SavedGame loading doesn't work on libgdx iOS game

[DmitriySmerchinskiy]

Hi, and thank you so much for your library. It's very useful for my game.

It works pretty straightforward for my Android build, but doesn't work on iOS. I use emulator for iOS testing and see logs, that the library successfully performed game save, but when trying to load I see that there aren't any saved files. Of course, I logged in before trying to obtain saves. And on my emulator, I logged in with Apple ID and iCloud available also. I also tried to test on real device, but after removing game and reinstalling it saves didn't restore. Unfortunately I can't see logs from my real devices due to recent updates of iOS. So I only can see logs from the emulator.

This is my code how I create GameCenterServiceHandler:

@Override
    public GameServicesHandler getGameServicesHandler() {
        if (gameCenterServicesHandler == null) {
            gameCenterServicesHandler = new GameCenterServicesHandler(UIApplication.getSharedApplication().getKeyWindow().getRootViewController());
        }
        return gameCenterServicesHandler;
    }

public interface GameServiceWrapper {

    GameServicesHandler getGameServicesHandler();
}

This is my code how I login before trying to load saves:

public void login(final CompletionListener completionListener) {
        gameServiceWrapper.getGameServicesHandler().isLoggedIn().onCompletion(new ServiceCompletionCallback<Boolean>() {
            @Override
            public void onSuccess(Boolean isLoggedIn) {
                System.out.println("Games Service: Successfully checked is player logged in = " + isLoggedIn);
                if (!isLoggedIn) {
                    gameServiceWrapper.getGameServicesHandler().login().onCompletion(new ServiceCompletionCallback<Void>() {
                        @Override
                        public void onSuccess(Void result) {
                            System.out.println("Game Service: Player successfully logged in");
                            completionListener.completed();
                            gameServiceWrapper.getGameServicesHandler().getPlayerName().onCompletion(new ServiceCompletionCallback<String>() {
                                @Override
                                public void onSuccess(String result) {
                                    System.out.println("Game Service: Player name = " + result);
                                }

                                @Override
                                public void onError(ServiceError error) {
                                    System.err.println("Game Service: Unable to get player name, because " + error.getErrorMessage());
                                }
                            });
                        }

                        @Override
                        public void onError(ServiceError error) {
                            System.err.println("Games Service: Unable to log in player, because: " + error.getErrorMessage());
                            completionListener.completed();
                        }
                    });
                } else {
                    completionListener.completed();
                }
            }

            @Override
            public void onError(ServiceError error) {
                System.err.println("Games Service: Unable to check is player logged in");
                completionListener.completed();
            }
        });
    }

This is my code how I load save file:

public void loadFile(final String fileNameAndId, final FileLoadingCallback callback) {
        final FileHandle file = Gdx.files.local(fileNameAndId);
        gameServiceWrapper.getGameServicesHandler().getSavedGames().onCompletion(new ServiceCompletionCallback<Iterable<SavedGame>>() {
            @Override
            public void onSuccess(Iterable<SavedGame> result) {
                boolean found = false;
                System.out.println("Game Service: Saved Games loaded. List has next = " + result.iterator().hasNext());
                for (SavedGame savedGame : result) {
                    System.out.println("Game Service: Save found with id = " + savedGame.getId() + " and title = " + savedGame.getTitle());
                    if (savedGame.getId().contains(fileNameAndId)) {
                        if (!file.exists() || savedGame.getTimestamp() > file.lastModified()) {
                            System.out.println("Game Service: Service file more actual " + fileNameAndId);
                            loadAndRead(savedGame, file, callback);
                        } else {
                            System.out.println("Game Service: Local file is more actual than service file " + fileNameAndId);
                            callback.loadCompleted(file);
                        }
                        found = true;
                        break;
                    }
                }
                if (!found) {
                    System.err.println("Game Service: Game save not found for file " + fileNameAndId);
                    callback.loadCompleted(file);
                }
            }

            @Override
            public void onError(ServiceError error) {
                System.err.println("Game Service: Unable to get saved games trying load " + fileNameAndId);
                callback.loadCompleted(file);
            }
        });
    }

private void loadAndRead(final SavedGame savedGame, final FileHandle file, final FileLoadingCallback callback) {
        gameServiceWrapper.getGameServicesHandler().loadSavedGameData(savedGame).onCompletion(new ServiceCompletionCallback<byte[]>() {
            @Override
            public void onSuccess(byte[] levelsAvailabilityBytes) {
                file.writeBytes(levelsAvailabilityBytes, false);
                callback.loadCompleted(file);
            }

            @Override
            public void onError(ServiceError error) {
                System.err.println("Game Service: Unable to load game save for " + savedGame.getId());
                callback.loadCompleted(file);
            }
        });
    }

This is my code how I save file:

public void saveFile(String fileNameAndId, FileHandle file) {
        saveFile(fileNameAndId, file, null);
    }

    public void saveFile(final String fileNameAndId, final FileHandle file, final CompletionListener completionListener) {
        gameServiceWrapper.getGameServicesHandler().submitSavedGame(new GameSave(fileNameAndId), file.readBytes()).onCompletion(new ServiceCompletionCallback<Void>() {
            @Override
            public void onError(ServiceError error) {
                System.err.println("Game Service: Error saving file " + fileNameAndId);
                if (completionListener != null) {
                    completionListener.completed();
                }
            }

            @Override
            public void onSuccess(Void result) {
                System.out.println("Game Service: Successfully saved file " + fileNameAndId);
                if (completionListener != null) {
                    completionListener.completed();
                }
            }
        });
    }

I load saves on app launch and save each time data is changed. So I see these logs on startup: (I show properties.json as an example)

Games Service: Successfully checked is player logged in = false
Game Service: Player successfully logged in
Game Service: Player name = dmytro-diviator
Game Service: Saved Games loaded. List has next = false
Game Service: Game save not found for file properties.json

When trying to save, I see these logs:

Game Service: Successfully saved file preferences.json

My environment:

MacOS Sonoma 14.4.1
Android Studio Iguana | 2023.2.1 Patch 1
iOS Simulator Version 15.3 (1019.2)

gdxVersion = '1.12.1'
roboVMVersion = '2.3.21'
gdxGameservicesVersion = '3.0.0'

classpath 'com.android.tools.build:gradle:8.1.2'
classpath 'com.google.gms:google-services:4.4.0'
classpath 'com.mobidevelop.robovm:robovm-gradle-plugin:2.3.20'

Also, I did everything according to this guide

• I updated frameworks in robovm.xml and link to entitlements.plist.xml
• Added entitlements.plist.xml
• Added Game Center capability for my app bundle id at this link
• Used GameCenterServiceHandler in pretty same way as described in the guide, but with some changes according to the latest library updates not presented in the guide.

Will be very glad to get help from you. Thanks in advance.

[DmitriySmerchinskiy]

Also added iCloud support turning iCloud documents checkbox on. Then, I found that iCloud stores data from my app, so looks like this issue is related to loading SavedGames:

gameServiceWrapper.getGameServicesHandler().getSavedGames()