twitter oauth-使用jTwitter为android获取访问令牌

Question

我正在使用jTwitter为android开发我的应用程序。我可以将用户重定向到授权页面，在那里他输入凭据来授权应用程序。然后调用回调函数。在回调函数中，我无法获取访问令牌。这给我带来了例外。请帮忙。

正在获取"与服务提供商通信失败"异常。更新：我正在获取令牌，但仍在获取异常。这是代码：

   Twitter twitter = null;
private EditText tweetTxt = null;
private Button postBtn = null;
private OAuthSignpostClient client = null;
private String CALLBACK_URI = "myapp://twitt";
private String authUrl = null;
private ProgressDialog postDialog = null;
String[] accessTokenandSecret=null;
String consumerKey="";
String consumerSecret="";
String verifier;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    postBtn=(Button)findViewById(R.id.button1);


    postBtn.setOnClickListener(new OnClickListener() {
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
            new MyTask().execute();
        }
    });

    Button postTweet = (Button)findViewById(R.id.button2);
    postTweet.setOnClickListener(new OnClickListener() {
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
            new PostTweet().execute();
        }
    });
}

private class PostTweet extends AsyncTask<Void, Void, Void> {

    protected void onPreExecute() {
        Toast.makeText(getApplicationContext(), "pre execute 2", Toast.LENGTH_LONG).show();
        if(accessTokenandSecret==null)
        {
            Toast.makeText(getApplicationContext(), "IT IS NULL", Toast.LENGTH_LONG).show();
        }
    }
    @Override
    protected Void doInBackground(Void... arg0) {
        client=new OAuthSignpostClient(consumerKey, consumerSecret, accessTokenandSecret[0], accessTokenandSecret[1]);
        Twitter jtwit = new Twitter(null, client);
        jtwit.setStatus("test post from my app");

        return null;
    }
    @Override
    protected void onPostExecute(Void result) {
        Toast.makeText(getApplicationContext(), "Tweet is post Successfully!!", Toast.LENGTH_SHORT).show();
    }

}



private class MyTask extends AsyncTask<Void, Void, Void> {

    protected void onPreExecute() {
        Toast.makeText(getApplicationContext(), "pre execute", Toast.LENGTH_LONG).show();
    }
    @Override
    protected Void doInBackground(Void... arg0) {
        client = new OAuthSignpostClient("QvkiReKCHNKcHn3pGrEzQ" ,"EV9vdMRfuT2AQlSNPJW4LhDAyOe0z1mAZYqHJNkPH7g", CALLBACK_URI);
        authUrl = client.authorizeUrl().toString();
        Intent intent=new Intent(Intent.ACTION_VIEW, Uri.parse(authUrl));
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        getApplicationContext().startActivity(intent);
        return null;
    }
    @Override
    protected void onPostExecute(Void result) {
        Toast.makeText(getApplicationContext(), "post execute", Toast.LENGTH_LONG).show();
    }

}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.activity_main, menu);
    return true;
}
protected void onNewIntent(Intent intent) {
    super.onNewIntent(intent);
    Uri uri = intent.getData();
    //Check if you got NewIntent event due to Twitter Call back only
    if (uri != null && uri.toString().startsWith(CALLBACK_URI))
    {
    try
    {
    verifier = uri.getQueryParameter(OAuth.OAUTH_VERIFIER);
    Toast.makeText(getApplicationContext(), "inside verfier", Toast.LENGTH_LONG).show();
    client.setAuthorizationCode(verifier);
    accessTokenandSecret=client.getAccessToken();
    //if(accessTokenandSecret==null)
        //{
        //Toast.makeText(getApplicationContext(), "it is null you fool", Toast.LENGTH_LONG).show();
    //  }

    //client=new OAuthSignpostClient(consumerKey, consumerSecret, accessTokenandSecret);
    }
    catch(Exception e){
    Log.d("exception", " "+e.getMessage());
    }
    }}

日志cat错误：

         02-17 15:13:46.599: E/AndroidRuntime(12915): FATAL EXCEPTION: AsyncTask #4
         02-17 15:13:46.599: E/AndroidRuntime(12915): java.lang.RuntimeException: An error occured while executing doInBackground()
         02-17 15:13:46.599: E/AndroidRuntime(12915):   at android.os.AsyncTask$3.done(AsyncTask.java:299)
        02-17 15:13:46.599: E/AndroidRuntime(12915):    at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
        02-17 15:13:46.599: E/AndroidRuntime(12915):    at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
        02-17 15:13:46.599: E/AndroidRuntime(12915):    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
        02-17 15:13:46.599: E/AndroidRuntime(12915):    at java.util.concurrent.FutureTask.run(FutureTask.java:137)
        02-17 15:13:46.599: E/AndroidRuntime(12915):    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
        02-17 15:13:46.599: E/AndroidRuntime(12915):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
        02-17 15:13:46.599: E/AndroidRuntime(12915):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
        02-17 15:13:46.599: E/AndroidRuntime(12915):    at java.lang.Thread.run(Thread.java:856)
        02-17 15:13:46.599: E/AndroidRuntime(12915): Caused by: winterwell.jtwitter.TwitterException: oauth.signpost.exception.OAuthCommunicationException: Communication with the service provider failed: http://twitter.com/oauth/access_token
        02-17 15:13:46.599: E/AndroidRuntime(12915):    at winterwell.jtwitter.OAuthSignpostClient.setAuthorizationCode(OAuthSignpostClient.java:431)
        02-17 15:13:46.599: E/AndroidRuntime(12915):    at com.example.retrieve.contacts.twitter.MainActivity$GetAccessTok.doInBackground(MainActivity.java:114)

Answer 1

你能试着从下载最新版本的JTwitter吗http://winterwell.com/software/jtwitter.php?AndroidTwitterLogin中有一个错误，没有使用回调url。现在已经修补了。

顺便说一句，在网上发布应用程序的oauth详细信息时要小心。一旦你的应用程序正常工作，我建议你去dev.twitter.com并生成新的详细信息。