public override async Task <bool> IsKeyValid(string key)
{
string queryAPI = "https://api.wunderground.com/api/";
string query = "/q/NY/New_York.json";
Uri queryURL = new Uri(queryAPI + key + query);
bool isValid = false;
WeatherException wEx = null;
try
{
if (String.IsNullOrWhiteSpace(key))
{
throw (wEx = new WeatherException(WeatherUtils.ErrorStatus.InvalidAPIKey));
}
// Connect to webstream
HttpClient webClient = new HttpClient();
HttpResponseMessage response = await webClient.GetAsync(queryURL);
response.EnsureSuccessStatusCode();
Stream contentStream = null;
#if WINDOWS_UWP
contentStream = WindowsRuntimeStreamExtensions.AsStreamForRead(await response.Content.ReadAsInputStreamAsync());
#elif __ANDROID__
contentStream = await response.Content.ReadAsStreamAsync();
#endif
// Reset exception
wEx = null;
// End Stream
webClient.Dispose();
// Load data
Rootobject root = await JSONParser.DeserializerAsync <Rootobject>(contentStream);
// Check for errors
if (root.response.error != null)
{
switch (root.response.error.type)
{
case "keynotfound":
wEx = new WeatherException(WeatherUtils.ErrorStatus.InvalidAPIKey);
isValid = false;
break;
}
}
else
{
isValid = true;
}
// End Stream
if (contentStream != null)
{
contentStream.Dispose();
}
}
catch (Exception)
{
isValid = false;
}
if (wEx != null)
{
#if WINDOWS_UWP
await Toast.ShowToastAsync(wEx.Message, ToastDuration.Short);
#elif __ANDROID__
new Android.OS.Handler(Android.OS.Looper.MainLooper).Post(() =>
{
Toast.MakeText(Application.Context, wEx.Message, ToastLength.Short).Show();
});
#endif
}
return(isValid);
}