public void localUpdate() {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
String[] currencies = fxRates.getCurrencies();
for (int i = 0; i < currencies.length; i++) {
prices.put(
currencies[i],
Double.longBitsToDouble(prefs.getLong(currencies[i], Double.doubleToLongBits(0.0))));
symbols.put(currencies[i], prefs.getString(currencies[i] + "-SYM", null));
}
}
public static CurrencyExchange getInstance(Context ctx) {
context = ctx;
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
strFiatCode = prefs.getString("ccurrency", "USD");
if (instance == null) {
fxRates = new ExchangeRates();
prices = new HashMap<String, Double>();
symbols = new HashMap<String, String>();
String[] currencies = fxRates.getCurrencies();
for (int i = 0; i < currencies.length; i++) {
prices.put(
currencies[i],
Double.longBitsToDouble(prefs.getLong(currencies[i], Double.doubleToLongBits(0.0))));
symbols.put(currencies[i], prefs.getString(currencies[i] + "-SYM", null));
}
instance = new CurrencyExchange();
}
if (System.currentTimeMillis() - ts > (15 * 60 * 1000)) {
getExchangeRates();
String[] currencies = fxRates.getCurrencies();
SharedPreferences.Editor editor = prefs.edit();
for (int i = 0; i < currencies.length; i++) {
if (fxRates.getLastPrice(currencies[i]) > 0.0) {
editor.putLong(
currencies[i], Double.doubleToRawLongBits(fxRates.getLastPrice(currencies[i])));
editor.putString(currencies[i] + "-SYM", fxRates.getSymbol(currencies[i]));
}
}
editor.commit();
}
return instance;
}
private static void getExchangeRates() {
ts = System.currentTimeMillis();
DownloadFXRatesTask task = new DownloadFXRatesTask(context, fxRates);
task.execute(new String[] {fxRates.getUrl()});
}
public String[] getBlockchainCurrencies() {
return fxRates.getCurrencies();
}