/** Restores content for consoleContent with the key prefKey. */
private void restoreConsole(List<String> consoleContent, String prefKey) {
Logger.d("Service restoreConsole for " + prefKey);
SharedPreferences prefs =
PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
String savedConsole = prefs.getString(prefKey, null);
if (savedConsole != null) {
Type listType = new TypeToken<ArrayList<String>>() {}.getType();
ArrayList<String> items =
MeasurementJsonConvertor.getGsonInstance().fromJson(savedConsole, listType);
if (items != null) {
Logger.d("Read " + items.size() + " items from prefkey " + prefKey);
for (String item : items) {
insertStringToConsole(consoleContent, item);
}
Logger.d("Restored " + consoleContent.size() + " entries to console " + prefKey);
}
}
}
/** Persists the content of the console as a JSON string */
private void saveConsoleContent(List<String> consoleContent, String prefKey) {
Logger.d("Service saveConsoleContent for key " + prefKey);
SharedPreferences prefs =
PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
SharedPreferences.Editor editor = prefs.edit();
int length = consoleContent.size();
Logger.d("Saving " + length + " entries to prefKey " + prefKey);
ArrayList<String> items = new ArrayList<String>();
// Since we use insertToConsole later on to restore the content, we have to store them
// in the reverse order to maintain the same look
for (int i = length - 1; i >= 0; i--) {
items.add(consoleContent.get(i));
}
Type listType = new TypeToken<ArrayList<String>>() {}.getType();
editor.putString(prefKey, MeasurementJsonConvertor.getGsonInstance().toJson(items, listType));
editor.commit();
}