我已经编写了将 Twitter 集成到 android 中的代码。我得到了第一个 scrren，当我向 twitt 写一些消息并单击 twitt 按钮时，我得到了以下异常，因为与服务提供商的 OauthCommunication 异常通信失败。我已经正确输入了消费者密钥消费者秘密。
Public class MainActivity extends Activity {
private static final String TAG = "TwitterDemo";
private static final String CONSUMER_KEY = "xxx";
private static final String CONSUMER_SECRET = "xxx";
private static final String CALLBACK_SCHEME = "twitter-OAUTH-test-app";
private static final String CALLBACK_URL = CALLBACK_SCHEME + "://callback";
private static final String TWITTER_USER = "androidtestacc1@gmail.com";
private OAuthSignpostClient oauthClient;
private OAuthConsumer mConsumer;
private OAuthProvider mProvider;
private Twitter twitter;
SharedPreferences prefs;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mConsumer = new CommonsHttpOAuthConsumer(CONSUMER_KEY, CONSUMER_SECRET);
mProvider = new DefaultOAuthProvider(
"http://api.twitter.com/oauth/request_token",
"http://api.twitter.com/oauth/access_token",
"http://api.twitter.com/oauth/authorize");
prefs = PreferenceManager.getDefaultSharedPreferences(this);
String token = prefs.getString("token", null);
String tokenSecret = prefs.getString("tokenSecret", null);
if (token != null && tokenSecret != null) {
mConsumer.setTokenWithSecret(token, tokenSecret);
oauthClient = new OAuthSignpostClient(CONSUMER_KEY,
CONSUMER_SECRET, token, tokenSecret);
twitter = new Twitter(TWITTER_USER, oauthClient);
} else {
Log.d(TAG, "onCreate. Not Authenticated Yet " );
new OAuthAuthorizeTask().execute();
}
}
class OAuthAuthorizeTask extends AsyncTask<Void, Void, String> {
@Override
protected String doInBackground(Void... params) {
String authUrl;
String message = null;
Log.d(TAG, "OAuthAuthorizeTask mConsumer: " + mConsumer);
Log.d(TAG, "OAuthAuthorizeTask mProvider: " + mProvider);
try {
authUrl = mProvider.retrieveRequestToken(mConsumer,
CALLBACK_URL);
Intent intent = new Intent(Intent.ACTION_VIEW,
Uri.parse(authUrl));
startActivity(intent);
} catch (OAuthMessageSignerException e) {
message = "OAuthMessageSignerException";
e.printStackTrace();
} catch (OAuthNotAuthorizedException e) {
message = "OAuthNotAuthorizedException";
e.printStackTrace();
} catch (OAuthExpectationFailedException e) {
message = "OAuthExpectationFailedException";
e.printStackTrace();
} catch (OAuthCommunicationException e) {
message = "OAuthCommunicationException";
e.printStackTrace();
}
return message;
}
protected void onPostExecute(String result) {
super.onPostExecute(result);
if (result != null) {
Toast.makeText(MainActivity.this, result,
Toast.LENGTH_LONG).show();
}
}
}
public void tweet(View view) {
if (twitter == null) {
Toast.makeText(this, "Authenticate first", Toast.LENGTH_LONG)
.show();
return;
}
EditText status = (EditText) findViewById(R.id.editTextTweet);
new PostStatusTask().execute(status.getText().toString());
}
class PostStatusTask extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... params) {
try {
twitter.setStatus(params[0]);
return "Successfully posted: " + params[0];
} catch (TwitterException e) {
e.printStackTrace();
return "Error connecting to server.";
}
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
Toast.makeText(MainActivity.this, result,
Toast.LENGTH_LONG).show();
}
}
/* Responsible for retrieving access tokens from twitter */
class RetrieveAccessTokenTask extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... params) {
String message = null;
String oauthVerifier = params[0];
try {
// Get the token
Log.d(TAG, " RetrieveAccessTokenTask mConsumer: " + mConsumer);
Log.d(TAG, " RetrieveAccessTokenTask mProvider: " + mProvider);
Log.d(TAG, " RetrieveAccessTokenTask verifier: " + oauthVerifier);
mProvider.retrieveAccessToken(mConsumer, oauthVerifier);
String token = mConsumer.getToken();
String tokenSecret = mConsumer.getTokenSecret();
mConsumer.setTokenWithSecret(token, tokenSecret);
Log.d(TAG, String.format(
"verifier: %s, token: %s, tokenSecret: %s", oauthVerifier,
token, tokenSecret));
// Store token in prefs
prefs.edit().putString("token", token)
.putString("tokenSecret", tokenSecret).commit();
// Make a Twitter object
oauthClient = new OAuthSignpostClient(CONSUMER_KEY,
CONSUMER_SECRET, token, tokenSecret);
twitter = new Twitter(null, oauthClient);
Log.d(TAG, "token: " + token);
} catch (OAuthMessageSignerException e) {
message = "OAuthMessageSignerException";
e.printStackTrace();
} catch (OAuthNotAuthorizedException e) {
message = "OAuthNotAuthorizedException";
e.printStackTrace();
} catch (OAuthExpectationFailedException e) {
message = "OAuthExpectationFailedException";
e.printStackTrace();
} catch (OAuthCommunicationException e) {
message = "OAuthCommunicationException";
e.printStackTrace();
}
return message;
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
if (result != null) {
Toast.makeText(MainActivity.this, result,
Toast.LENGTH_LONG).show();
}
}
}
/*
* Callback once we are done with the authorization of this app with
* Twitter.
*/
@Override
public void onNewIntent(Intent intent) {
super.onNewIntent(intent);
Log.d(TAG, "intent: " + intent);
// Check if this is a callback from OAuth
Uri uri = intent.getData();
if (uri != null && uri.getScheme().equals(CALLBACK_SCHEME)) {
Log.d(TAG, "callback: " + uri.getPath());
String verifier = uri.getQueryParameter(OAuth.OAUTH_VERIFIER);
Log.d(TAG, "verifier: " + verifier);
Log.d(TAG, " xxxxxxxxxxx mConsumer access token: " + mConsumer.getToken());
Log.d(TAG, " xxxxxxxxxxxx mConsumer access token secret: " + mConsumer.getTokenSecret());
Log.d(TAG, " xxxxxxxxxxxxx OAuth.OAUTH_TOKEN: " + OAuth.OAUTH_TOKEN);
Log.d(TAG, " xxxxxxxxxxxxx OAuth.OAUTH_TOKEN_SECRET: " + OAuth.OAUTH_TOKEN_SECRET);
new RetrieveAccessTokenTask().execute(verifier);
}
}
public void logout(View view){
SharedPreferences.Editor editor = prefs.edit();
editor.putString("token", null);
editor.putString("tokenSecret", null);
editor.commit();
finish();
}
}
错误
10-19 15:18:55.424: W/System.err(995): oauth.signpost.exception.OAuthCommunicationException: Communication with the service provider failed: http://api.twitter.com/oauth/request_token
10-19 15:18:55.424: W/System.err(995): at oauth.signpost.AbstractOAuthProvider.retrieveToken(AbstractOAuthProvider.java:214)
10-19 15:18:55.438: W/System.err(995): at oauth.signpost.AbstractOAuthProvider.retrieveRequestToken(AbstractOAuthProvider.java:69)
10-19 15:18:55.655: W/System.err(995): ... 9 more