Question

I try to create Twitter client and now I deal with authorization via OAuth protocol. I have created “Sign In” button to come in WebView and load twitter authorization URL, that’s work. However, when the authorization is accepted successfuly and Twitter service redirect me to my callback I receive error web page in WebView. That is to say I am not redirected to my activity, I still stay in WebView. But if try the same way via browser, it`s working. What the problem is that?

Main Activivty:

    public class Twitter extends Activity implements OnClickListener {

    Button bSignIn;
    TextView status;
    private OAuthConsumer consumer;
    private OAuthProvider provider;
    private String url;
    final String TAG = getClass().getName();

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.home);

        bSignIn = (Button) findViewById(R.id.bSignIn);
        status = (TextView) findViewById(R.id.tvStatus);
        bSignIn.setOnClickListener(this);
    }

    public void onClick(View v) {
        new OAuthWebViewProcess().execute();
    }

    public class OAuthWebViewProcess extends AsyncTask<Void, Void, Void> {
        ProgressDialog dialog;

        protected void onPreExecute() {
            dialog = ProgressDialog.show(Twitter.this, null,
                    "Connecting, please wait...");
        }

        protected Void doInBackground(Void... params) {
            try {
            consumer = new CommonsHttpOAuthConsumer(Constants.CONSUMER_KEY,
                    Constants.CONSUMER_SECRET);
            provider = new CommonsHttpOAuthProvider(Constants.REQUEST_URL,
                    Constants.ACCESS_URL, Constants.AUTHORIZE_URL);
            url = provider.retrieveRequestToken(consumer,
                        Constants.OAUTH_CALLBACK_URL);
            } catch (Exception e) {
                Log.e(TAG, "Error during OAUth retrieve request token", e);
            }
            return null;
        }

        protected void onPostExecute(Void result) {
            //Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
            Intent i = new Intent(Twitter.this, TwitterWebView.class);
            i.putExtra("url", Uri.parse(url).toString());
            startActivityForResult(i, 1);
            dialog.dismiss();
        }
    }
}

WebView for Twitter:

 public class TwitterWebView extends Activity {

    String url;
    WebView TwitterWebView;

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.twitterwebview);

        Bundle extras = getIntent().getExtras();
        url = extras.getString("url");

        try {
            TwitterWebView = (WebView) findViewById(R.id.wvTwitter);
            TwitterWebView.setWebViewClient(new TwitterWebViewClient(){
                public boolean shouldOverrideUrlLoading(WebView view, String url) {
                    view.loadUrl(url);
                    return true;
                }
            });
            TwitterWebView.getSettings().setJavaScriptEnabled(true);
            TwitterWebView.getSettings().setDomStorageEnabled(true);
            TwitterWebView.getSettings().setSavePassword(false);
            TwitterWebView.getSettings().setSaveFormData(false);
            TwitterWebView.getSettings().setSupportZoom(false);
            TwitterWebView.loadUrl(url);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

Manifest:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="wixanz.app.twitter"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk android:minSdkVersion="8" />

<uses-permission android:name="android.permission.INTERNET" />

<application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name" >
    <activity
        android:name=".Twitter"
        android:label="@string/app_name"
        android:launchMode="singleInstance" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name=".TwitterWebView"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.VIEW" />

            <category android:name="android.intent.category.BROWSABLE" />
        </intent-filter>
    </activity>
    <activity
        android:name=".TweetList"
        android:label="TweetList"
        android:launchMode="singleInstance" >
        <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="callback"
                android:scheme="twitter" />
        </intent-filter>
    </activity>
</application>

</manifest>

Answer 1

I did the same about others networks like LinkedIn, Foursquare. But instead of use the callback URL, I override the method shouldOverrideUrlLoading (WebView view, String url) in your WebViewClient (which is used to show the login page) to catch the access token and the token secret (if needed) by myself.