1-st may have to do with HTTPS (my gut feeling)

public class TestAgainActivity extends Activity {

private String CONSUMER_KEY = "xxxxx";
private String CONSUMER_SECRET = "xxxxxxxxxxxx";
private String CALLBACK_URL = "myapp://twit";
private OAuthConsumer consumer;
private OAuthProvider provider;
private String authUrl;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

Button loginButton = new Button(this);
loginButton = (Button)findViewById(R.id.button1);
loginButton.setOnClickListener(login);

consumer = new CommonsHttpOAuthConsumer(
CONSUMER_KEY, CONSUMER_SECRET);

provider = new DefaultOAuthProvider(
"https://api.twitter.com/oauth/request_token",
"https://api.twitter.com/oauth/access_token",
"https://api.twitter.com/oauth/authorize");

}
private OnClickListener login = new OnClickListener() {
public void onClick(View v) {
AskOauth();
}

};

public void AskOauth(){

try {

authUrl = provider.retrieveRequestToken(consumer, CALLBACK_URL);

// Here i store the Consumer token and tokenSecret
SharedPreferences savedTokens = getSharedPreferences("savedTokens", 0);
SharedPreferences.Editor editor = savedTokens.edit();
editor.putString("savedToken", consumer.getToken());
editor.putString("savedTokenSecret", consumer.getTokenSecret());
editor.commit();

startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(authUrl)));

} catches{
}

}

@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();

SharedPreferences savedTokens = getSharedPreferences("savedTokens", 0);
String saved_token = savedTokens.getString("savedToken", "empty ShP");
String saved_tokenSecret = savedTokens.getString("savedTokenSecret", "empty ShP");
consumer.setTokenWithSecret(saved_token, saved_tokenSecret);

System.out.println("consumer token "+consumer.getToken());
System.out.println("consumer tokenSecret "+consumer.getTokenSecret());

Uri uri = this.getIntent().getData();

if (uri != null && uri.toString().startsWith(CALLBACK_URL)) {

SharedPreferences savedTokens = getSharedPreferences("savedTokens", 0);
String saved_token = savedTokens.getString("savedToken", "empty ShP");
String saved_tokenSecret = savedTokens.getString("savedTokenSecret", "empty ShP");
consumer.setTokenWithSecret(saved_token, saved_tokenSecret);

String verifier = uri.getQueryParameter(OAuth.OAUTH_VERIFIER);

try {

//Here i sometime get the error!
provider.retrieveAccessToken(consumer, verifier);
AccessToken accesToken = new AccessToken(consumer2.getToken(), consumer2.getTokenSecret());

Twitter twitter = new TwitterFactory().getInstance();
twitter.setOAuthConsumer(CONSUMER_KEY, CONSUMER_SECRET);
twitter.setOAuthAccessToken(accesToken);
Date d = new Date(System.currentTimeMillis());
String tweet = "This message is tweeted " + d.toLocaleString();
try {
twitter.updateStatus(tweet);
} catch (TwitterException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

provider.RetrieveAccesstoken(comsumer, verifier);

But the weird thing is i only get this error sometimes. first my code worked en i posted a message. Then the next day i tried to reinstall the app on my

home computer i got this error. back at my work station i got the same error again but after pressing the button to get permission it worked again and

posted a message on Twitter. What the hell is going on?! could somebody explain?

i also get the notification "Default buffer size used in BufferedReader constructor. It would be better to be explicit if an 8k-char buffer is required."

Does this have to do something with my memory or storing the Token secrets? it sounds like the service is too busy to reply when contacting it.

private String CONSUMER_KEY = "123";
private String CONSUMER_SECRET = "123";
private static final Uri CALLBACK_URI = Uri.parse("myapp://callback");
private String CALLBACK_URL = "myapp://callback";
CommonsHttpOAuthProvider provider ;
CommonsHttpOAuthConsumer consumer ;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

consumer = new CommonsHttpOAuthConsumer(
CONSUMER_KEY, CONSUMER_SECRET);

provider = new CommonsHttpOAuthProvider(
"http://twitter.com/oauth/request_token",
"http://twitter.com/oauth/access_token",
"http://twitter.com/oauth/authorize");
provider.setOAuth10a(true);

HttpClient client = new DefaultHttpClient();

String authUrl = "http://www.yahoo.com";
try {

//This line work perfect but it not redirect me to my application
authUrl = provider.retrieveRequestToken(consumer, OAuth.OUT_OF_BAND);

System.out.println("Auth URL 1: "+authUrl);

//I want to send a calll back but It give exception
authUrl = provider.retrieveRequestToken(consumer, OAuth.OAUTH_CALLBACK);

System.out.println("Auth URL 2: "+authUrl);

} catch (OAuthMessageSignerException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (OAuthNotAuthorizedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (OAuthExpectationFailedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (OAuthCommunicationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(authUrl)));
}