Android: Login with Twitter using Twitter4J

Question

What I Have Tried:

I already have registered an app in twitter and got Consumer Key and Secret.Even I got various codes to login with twitter.These

Answer 1

First, you need to authenticate properly:

try{
        consumer = new CommonsHttpOAuthConsumer(CONSUMER_KEY, CONSUMER_SECRET);
        provider = new DefaultOAuthProvider("http://twitter.com/oauth/request_token", "http://twitter.com/oauth/access_token", "http://twitter.com/oauth/authorize");
        String authUrl = provider.retrieveRequestToken(consumer, CALLBACK_URL);

        startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(authUrl)));

    }catch(Exception e){
        Log.e(TAG,e+"");
    }

The necessities for CALLBACK_URL need to be set in the Manifest file (refer to Frankenstein's answer). The above code starts an intent to perform the authorization at Twitter's server. The callback information is necessary so the intent knows what app to return to after the authorization procedure.

Then we need to handle the return to the app after authenticating at Twitter:

    @Override
public void onResume(){
    super.onResume();

    if (this.getIntent()!=null && this.getIntent().getData()!=null){
        Uri uri = this.getIntent().getData();

        //handle returning from authenticating the user
        if (uri != null && uri.toString().startsWith(CALLBACK_URL)) {
            String verifier = uri.getQueryParameter(oauth.signpost.OAuth.OAUTH_VERIFIER);
            String token = uri.getQueryParameter(oauth.signpost.OAuth.OAUTH_TOKEN);
            try {  
                Twitter t = new TwitterFactory().getInstance();
                t.setOAuthConsumer(CONSUMER_KEY, CONSUMER_SECRET);

                // Get Access Token and store it  
                rToken = new RequestToken(token, CONSUMER_SECRET);
                AccessToken aToken = t.getOAuthAccessToken(rToken);
                storeAccessToken(aToken);  

                //send to checkLoginState again since we have authorization now!
                checkLoginState(); 

           } catch (Exception e) {  
               Log.e(TAG, e+"");  
           }  
          }  
         }
}//end onResume

This code grabs the data from the returning intent, among which is the info to grab the authorization token. "storeAccessToken(aToken)" is a short method i wrote that stores the token in the app's preferences so that we don't need to reauthorize every time the app is opened.

Now that we have an authorization token, we can use it authorize a Twitter instance:

twitter = new TwitterFactory().getInstance();
        twitter.setOAuthConsumer(CONSUMER_KEY, CONSUMER_SECRET);
        twitter.setOAuthAccessToken(aToken);

The above variable "twitter" is now authorized and can do its thing.

Answer 2

you should be writing callback as this in manifest to your activity

<activity android:name="com.apps.twitter.PrepareRequestTokenActivity"
            android:launchMode="singleTask" android:theme="@android:style/Theme.Translucent.NoTitleBar"
            android:screenOrientation="portrait">
            <intent-filter>
                <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:scheme="x-oauthflow-twitter" android:host="callback" />
            </intent-filter>
</activity>

And in the Constant File

final public static String  CALLBACK_SCHEME = "x-oauthflow-twitter";    
final public static String  CALLBACK_URL = CALLBACK_SCHEME + "://callback";

Answer 3

It's because your app is registered as a desktop client. To overwrite callback URL, your app need to be registered as a browser client.

Try configuring a dummy callback URL (http://example.com/ or whatever you want) at https://dev.twitter.com/apps/[appid]/settings > Callback URL and your app will be recognized as a browser client.

Then try @Frankenstein or @jamn224 code.