使用twitter4j库的Twitter Android登录错误 _Android

但使书种多，会有岁稔时。这篇文章主要讲述使用twitter4j库的Twitter Android登录错误相关的知识，希望能为你提供帮助。
我正在尝试使用Twitter4j库登录我的Twitter应用程序。但每当我点击我的登录按钮时，我的应用程序就会崩溃。
这是我班上的方法 -

btnLoginTwitter.setOnClickListener(new View.OnClickListener() {@Override public void onClick(View arg0) { // Call login twitter function loginToTwitter(); } }); /** * Function to login twitter * */ private void loginToTwitter() { // Check if already logged in if (!isTwitterLoggedInAlready()) { ConfigurationBuilder builder = new ConfigurationBuilder(); builder.setOAuthConsumerKey(TWITTER_CONSUMER_KEY); builder.setOAuthConsumerSecret(TWITTER_CONSUMER_SECRET); Configuration configuration = builder.build(); TwitterFactory factory = new TwitterFactory(configuration); twitter = factory.getInstance(); try { requestToken = twitter .getOAuthRequestToken(TWITTER_CALLBACK_URL); this.startActivity(new Intent(Intent.ACTION_VIEW, Uri .parse(requestToken.getAuthenticationURL()))); } catch (TwitterException e) { e.printStackTrace(); } } else { // user already logged into twitter Toast.makeText(getApplicationContext(), "Already Logged into twitter", Toast.LENGTH_LONG).show(); } }

当我按下登录按钮时，它显示以下LogCat-

07-18 00:55:00.726: E/androidRuntime(1185): FATAL EXCEPTION: main 07-18 00:55:00.726: E/AndroidRuntime(1185): android.os.NetworkOnMainThreadException 07-18 00:55:00.726: E/AndroidRuntime(1185):at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1133) 07-18 00:55:00.726: E/AndroidRuntime(1185):at java.net.InetAddress.lookupHostByName(InetAddress.java:385) 07-18 00:55:00.726: E/AndroidRuntime(1185):at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236) 07-18 00:55:00.726: E/AndroidRuntime(1185):at java.net.InetAddress.getAllByName(InetAddress.java:214) 07-18 00:55:00.726: E/AndroidRuntime(1185):at libcore.net.http.HttpConnection.< init> (HttpConnection.java:70) 07-18 00:55:00.726: E/AndroidRuntime(1185):at libcore.net.http.HttpConnection.< init> (HttpConnection.java:50) 07-18 00:55:00.726: E/AndroidRuntime(1185):at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:340) 07-18 00:55:00.726: E/AndroidRuntime(1185):at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:87) 07-18 00:55:00.726: E/AndroidRuntime(1185):at libcore.net.http.HttpConnection.connect(HttpConnection.java:128) 07-18 00:55:00.726: E/AndroidRuntime(1185):at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:316) 07-18 00:55:00.726: E/AndroidRuntime(1185):at libcore.net.http.HttpEngine.connect(HttpEngine.java:311) 07-18 00:55:00.726: E/AndroidRuntime(1185):at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:290) 07-18 00:55:00.726: E/AndroidRuntime(1185):at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:240) 07-18 00:55:00.726: E/AndroidRuntime(1185):at libcore.net.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:81) 07-18 00:55:00.726: E/AndroidRuntime(1185):at libcore.net.http.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:197) 07-18 00:55:00.726: E/AndroidRuntime(1185):at twitter4j.internal.http.HttpClientImpl.request(HttpClientImpl.java:158) 07-18 00:55:00.726: E/AndroidRuntime(1185):at twitter4j.internal.http.HttpClientWrapper.request(HttpClientWrapper.java:65) 07-18 00:55:00.726: E/AndroidRuntime(1185):at twitter4j.internal.http.HttpClientWrapper.post(HttpClientWrapper.java:102) 07-18 00:55:00.726: E/AndroidRuntime(1185):at twitter4j.auth.OAuthAuthorization.getOAuthRequestToken(OAuthAuthorization.java:121) 07-18 00:55:00.726: E/AndroidRuntime(1185):at twitter4j.auth.OAuthAuthorization.getOAuthRequestToken(OAuthAuthorization.java:104) 07-18 00:55:00.726: E/AndroidRuntime(1185):at twitter4j.TwitterBaseImpl.getOAuthRequestToken(TwitterBaseImpl.java:276) 07-18 00:55:00.726: E/AndroidRuntime(1185):at com.androidhive.twitterconnect.MainActivity.loginToTwitter(MainActivity.java:236) 07-18 00:55:00.726: E/AndroidRuntime(1185):at com.androidhive.twitterconnect.MainActivity.access$1(MainActivity.java:223) 07-18 00:55:00.726: E/AndroidRuntime(1185):at com.androidhive.twitterconnect.MainActivity$1.onClick(MainActivity.java:123) 07-18 00:55:00.726: E/AndroidRuntime(1185):at android.view.View.performClick(View.java:4240) 07-18 00:55:00.726: E/AndroidRuntime(1185):at android.view.View$PerformClick.run(View.java:17721) 07-18 00:55:00.726: E/AndroidRuntime(1185):at android.os.Handler.handleCallback(Handler.java:730) 07-18 00:55:00.726: E/AndroidRuntime(1185):at android.os.Handler.dispatchMessage(Handler.java:92) 07-18 00:55:00.726: E/AndroidRuntime(1185):at android.os.Looper.loop(Looper.java:137) 07-18 00:55:00.726: E/AndroidRuntime(1185):at android.app.ActivityThread.main(ActivityThread.java:5103) 07-18 00:55:00.726: E/AndroidRuntime(1185):at java.lang.reflect.Method.invokeNative(Native Method) 07-18 00:55:00.726: E/AndroidRuntime(1185):at java.lang.reflect.Method.invoke(Method.java:525) 07-18 00:55:00.726: E/AndroidRuntime(1185):at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737) 07-18 00:55:00.726: E/AndroidRuntime(1185):at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 07-18 00:55:00.726: E/AndroidRuntime(1185):at dalvik.system.NativeStart.main(Native Method)

答案'android.os.NetworkOnMainThreadException'意味着你正在执行网络相关的功能，如Http post，get等等你的主GUI线程..所有你要做的就是把这个东西放在AsyncTask
这样做：

private void loginToTwitter() { new AsyncTask< Void, Void, Boolean> () { @Override protected void onPreExecute() { super.onPreExecute(); }@Override protected Boolean doInBackground(Void... params) { if (!isTwitterLoggedInAlready()) { ConfigurationBuilder builder = new ConfigurationBuilder(); builder.setOAuthConsumerKey(TWITTER_CONSUMER_KEY); builder.setOAuthConsumerSecret(TWITTER_CONSUMER_SECRET); Configuration configuration = builder.build(); TwitterFactory factory = new TwitterFactory(configuration); twitter = factory.getInstance(); try { requestToken = twitter .getOAuthRequestToken(TWITTER_CALLBACK_URL); return true; } catch (TwitterException e) { e.printStackTrace(); } } else { return false; } }@Override protected void onPostExecute(Boolean result) { super.onPostExecute(result); if(result) { this.startActivity(new Intent(Intent.ACTION_VIEW, Uri .parse(requestToken.getAuthenticationURL()))); }else{ Toast.makeText(getApplicationContext(), "Already Logged into twitter", Toast.LENGTH_LONG).show(); } } }.execute(); }

注意：您无法从doInBackgroung()访问GUI线程，您可以从preExecute和postExecute方法访问GUI线程
另一答案您正在应用程序的主线程中执行耗时的任务。这就是为什么它给android.os.NetworkOnMainThreadException错误。
【使用twitter4j库的Twitter Android登录错误】尝试通过实现doInBackground()将代码放在AsyncTask方法中，如下所示：

private class WSCalling extends AsyncTask< Void, Void, Integer> { @Override protected void onPreExecute() { super.onPreExecute(); }@Override protectedInteger doInBackground(Void... params) { if (!isTwitterLoggedInAlready()) { ConfigurationBuilder builder = new ConfigurationBuilder(); builder.setOAuthConsumerKey(TWITTER_CONSUMER_KEY); builder.setOAuthConsumerSecret(TWITTER_CONSUMER_SECRET); Configuration configuration = builder.build(); TwitterFactory factory = new TwitterFactory(configuration); twitter = factory.getInstance(); try { requestToken = twitter .getOAuthRequestToken(TWITTER_CALLBACK_URL); } catch (TwitterException e) { e.printStackTrace(); } } return requestToken; }@Override protected void onPostExecute(Integer args) { if(args != null) { this.startActivity(new Intent(Intent.ACTION_VIEW, Uri .parse(args.getAuthenticationURL()))); }else { // user already logged into twitter Toast.makeText(getApplicationContext(), "Already Logged into twitter", Toast.LENGTH_LONG).show(); } } }