Android error - Facebook does not call authorization when revoking user permission
I am puzzled by the problem of re-authorizing users after revoking user rights. When the user revokes the permission of the app, an error dialog is displayed when trying to do something like posting to facebook. However, authorize()
it is not called. This is a problem with my code.
public void doAuthentication()
{
// here all your FB authentication related stuff.
mPrefs = getPreferences(MODE_PRIVATE);
String access_token = mPrefs.getString("access_token", null);
long expires = mPrefs.getLong("access_expires", 0);
if(access_token != null) {
facebook.setAccessToken(access_token);
}
if(expires != 0) {
facebook.setAccessExpires(expires);
}
/*
* Only call authorize if the access_token has expired.
*/
if(!facebook.isSessionValid()) {
facebook.authorize(Cats.this, new String[] { "publish_stream", "read_stream", "publish_checkins", "offline_access"}, new DialogListener() {
@Override
public void onComplete(Bundle values)
{
SharedPreferences.Editor editor = mPrefs.edit();
editor.putString("access_token", facebook.getAccessToken());
editor.putLong("access_expires", facebook.getAccessExpires());
editor.commit();
}
@Override
public void onFacebookError(FacebookError error) {}
@Override
public void onError(DialogError e) {}
@Override
public void onCancel() {}
});
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
facebook.authorizeCallback(requestCode, resultCode, data);
}
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public void share(){
if (! facebook.isSessionValid()) {
loginAndPostToWall();
}
else {
postToWall(messageToPost);
}
}
public void loginAndPostToWall(){
facebook.authorize(this, PERMISSIONS, Facebook.FORCE_DIALOG_AUTH, new LoginDialogListener());
}
public void postToWall(String message){
Bundle parameters = new Bundle();
parameters.putString("message", message);
parameters.putString("description", "topic share");
try {
facebook.request("me");
String response = facebook.request("me/feed", parameters, "POST");
Log.d("Tests", "got response: " + response);
if (response == null || response.equals("") ||
response.equals("false")) {
showToast("Blank response.");
}
else {
showToast("Message posted to your facebook wall!");
}
finish();
} catch (Exception e) {
showToast("Failed to post to wall!");
finish();
}
}
class LoginDialogListener implements DialogListener {
public void onComplete(Bundle values) {
saveCredentials(facebook);
if (messageToPost != null){
postToWall(messageToPost);
}
}
public void onFacebookError(FacebookError error) {
showToast("Authentication with Facebook failed!");
finish();
}
public void onError(DialogError error) {
showToast("Authentication with Facebook failed!");
finish();
}
public void onCancel() {
showToast("Authentication with Facebook cancelled!");
finish();
}
}
private void showToast(String message){
Toast.makeText(getApplicationContext(), message, Toast.LENGTH_SHORT).show();
}
private void clearCredentials() {
AsyncFacebookRunner mAsyncRunner = new AsyncFacebookRunner(facebook);
mAsyncRunner.logout(FacebookStatus.this, new RequestListener() {
@Override
public void onComplete(String response, Object state) {
runOnUiThread(new Runnable() {
@Override
public void run() {
saveCredentials(facebook);
Log.i("facebook session2", ""+facebook.isSessionValid());
showToast("You Succesfully logged out of the app");
finish();
}
});
}
@Override
public void onIOException(IOException e, Object state) {}
@Override
public void onFileNotFoundException(FileNotFoundException e,
Object state) {}
@Override
public void onMalformedURLException(MalformedURLException e,
Object state) {}
@Override
public void onFacebookError(FacebookError e, Object state) {}
});
}
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