Simple Swift currency converter using Yahoo Query Language (YQL).

Simply drag the Library folder to your project.

Use the fetchQuoteWithBaseCurrency method to pass the currency symbol you want to convert and the conversion result currency symbol. If the method succeeds, it will return an FCBQuote optional.

If there's some connection issue, the block will return an error as DownloadError, or in case the currency is invalid or Yahoo can't figure it out the value, it will return BadData error.

        let currencyService = FCBCurrencyService()
        currencyService.fetchQuoteWithBaseCurrency("USD", resultCurrency: "CAD") { (quote, error) in
            if let result = quote {
                print("Currency: \(result.name) value: \(result.rate)")
            } else if let resultError = error {
                switch resultError {
                case .DownloadError :
                    print("Downlaod error")
                case .BadData:
                    print("Invalid Currency")
                }
            }
        }

Output Currency: USD/CAD value: 1.3111

See Example project for more samples.

FCBCurrencyService is released under the MIT license. See the LICENSE file for more info.