Android Open Source - android-foursquare-client Access Token Activity

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License

The source code is released under:

Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions...

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Java Source Code

package com.foursquare.api.oauth2;
/*  www  . j  a v  a2 s.  c  om*/
import java.io.IOException;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.util.Log;
import android.view.View;
import android.webkit.WebView;
import android.webkit.WebViewClient;

import com.foursquare.api.map.CheckinMap;
import com.foursquare.api.oauth2.store.CredentialStore;
import com.foursquare.api.oauth2.store.SharedPreferencesCredentialStore;
import com.google.api.client.auth.oauth2.draft10.AccessTokenRequest.AuthorizationCodeGrant;
import com.google.api.client.auth.oauth2.draft10.AccessTokenResponse;
import com.google.api.client.auth.oauth2.draft10.AuthorizationRequestUrl;
import com.google.api.client.http.HttpResponseException;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.jackson.JacksonFactory;

import com.example.androidfoursquareclient.Example;

@SuppressLint("SetJavaScriptEnabled")
public class AccessTokenActivity extends Activity {

  final String TAG = getClass().getName();
  private SharedPreferences sharedPreferences;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Log.i(TAG, "Retrienving request token.");
    this.sharedPreferences = PreferenceManager
        .getDefaultSharedPreferences(this);
  }

  @Override
  protected void onResume() {
    super.onResume();
    
    WebView webview = new WebView(this);
    webview.getSettings().setJavaScriptEnabled(true);
    webview.setVisibility(View.VISIBLE);
    setContentView(webview);

    webview.setWebViewClient(new WebViewClient() {
      @Override
      public void onPageStarted(WebView view, String url, Bitmap bitmap) {
        System.out.println("onPageStarted : " + url);
      }

      @Override
      public void onPageFinished(WebView view, String url) {
        if (url.startsWith(Credentials.REDIRECT_URI)) {
          try {
            if (url.indexOf("code=") != -1) {
              final String code = extractCodeFromUrl(url);

              AuthorizationCodeGrant request = new AuthorizationCodeGrant(
                  new NetHttpTransport(),
                  new JacksonFactory(),
                  Credentials.ACCESS_TOKEN_URL,
                  Credentials.CLIENT_ID,
                  Credentials.CLIENT_SECRET, code,
                  Credentials.REDIRECT_URI);

              AccessTokenResponse accessTokenResponse = request.execute();

              CredentialStore credentialStore = new SharedPreferencesCredentialStore(sharedPreferences);
              credentialStore.write(accessTokenResponse);
              
              view.setVisibility(View.INVISIBLE);
              startActivity(new Intent(AccessTokenActivity.this,CheckinMap.class));
            } else if (url.indexOf("error=") != -1) {
              view.setVisibility(View.INVISIBLE);
              new SharedPreferencesCredentialStore(sharedPreferences).clearCredentials();
              startActivity(new Intent(AccessTokenActivity.this, Example.class));
            }
          } catch (HttpResponseException e) {
            try {
              System.out.println("Error occured " + e.response.parseAsString());
            } catch (IOException e1) {
              e1.printStackTrace();
            }
          } catch (Exception e) {
            e.printStackTrace();
          }
        }
        System.out.println("onPageFinished : " + url);
      }

      private String extractCodeFromUrl(String url) {
        return url.substring(Credentials.REDIRECT_URI.length() + 6,
            url.length());
      }
    });

    final AuthorizationRequestUrl authorizationRequestUrl = new AuthorizationRequestUrl(Credentials.AUTHORIZATION_URL);
    authorizationRequestUrl.clientId   = Credentials.CLIENT_ID;
    authorizationRequestUrl.redirectUri = Credentials.REDIRECT_URI;
    webview.loadUrl(authorizationRequestUrl.build());
  }
}

Java Source Code List