我有现有的 twitter 集成代码，它正在工作，但现在它抛出了这个错误：-
11-11 02:30:34.835: E/dalvikvm(2278): Could not find class 'twitter4j.TwitterFactory', referenced from method com.myapp.TwitterApp.<init>
然后强制关闭此错误：-
11-11 02:30:35.265: E/AndroidRuntime(2278): FATAL EXCEPTION: main
11-11 02:30:35.265: E/AndroidRuntime(2278): java.lang.VerifyError: com/myapp/TwitterApp
它在此声明中引发错误：-
mTwitter = new TwitterApp(this, Share.twitter_consumer_key,
Share.twitter_secret_key);
我的 TwitterApp 类代码是：--
package com.myapp;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLDecoder;
import oauth.signpost.OAuthProvider;
import oauth.signpost.basic.DefaultOAuthProvider;
import oauth.signpost.commonshttp.CommonsHttpOAuthConsumer;
import twitter4j.Twitter;
import twitter4j.TwitterException;
import twitter4j.TwitterFactory;
import twitter4j.User;
import twitter4j.auth.AccessToken;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Handler;
import android.os.Message;
import android.view.Window;
public class TwitterApp {
private Twitter mTwitter;
private TwitterSession mSession;
private AccessToken mAccessToken;
private CommonsHttpOAuthConsumer mHttpOauthConsumer;
private OAuthProvider mHttpOauthprovider;
private String mConsumerKey;
private String mSecretKey;
private ProgressDialog mProgressDlg;
private TwDialogListener mListener;
private Activity context;
public static final String OAUTH_CALLBACK_SCHEME = "x-oauthflow-twitter";
public static final String OAUTH_CALLBACK_HOST = "callback";
public static final String CALLBACK_URL = OAUTH_CALLBACK_SCHEME + "://" + OAUTH_CALLBACK_HOST;
private static final String TWITTER_ACCESS_TOKEN_URL = "https://api.twitter.com/oauth/access_token";
private static final String TWITTER_AUTHORZE_URL = "https://api.twitter.com/oauth/authorize";
private static final String TWITTER_REQUEST_URL = "https://api.twitter.com/oauth/request_token";
public static final String MESSAGE = "Hello Everyone....";
public TwitterApp(Activity context, String consumerKey, String secretKey) {
this.context = context;
mTwitter = new TwitterFactory().getInstance();
mSession = new TwitterSession(context);
mProgressDlg = new ProgressDialog(context);
mProgressDlg.requestWindowFeature(Window.FEATURE_NO_TITLE);
mConsumerKey = consumerKey;
mSecretKey = secretKey;
mHttpOauthConsumer = new CommonsHttpOAuthConsumer(mConsumerKey,
mSecretKey);
String request_url=TWITTER_REQUEST_URL;
String access_token_url=TWITTER_ACCESS_TOKEN_URL;
String authorize_url=TWITTER_AUTHORZE_URL;
mHttpOauthprovider = new DefaultOAuthProvider(
request_url,
access_token_url,
authorize_url);
mAccessToken = mSession.getAccessToken();
configureToken();
}
public void setListener(TwDialogListener listener) {
mListener = listener;
}
@SuppressWarnings("deprecation")
private void configureToken() {
if (mAccessToken != null) {
mTwitter.setOAuthConsumer(mConsumerKey, mSecretKey);
mTwitter.setOAuthAccessToken(mAccessToken);
}
}
public boolean hasAccessToken() {
return (mAccessToken == null) ? false : true;
}
public void resetAccessToken() {
if (mAccessToken != null) {
mSession.resetAccessToken();
mAccessToken = null;
}
}
public String getUsername() {
return mSession.getUsername();
}
public void updateStatus(String status) throws Exception {
try {
mTwitter.updateStatus(status);
} catch (TwitterException e) {
throw e;
}
}
public void authorize() {
mProgressDlg.setMessage("Initializing ...");
mProgressDlg.show();
new Thread() {
@Override
public void run() {
String authUrl = "";
int what = 1;
try {
authUrl = mHttpOauthprovider.retrieveRequestToken(
mHttpOauthConsumer, CALLBACK_URL);
what = 0;
} catch (Exception e) {
e.printStackTrace();
}
mHandler.sendMessage(mHandler
.obtainMessage(what, 1, 0, authUrl));
}
}.start();
}
public void processToken(String callbackUrl) {
mProgressDlg.setMessage("Finalizing ...");
mProgressDlg.show();
final String verifier = getVerifier(callbackUrl);
new Thread() {
@Override
public void run() {
int what = 1;
try {
mHttpOauthprovider.retrieveAccessToken(mHttpOauthConsumer,
verifier);
mAccessToken = new AccessToken(
mHttpOauthConsumer.getToken(),
mHttpOauthConsumer.getTokenSecret());
configureToken();
User user = mTwitter.verifyCredentials();
mSession.storeAccessToken(mAccessToken, user.getName());
what = 0;
} catch (Exception e) {
e.printStackTrace();
}
mHandler.sendMessage(mHandler.obtainMessage(what, 2, 0));
}
}.start();
}
private String getVerifier(String callbackUrl) {
String verifier = "";
try {
callbackUrl = callbackUrl.replace("twitterapp", "http");
URL url = new URL(callbackUrl);
String query = url.getQuery();
String array[] = query.split("&");
for (String parameter : array) {
String v[] = parameter.split("=");
if (URLDecoder.decode(v[0]).equals(
oauth.signpost.OAuth.OAUTH_VERIFIER)) {
verifier = URLDecoder.decode(v[1]);
break;
}
}
} catch (MalformedURLException e) {
e.printStackTrace();
}
return verifier;
}
private void showLoginDialog(String url) {
final TwDialogListener listener = new TwDialogListener() {
public void onComplete(String value) {
processToken(value);
}
public void onError(String value) {
mListener.onError("Failed opening authorization page");
}
};
new TwitterDialog(context, url, listener).show();
}
private Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
mProgressDlg.dismiss();
if (msg.what == 1) {
if (msg.arg1 == 1)
mListener.onError("Error getting request token");
else
mListener.onError("Error getting access token");
} else {
if (msg.arg1 == 1)
showLoginDialog((String) msg.obj);
else
mListener.onComplete("");
}
}
};
public interface TwDialogListener {
public void onComplete(String value);
public void onError(String value);
}
}
我已经实现了在这个 stackoverflow 问题上被接受的相同代码： 为什么 TwitterApp 会给出 VerifyError？
我使用最新的 twitter4j-core-3.0.5.jar 和项目我的构建目标是 API 8。
包括的罐子是：-
1. apache-mime4j-core-0.7.2.jar
2. commons-io-2.4.jar
3. httpmime-4.2.5.jar
4. signpost-commonshttp4-1.2.1.2.jar
5. signpost-core-1.2.1.2.jar
6. signpost-jetty6-1.2.1.1.jar
7. twitpic4j.jar
8. twitter4j-core-3.0.5.jar
请帮我找出问题所在。谢谢