public static ImgurAuthorization GetInstance()
{
if (INSTANCE == null)
{
INSTANCE = new ImgurAuthorization();
}
return(INSTANCE);
}
public override Boolean ShouldOverrideUrlLoading(WebView view, String url)
{
try { // intercept the tokens
// http://example.com#access_token=ACCESS_TOKEN&token_type=Bearer&expires_in=3600
Boolean tokensURL = false;
if (url.StartsWith(AppConstants.IMGUR_REDIRECT_URL))
{
tokensURL = true;
Java.Util.Regex.Matcher m;
m = refreshTokenPattern.Matcher(url);
m.Find();
String refreshToken = m.Group(1);
m = accessTokenPattern.Matcher(url);
m.Find();
String accessToken = m.Group(1);
m = expiresInPattern.Matcher(url);
m.Find();
long expiresIn = Convert.ToInt64(m.Group(1));
ImgurAuthorization.GetInstance().SaveRefreshToken(refreshToken, accessToken, expiresIn);
// notify user of successful login
mActivity.RunOnUiThread(() => {
Toast.MakeText(MainActivity.GetAppContext(), "Logged In.", ToastLength.Short).Show();
mActivity.SetResult(Result.Ok);
mActivity.Finish();
});
}
return(tokensURL);
}
catch (Exception ex) {
// if user clicks on "deny" instead of logging in, we will get an error
Log.Error(TAG, "Error during login", ex);
mActivity.RunOnUiThread(() => {
Toast.MakeText(MainActivity.GetAppContext(), "Login failed.", ToastLength.Short).Show();
mActivity.Finish();
});
return(false);
}
}
protected override Java.Lang.Object DoInBackground(params Java.Lang.Object[] @params)
{
Stream imageIn;
try {
imageIn = mActivity.ContentResolver.OpenInputStream(mImageUri);
}
catch (Java.IO.FileNotFoundException e) {
Log.Error(TAG, "could not open Stream", e);
return(null);
}
HttpURLConnection conn = null;
Stream responseIn = null;
try {
conn = (HttpURLConnection) new URL(UPLOAD_URL).OpenConnection();
conn.DoOutput = true;
ImgurAuthorization.GetInstance().AddToHttpURLConnection(conn);
Stream outstream = conn.OutputStream;
Copy(imageIn, outstream); // set image
outstream.Flush();
outstream.Close();
if (conn.ResponseCode == Java.Net.HttpStatus.Ok) // execute api call
{
responseIn = conn.InputStream;
return(OnInput(responseIn));
}
else
{
Log.Info(TAG, "responseCode=" + conn.ResponseCode);
responseIn = conn.ErrorStream;
StringBuilder sb = new StringBuilder();
Scanner scanner = new Scanner(responseIn);
while (scanner.HasNext)
{
sb.Append(scanner.Next());
}
Log.Info(TAG, "error response: " + sb.ToString());
return(null);
}
}
catch (Exception ex) {
Log.Error(TAG, "Error during POST", ex);
return(null);
}
finally {
try {
responseIn.Close();
}
catch (Exception ignore) { }
try {
conn.Disconnect();
}
catch (Exception ignore) { }
try {
imageIn.Close();
}
catch (Exception ignore) { }
// delete temp file
ImageAdapter.DeleteTempFile();
}
}
