How to implement a game launch counter in LibGDX

Question

I'm writing a game using LibGDX in which I want to save the number of launches of a game in a text file. So, In the create() of my starter class, I have the following code ..but it's not working

public class MainStarter extends Game {

    private int count;

    @Override
    public void create() {
        // Set up the application
        AppSettings.setUp();
        if(SettingsManager.isFirstLaunch()){
            SettingsManager.createTextFileInLocalStorage("gamedata");
            SettingsManager.writeLine("gamedata", "Launched:"+count ,FileType.LOCAL_FILE );
        }
        else{
            SettingsManager.writeLine("gamedata", "Not First launch :"+count++ ,FileType.LOCAL_FILE );
        }

        //
        // Load assets before setting the screen
        // #####################################
        Assets.loadAll();

        // Set the tests screen
        setScreen(new MainMenuScreen(this, "Main Menu"));
    }   
}

What is the proper way to do this?

Answer 1

I'm not sure what exactly the "SettingsManager" is, as you haven't provided any information on what it does internally. Normally for this kind of persistent data you would use Preferences to store it in a cross-platform manner. Something like the following code in your create() method:

Preferences prefs = Gdx.app.getPreferences("My Preferences");
int count = prefs.getInteger("RunCount", 0);
count++;
prefs.putInteger("RunCount", count);
prefs.flush();

Answer 2

To get the count of your game launch first make a LocalPreferences class and write following

public class LocalPreferencees{
    Preferences prefs;

    public LocalPreferencees() {
        prefs = Gdx.app.getPreferences("GAMECOUNT");         
        }

     public void setCount (int count) {
        prefs.putInteger("COUNT",count);
        prefs.flush();
    }

    public int getCount() {
        return prefs.getInteger("COUNT",0);
    }
}

then in your create() method write following

@Override
public void create(){

    LocalPreferences preferences=new LocalPreferences();

   //this will get your game launch count
    int count=preferences.getCount();

    //now set the count
    prferences.setCount(count+1);

}  

So each time when your game launches you will get the launchCount .