首先，我至少两次查看了本网站上有关该主题的每个问题，但我找不到任何内容。
我已经使用了一些教程来创建一个只提供OAuth登录的Twitter4J的简单Twitter客户端。代码将用户带到浏览器，接受OAuth，然后浏览器将我返回到我的应用程序。
但是，我无法使用方法getOAuthAccessToken()中的onNewIntent(Intent intent)方法获取OAuth访问令牌，并且日志显示错误只是Twitter Login Error > null。
我尝试使用onResume，onNewIntent更改getOAuthAccessToken()的位置，我已将Activity设置为singleInstance和singleTask，并且我已正确设置日期和时间。如果有人可以帮助我从浏览器返回时从Twitter获取访问令牌，那将是非常好的，谢谢！这是我的代码：
public class mAppActivity extends Activity {
// constants
static final String TWITTER_CONSUMER_KEY = "";
static final String TWITTER_CONSUMER_SECRET =
"";
// preference constants
static final String PREFERENCE_NAME = "twitter_oauth";
static final String PREF_KEY_OAUTH_TOKEN = "oauth_token";
static final String PREF_KEY_OAUTH_SECRET = "oauth_token_secret";
static final String PREF_KEY_TWITTER_LOGIN = "isTwitterLoggedIn";
static final String TWITTER_CALLBACK_URL = "callback://x-oauthflow-twitter";
// Twitter OAuth URLS
static final String URL_TWITTER_AUTH = "auth_url";
static final String URL_TWITTER_OAUTH_VERIFIER = "oauth_verifier";
static final String URL_TWITTER_OAUTH_TOKEN = "oauth_token";
// Buttons
Button btnLoginTwitter;
Button btnUpdateStatus;
Button btnLogoutTwitter;
// EditText for update
EditText txtUpdate;
// lbl update
TextView lblUpdate;
TextView lblUserName;
// ProgressDialog
ProgressDialog pdialog;
// Twitter
private static Twitter twitter;
private static RequestToken requestToken;
private AccessToken accessToken;
// SharedPreferences
private static SharedPreferences mSharedPreferences;
// Internet ConnectionDetector
private ConnectionDetector cd;
// AlertDialogManager
AlertDialogManager alert = new AlertDialogManager();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_app_m);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
cd = new ConnectionDetector(getApplicationContext());
// check if connected to Internet
if (!cd.isConnectingToInternet()) {
// show error message
alert.showAlertDialog(mAppActivity.this,
"Internet Connection Error",
"Please connect to working Internet connection",
false);
// stop code by returning
return;
}
// check if Twitter keys are set
if (TWITTER_CONSUMER_KEY.trim().length() == 0 ||
TWITTER_CONSUMER_SECRET.trim().length() == 0) {
// show error message
alert.showAlertDialog(mAppActivity.this,
"Twitter OAuth Tokens Error",
"Please set your Twitter OAuth tokens first!",
false);
// stop code by returning
return;
}
// All UI elements
btnLoginTwitter = (Button) findViewById(R.id.btnLoginTwitter);
btnUpdateStatus = (Button) findViewById(R.id.btnUpdateStatus);
btnLogoutTwitter = (Button) findViewById(R.id.btnLogoutTwitter);
txtUpdate = (EditText) findViewById(R.id.txtUpdateStatus);
lblUpdate = (TextView) findViewById(R.id.lblUpdate);
lblUserName = (TextView) findViewById(R.id.lblUserName);
// SharedPreferences
mSharedPreferences = getApplicationContext()
.getSharedPreferences("MyPrefs", 0);
/**
* Twitter login button click event
* will call loginToTwitter() function
*/
btnLoginTwitter.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// Call Twitter login function
loginToTwitter();
}
});
/**
* Twitter logout button click
*/
btnLogoutTwitter.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// call Twitter logout function
logoutFromTwitter();
}
});
}
/**
* Function to log in to Twitter
*/
private void loginToTwitter() {
// Check if already logged in
if (!isTwitterLoggedInAlready()) {
ConfigurationBuilder builder = new ConfigurationBuilder();
builder.setUseSSL(true);
builder.setOAuthConsumerKey(TWITTER_CONSUMER_KEY);
builder.setOAuthConsumerSecret(TWITTER_CONSUMER_SECRET);
Configuration configuration = builder.build();
TwitterFactory factory = new TwitterFactory(configuration);
twitter = factory.getInstance();
Thread thread = new Thread(new Runnable(){
@Override
public void run() {
try {
requestToken = twitter
.getOAuthRequestToken(TWITTER_CALLBACK_URL);
mAppActivity.this.startActivity(new Intent(Intent.ACTION_VIEW, Uri
.parse(requestToken.getAuthenticationURL())));
} catch (Exception e) {
e.printStackTrace();
}
}
});
thread.start();
} else {
// user is already logged in into Twitter
Toast.makeText(getApplicationContext(),
"Already Logged into Twitter", Toast.LENGTH_LONG).show();
}
}
/**
* Checks if user is already logged in using Twitter login
* fetched from Shared Preferences
*/
private boolean isTwitterLoggedInAlready() {
// return Twitter login status from SharedPreferences
return mSharedPreferences.getBoolean(PREF_KEY_TWITTER_LOGIN, false);
}
protected void onNewIntent(Intent intent) {
super.onNewIntent(intent);
/**
* This if condition is tested user is
* redirected from Twitter page. Parse the URI to OAuth Verifier
*/
Uri uri = intent.getData();
Toast.makeText(getApplicationContext(),
uri.toString(), Toast.LENGTH_LONG).show();
if (uri != null && uri.toString().startsWith(TWITTER_CALLBACK_URL)) {
// OAuth verifier
final String verifier = uri
.getQueryParameter(URL_TWITTER_OAUTH_VERIFIER);
try {
// get the access token
mAppActivity.this.accessToken =
twitter.getOAuthAccessToken(
requestToken);
// SharedPreferences
Editor e = mSharedPreferences.edit();
// after getting access token, access token secret
// store them in application preferences
e.putString(PREF_KEY_OAUTH_TOKEN, accessToken.getToken());
e.putString(PREF_KEY_OAUTH_SECRET,
accessToken.getTokenSecret());
// store login status - true
e.putBoolean(PREF_KEY_TWITTER_LOGIN, true);
e.commit(); // save changes
Log.e("Twitter OAuth Token", "> " + accessToken.getToken());
// hide login button
btnLoginTwitter.setVisibility(View.GONE);
// show update Twitter
lblUpdate.setVisibility(View.VISIBLE);
txtUpdate.setVisibility(View.VISIBLE);
btnUpdateStatus.setVisibility(View.VISIBLE);
btnLogoutTwitter.setVisibility(View.VISIBLE);
// get user details from Twitter
// for now only username is being gotten
long userID = accessToken.getUserId();
User user = twitter.showUser(userID);
String username = user.getName();
// display in xml ui
lblUserName.setText(Html.fromHtml("<b>Welcome " + username + "</b>"));
} catch (Exception e) {
// catch log for login errors
Log.e("Twitter Login Error", "> " + e.getMessage());
}
}
}
}
清单：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.messagingapplication"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<!-- Permission - Internet Connect -->
<uses-permission android:name="android.permission.INTERNET" />
<!-- Network State Permissions -->
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.messagingapplication.mAppActivity"
android:label="@string/app_name"
android:launchMode="singleTask">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data
android:host="x-oauthflow-twitter"
android:scheme="callback" />
</intent-filter>
</activity>
<activity
android:name="com.example.messagingapplication.MAppMainActivity"
android:label="@string/title_activity_mapp_main" >
</activity>
<activity
android:name="com.example.messagingapplication.Teest"
android:label="@string/title_activity_teest" >
</activity>
</application>
</manifest>
答案 0 :(得分：0)
您需要传入OAuth验证程序字符串，该字符串已从查询参数中检索但未正确传递到getOAuthAccessToken方法：
// OAuth verifier
final String verifier = uri
.getQueryParameter(URL_TWITTER_OAUTH_VERIFIER);
try {
// get the access token
mAppActivity.this.accessToken =
twitter.getOAuthAccessToken(
requestToken,
verifier); // You forgot to pass this in.
答案 1 :(得分：0)
我解决了同样的问题。它阻止了你的ui。你只需在asynctask中尝试一下。你只需在asynctask中调用该代码。
requestToken = twitter.getOAuthRequestToken（TWITTER_CALLBACK_URL）; 或
像这样，class TwitterLogin extends AsyncTask<String, String, String>
{
@Override
protected String doInBackground(String... params)
{
// TODO Auto-generated method stub
Uri uri = getIntent().getData();
if (uri != null && uri.toString().startsWith(TWITTER_CALLBACK_URL))
{
String verifier = uri.getQueryParameter(URL_TWITTER_OAUTH_VERIFIER);
try
{
AccessToken accessToken = twitter.getOAuthAccessToken(requestToken, verifier);
// Shared Preferences
Editor e = loginPrefs.edit();
e.putString(PREF_KEY_OAUTH_TOKEN, accessToken.getToken());
e.putString(PREF_KEY_OAUTH_SECRET,accessToken.getTokenSecret());
e.putBoolean(PREF_KEY_TWITTER_LOGIN, true);
e.commit();
Log.e("Twitter OAuth Token", "> " + accessToken.getToken());
long userID = accessToken.getUserId();
User user = twitter.showUser(userID);
String username = user.getName();
Log.e("UserID: ", "userID: "+userID+""+username);
Log.v("Welcome:","Thanks:"+Html.fromHtml("<b>Welcome " + username + "</b>"));
}
catch (Exception e)
{
Log.e("Twitter Login Error", "> " + e.getMessage());
}
}
return null;
}
@Override
protected void onPostExecute(String result)
{
// TODO Auto-generated method stub
super.onPostExecute(result);
}
@Override
protected void onPreExecute()
{
// TODO Auto-generated method stub
super.onPreExecute();
}
}
答案 2 :(得分：0)
问题我认为你在移动设备中运行应用程序而不是模拟器，你需要添加线程来获取来自Twitter CallBack的响应