Twitter Implementation with Scribe

package com.garethpaul.teethy;


import org.json.JSONException;
import org.json.JSONObject;
import org.scribe.builder.ServiceBuilder;
import org.scribe.builder.api.TwitterApi;
import org.scribe.model.OAuthRequest;
import org.scribe.model.Response;
import org.scribe.model.Token;
import org.scribe.model.Verb;
import org.scribe.model.Verifier;
import org.scribe.oauth.OAuthService;

import android.os.StrictMode;
import android.app.Activity;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.TextView;

/**
 *Demonstrates how to use the scribe library to login with twitter.
 *
 */
public class MainActivity extends Activity {

    final static String APIKEY = Null;
    final static String APISECRET = Null;
    final static String CALLBACK = "oauth://twitter";

    @Override
    public void onCreate(Bundle savedInstanceState) {
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        final TextView textView = (TextView)findViewById(R.id.textview);
        final  WebView webview = (WebView) findViewById(R.id.webview);

        if(APIKEY == null || APISECRET == null){
            textView.setText("You must enter your own APIKEY and SECRET to use this demo.  dev.twitter.com");
            webview.setVisibility(View.GONE);
            return;
        }

        MainActivity.this.runOnUiThread(new Runnable() {
            public void run() {

                //
                //
                //set up service and get request token as seen on scribe website
                //https://github.com/fernandezpablo85/scribe-java/wiki/Getting-Started
                final OAuthService s = new ServiceBuilder()
                        .provider(TwitterApi.SSL.class)
                        .apiKey(APIKEY)
                        .apiSecret(APISECRET)
                        .callback(CALLBACK)
                        .build();

                final Token requestToken = s.getRequestToken();
                final String authURL = s.getAuthorizationUrl(requestToken);

                //attach WebViewClient to intercept the callback url
                webview.setWebViewClient(new WebViewClient(){
                    @Override
                    public boolean shouldOverrideUrlLoading(WebView view, String url) {

                        //check for our custom callback protocol otherwise use default behavior
                        if(url.startsWith("oauth")){
                            //authorization complete hide webview for now.
                            webview.setVisibility(View.GONE);

                            Uri uri = Uri.parse(url);
                            String verifier = uri.getQueryParameter("oauth_verifier");
                            Verifier v = new Verifier(verifier);

                            //save this token for practical use.
                            Token accessToken = s.getAccessToken(requestToken, v);

                            //host twitter detected from callback oauth://twitter
                            if(uri.getHost().equals("twitter")){
                                OAuthRequest req = new OAuthRequest(Verb.GET, "https://api.twitter.com/1.1/search/tweets.json?q=manutd");
                                s.signRequest(accessToken, req);
                                Response response = req.send();
                                try {
                                    JSONObject json = new JSONObject(response.getBody());
                                    textView.setText(json.toString(3));
                                } catch (JSONException e) {
                                    e.printStackTrace();
                                }
                            }

                            return true;
                        }


                        return super.shouldOverrideUrlLoading(view, url);
                    }
                });


                //send user to authorization page
                webview.loadUrl(authURL);



            }
        });

    }
}