Android, Allow user to select audio profile and save that choice for later use

Question

The tutorials I see is allowing user to activate audio/sound profile by clicking the button immediately, i dont want to active selected profile immediately, i want to save user's choice for sound profile and activate that choice later with respect to some event, how can i do that, also suggest some good source to learn audio related things in android. I also want to do same treatment for ringer, message and notification volumes

Answer 1

You can use Android preferences to save the user's choices for later use:

//save prefs
public void savePrefs(String key, Boolean value){
    SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
    SharedPreferences.Editor editor = sharedPreferences.edit();
    editor.putBoolean(key, value);
    editor.commit();
}

//get prefs
private String loadPreferences(String key, Boolean value){
    SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
    String data = sharedPreferences.getBoolean(key, value);
    return data;
}

If the user clicks audio button, set audioChoice = true in your code. Then save audioChoice into preferences:

private boolean audioChoice = false;

audioChoice = savePrefs("Choice", audioChoice);

If you want to retrieve audioChoice at a later time, do this:

audioChoice = loadPreferences("Choice", audioChoice);

If you want more information, here is the android documentation on using SharedPreferences: http://developer.android.com/guide/topics/data/data-storage.html#pref