private void startOrStopMarketRatePolling() {
if (address != null && !pocket.isType(address)) {
String pair = ShapeShift.getPair(pocket.getCoinType(), (CoinType) address.getParameters());
if (timer == null) {
startPolling(pair);
} else {
pollTask.updatePair(pair);
}
} else if (timer != null) {
stopPolling();
}
}
@Override
public void onPause() {
if (pocket != null) pocket.removeEventListener(transactionChangeListener);
transactionChangeListener.removeCallbacks();
resolver.unregisterContentObserver(addressBookObserver);
amountCalculatorLink.setListener(null);
stopPolling();
super.onPause();
}