Crypto Calculator
Crypto calculator gets data from an API called Alpha Vantage. This API has data for crypto as well as stocks. I manually grabbed the data from the API and then use text fields and buttons to display the data and do conversions. An update to this app will implement json parsing to get the data. It uses a variety of currency types as well as crypto types that are available through the API.
Grabbing data from API:
@Override
public void onClick(View v) {
final String cryptoType1 = cryptoType.getSelectedItem().toString();
final String currencyType1 = currencyType.getSelectedItem().toString();
final String URL = ("https://www.alphavantage.co" +
"/query?function=CURRENCY_EXCHANGE_RATE" +
"&from_currency=" + cryptoType1 +
"&to_currency=" + currencyType1 + "&apikey=4YYBRNYMR141GDIL");
String results = "";
fetchData getData = new fetchData();
try {
results = getData.execute(URL).get();
} catch (ExecutionException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
crypto.setText(results);
Double currencyTotal = 0.00;
if((cryptoAmount.getText().toString().length() > 0
&& dollarAmount.getText().toString().length() > 0)
|| (cryptoAmount.getText().toString().length() == 0
&& dollarAmount.getText().toString().length() == 0)) {
Toast.makeText(MainActivity.this, "Use One Input", Toast.LENGTH_SHORT).show();
}
else if(cryptoAmount.getText().toString().length() > 0) {
dollarAmount.setText("");
currencyTotal = Double.parseDouble(results) * Double.parseDouble(cryptoAmount.getText().toString());
}
else if(dollarAmount.getText().toString().length() > 0) {
cryptoAmount.setText("");
currencyTotal = Double.parseDouble(dollarAmount.getText().toString()) / Double.parseDouble(results);
}
total.setText(currencyTotal.toString());
}
});
}
}