assigned one button for both stopMusic and playMusic but it doesn't work.
- (IBAction)stopMusic{
self.playBgMusic.enabled = YES;
[self.player stop];
}
- (IBAction)playMusic{
self.playBgMusic.enabled = YES;
[self.player play];
}
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad
{
NSString *path = [[NSBundle mainBundle] pathForResource:#"music" ofType:#"mp3"];
self.player=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
player.delegate = self;
[player play];
player.numberOfLoops = -1;
[super viewDidLoad];
}
Rather than have a single button try to send two different messages (stopMusic, playMusic), have it send toggleMusic every time. The toggleMusic method can then stop or play the music based on the current state of the player.
- (IBAction)toggleMusic{
if ([self.player isPlaying] == YES) {
[self.player stop];
} else {
[self.player play];
}
self.playBgMusic.enabled = YES;
}
I am trying to capture tap event on my MKMapView, this way I can drop a MKPinAnnotation on the point where user tapped. Basically I have a map overlayed with MKOverlayViews (an overlay showing a building) and I would like to give user more information about that Overlay when they tap on it by dropping a MKPinAnnotaion and showing more information in the callout.
Thank you.
You can use a UIGestureRecognizer to detect touches on the map view.
Instead of a single tap, however, I would suggest looking for a double tap (UITapGestureRecognizer) or a long press (UILongPressGestureRecognizer). A single tap might interfere with the user trying to single tap on the pin or callout itself.
In the place where you setup the map view (in viewDidLoad for example), attach the gesture recognizer to the map view:
UITapGestureRecognizer *tgr = [[UITapGestureRecognizer alloc]
initWithTarget:self action:#selector(handleGesture:)];
tgr.numberOfTapsRequired = 2;
tgr.numberOfTouchesRequired = 1;
[mapView addGestureRecognizer:tgr];
[tgr release];
or to use a long press:
UILongPressGestureRecognizer *lpgr = [[UILongPressGestureRecognizer alloc]
initWithTarget:self action:#selector(handleGesture:)];
lpgr.minimumPressDuration = 2.0; //user must press for 2 seconds
[mapView addGestureRecognizer:lpgr];
[lpgr release];
In the handleGesture: method:
- (void)handleGesture:(UIGestureRecognizer *)gestureRecognizer
{
if (gestureRecognizer.state != UIGestureRecognizerStateEnded)
return;
CGPoint touchPoint = [gestureRecognizer locationInView:mapView];
CLLocationCoordinate2D touchMapCoordinate =
[mapView convertPoint:touchPoint toCoordinateFromView:mapView];
MKPointAnnotation *pa = [[MKPointAnnotation alloc] init];
pa.coordinate = touchMapCoordinate;
pa.title = #"Hello";
[mapView addAnnotation:pa];
[pa release];
}
I setup a long press (UILongPressGestureRecognizer) in viewDidLoad: but it just detect the only one touch from the first.
Where can i setup a long press to detect all touch? (it means the map ready everytime waiting user touch to screen to push a pin)
The viewDidLoad: method!
- (void)viewDidLoad {
[super viewDidLoad];mapView.mapType = MKMapTypeStandard;
UILongPressGestureRecognizer *longPressGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:#selector(handleLongPressGesture:)];
[self.mapView addGestureRecognizer:longPressGesture];
[longPressGesture release];
mapAnnotations = [[NSMutableArray alloc] init];
MyLocation *location = [[MyLocation alloc] init];
[mapAnnotations addObject:location];
[self gotoLocation];
[self.mapView addAnnotations:self.mapAnnotations];
}
and the handleLongPressGesture method:
-(void)handleLongPressGesture:(UIGestureRecognizer*)sender {
// This is important if you only want to receive one tap and hold event
if (sender.state == UIGestureRecognizerStateEnded)
{NSLog(#"Released!");
[self.mapView removeGestureRecognizer:sender];
}
else
{
// Here we get the CGPoint for the touch and convert it to latitude and longitude coordinates to display on the map
CGPoint point = [sender locationInView:self.mapView];
CLLocationCoordinate2D locCoord = [self.mapView convertPoint:point toCoordinateFromView:self.mapView];
// Then all you have to do is create the annotation and add it to the map
MyLocation *dropPin = [[MyLocation alloc] init];
dropPin.latitude = [NSNumber numberWithDouble:locCoord.latitude];
dropPin.longitude = [NSNumber numberWithDouble:locCoord.longitude];
// [self.mapView addAnnotation:dropPin];
[mapAnnotations addObject:dropPin];
[dropPin release];
NSLog(#"Hold!!");
NSLog(#"Count: %d", [mapAnnotations count]);
}
}
If you want to use a single click/tap in the map view, here's a snippet of code I'm using. (Cocoa and Swift)
let gr = NSClickGestureRecognizer(target: self, action: "createPoint:")
gr.numberOfClicksRequired = 1
gr.delaysPrimaryMouseButtonEvents = false // allows +/- button press
gr.delegate = self
map.addGestureRecognizer(gr)
in the gesture delegate method, a simple test to prefer the double-tap gesture …
func gestureRecognizer(gestureRecognizer: NSGestureRecognizer, shouldRequireFailureOfGestureRecognizer otherGestureRecognizer: NSGestureRecognizer) -> Bool {
let other = otherGestureRecognizer as? NSClickGestureRecognizer
if (other?.numberOfClicksRequired > 1) {
return true; // allows double click
}
return false
}
you could also filter the gesture in other delegate methods if you wanted the Map to be in various "states", one of which allowed the single tap/click
For some reason, the UIGestureRecognizer just didn't work for me in Swift. When I use the UIGestureRecognizer way. When I used the touchesEnded method, it returns a MKNewAnnotationContainerView. It seems that this MKNewAnnotationContainerView blocked my MKMapView. Fortunately enough, it's a subview of MKMapView. So I looped through MKNewAnnotationContainerView's superviews till self.view to get the MKMapView. And I managed to pin the mapView by tapping.
Swift 4.1
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
let t = touches.first
print(t?.location(in: self.view) as Any)
print(t?.view?.superview?.superview.self as Any)
print(mapView.self as Any)
var tempView = t?.view
while tempView != self.view {
if tempView != mapView {
tempView = tempView?.superview!
}else if tempView == mapView{
break
}
}
let convertedCoor = mapView.convert((t?.location(in: mapView))!, toCoordinateFrom: mapView)
let pin = MKPointAnnotation()
pin.coordinate = convertedCoor
mapView.addAnnotation(pin)
}