Store as much information in the bundle as would be needed to restart the app exactly where it left off. In this method, you're passed a Bundle, which is basically like a dictionary. I recommend saving the data in a file on the sdcard which allows you to not only recall it later, but allows the user to mount the device as an external drive on their own computer and grab the data for use in other places.ġ) Implement onSaveInstanceState(). OP is asking for a "save" function, which is more than just preserving data across executions of the program (which you must do for the app to be worth anything.) (Note that if you pick this, it requires a permission) Now, you can also look into External Storage, but I don't recommend that in this particular case, because the external storage might not be there later. HomeScoreBytes = (byte) (homeScore > 16) //lines, because I've never seen aįileOutputStream outputStream = getApplicationContext().openFileOutput(FILENAME, Context.MODE_PRIVATE) HomeScoreBytes = (byte) (homeScore > 8) //you can probably skip these two However, the process can be trickier because everything will be stored as bytes, and that means you have to be careful to keep your read and write processes working together. You can store anything you want to a file, so this gives you more flexibility.
This, in my opinion, is what you might be looking for. Int homeScore = settings.getInt("homeScore", 0) SharedPreferences settings = getApplicationContext().getSharedPreferences(PREFS_NAME, 0) SharedPreferences.Editor editor = settings.edit() Įditor.putInt("homeScore", YOUR_HOME_SCORE) This means that you give a value a name, say, "homeScore" and store the value to this key. This is a framework unique to Android that allows you to store primitive values (such as int, boolean, and String, although strictly speaking String isn't a primitive) in a key-value framework.
You have two options, and I'll leave selection up to you.
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