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@Override
public boolean shouldOverrideUrlLoading(WebView view, String authorizationUrl) {
//This method will be called when the Auth proccess redirect to our RedirectUri.
//We will check the url looking for our RedirectUri.
if (authorizationUrl.startsWith(REDIRECT_URI)) {
Log.i("Authorize", "");
Uri uri = Uri.parse(authorizationUrl);
//We take from the url the authorizationToken and the state token. We have to check that the state token returned by the Service is the same we sent.
//If not, that means the request may be a result of CSRF and must be rejected.
String stateToken = uri.getQueryParameter(STATE_PARAM);
if (stateToken == null || !stateToken.equals(STATE)) {
Log.e("Authorize", "State token doesn't match");
return true;
}
//If the user doesn't allow authorization to our application, the authorizationToken Will be null.
String authorizationToken = uri.getQueryParameter(RESPONSE_TYPE_VALUE);
if (authorizationToken == null) {
Log.i("Authorize", "The user doesn't allow authorization.");
return true;
}
Log.i("Authorize", "Auth token received: " + authorizationToken);
//Generate URL for requesting Access Token
String accessTokenUrl = getAccessTokenUrl(authorizationToken);
//We make the request in a AsyncTask
new PostRequestAsyncTask().execute(accessTokenUrl);
} else {
//Default behaviour
Log.i("Authorize", "Redirecting to: " + authorizationUrl);
webView.loadUrl(authorizationUrl);
}
return true;
}
});
String authUrl = getAuthorizationUrl();
Log.i("Authorize", "Loading Auth Url: " + authUrl);
webView.loadUrl(authUrl);
}
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