进口通过graddle构建文件库：
dependencies {
compile 'net.smartam.leeloo:oauth2-common:0.1'
compile 'net.smartam.leeloo:oauth2-client:0.1'
}
创建聚会认证的类。本课由adrianmaurer编写（https://gist.github.com/adrianmaurer/4673944），谢谢adrianmaurer！
MeetupAuthActivity：从您的主要活动
package pixtas.com.nightout;
import android.content.ContentValues;
import android.content.Context;
import android.net.Uri;
import android.os.AsyncTask;
import android.util.Log;
import android.view.Window;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;
// leeloo oAuth lib https://bitbucket.org/smartproject/oauth-2.0/wiki/Home
import net.smartam.leeloo.client.OAuthClient;
import net.smartam.leeloo.client.URLConnectionClient;
import net.smartam.leeloo.client.request.OAuthClientRequest;
import net.smartam.leeloo.client.response.OAuthAccessTokenResponse;
import net.smartam.leeloo.client.response.OAuthAuthzResponse;
import net.smartam.leeloo.common.exception.OAuthProblemException;
import net.smartam.leeloo.common.exception.OAuthSystemException;
import net.smartam.leeloo.common.message.types.GrantType;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
/**
* Created by tmr_byronMac on 4/24/15.
*/
public class MeetupAuthActivity extends Activity {
private final String TAG = getClass().getName();
// Meetup OAuth Endpoints
public static final String AUTH_URL = "https://secure.meetup.com/oauth2/authorize";
public static final String TOKEN_URL = "https://secure.meetup.com/oauth2/access";
// Consumer
//public static final String REDIRECT_URI_SCHEME = "oauthresponse";
//public static final String REDIRECT_URI_HOST = "com.yourpackage.app";
//public static final String REDIRECT_URI_HOST_APP = "yourapp";
//public static final String REDIRECT_URI = REDIRECT_URI_SCHEME + "://" + REDIRECT_URI_HOST + "/";
public static final String REDIRECT_URI = "NightOut://meetup.com";
public static final String CONSUMER_KEY = "YOUR_KEY";
public static final String CONSUMER_SECRET = "YOUR_SECRET";
private WebView _webview;
private Intent _intent;
private Context _context;
public void onCreate(Bundle savedInstanceState) {
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
super.onCreate(savedInstanceState);
_intent = getIntent();
_context = getApplicationContext();
_webview = new WebView(this);
_webview.setWebViewClient(new MyWebViewClient());
setContentView(_webview);
_webview.getSettings().setJavaScriptEnabled(true);
OAuthClientRequest request = null;
try {
request = OAuthClientRequest.authorizationLocation(
AUTH_URL).setClientId(
CONSUMER_KEY).setRedirectURI(
REDIRECT_URI).buildQueryMessage();
} catch (OAuthSystemException e) {
Log.d(TAG, "OAuth request failed", e);
}
_webview.loadUrl(request.getLocationUri() + "&response_type=code&set_mobile=on");
}
public void finishActivity() {
//do something here before finishing if needed
finish();
}
private class MyWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
Uri uri = Uri.parse(url);
String code = uri.getQueryParameter("code");
String error = uri.getQueryParameter("error");
if (code != null) {
new MeetupRetrieveAccessTokenTask().execute(uri);
// setResult(RESULT_OK, _intent);
// finishActivity();
} else if (error != null) {
setResult(RESULT_CANCELED, _intent);
finishActivity();
}
return false;
}
}
private class MeetupRetrieveAccessTokenTask extends AsyncTask<Uri, Void, Void> {
@Override
protected Void doInBackground(Uri... params) {
Uri uri = params[0];
String code = uri.getQueryParameter("code");
OAuthClientRequest request = null;
try {
request = OAuthClientRequest.tokenLocation(TOKEN_URL)
.setGrantType(GrantType.AUTHORIZATION_CODE).setClientId(
CONSUMER_KEY).setClientSecret(
CONSUMER_SECRET).setRedirectURI(
REDIRECT_URI).setCode(code)
.buildBodyMessage();
OAuthClient oAuthClient = new OAuthClient(new URLConnectionClient());
OAuthAccessTokenResponse response = oAuthClient.accessToken(request);
// do something with these like add them to _intent
// Intent returnIntent = new Intent();
// returnIntent.putExtra("access_token", response.getAccessToken());
// setResult(RESULT_OK,returnIntent);
Log.d(TAG, "access token: " + response.getAccessToken());
Log.d(TAG, response.getExpiresIn());
Log.d(TAG, response.getRefreshToken());
_intent.putExtra("access_token", response.getAccessToken());
setResult(RESULT_OK, _intent);
finish();
} catch (OAuthSystemException e) {
Log.e(TAG, "OAuth System Exception - Couldn't get access token: " + e.toString());
Toast.makeText(_context, "OAuth System Exception - Couldn't get access token: " + e.toString(), Toast.LENGTH_LONG).show();
} catch (OAuthProblemException e) {
Log.e(TAG, "OAuth Problem Exception - Couldn't get access token");
Toast.makeText(_context, "OAuth Problem Exception - Couldn't get access token", Toast.LENGTH_LONG).show();
}
return null;
}
}
@Override
public void onBackPressed()
{
setResult(RESULT_CANCELED, _intent);
finishActivity();
}
}
呼叫MeetupAuthActivity。 MainActivity：
public void getMeetupAccessToken(){
Intent intent;
intent = new Intent(this, MeetupAuthActivity.class);
// startActivity(intent);
startActivityForResult(intent,GET_MEETUP_ACCESS_TOKEN_ACTIVITY);
}
在MainActivity
，捕获结果的形式权威性的活动。 MainActivity：
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
// if(requestCode == 1 && resultCode == RESULT_OK)
if(requestCode == GET_MEETUP_ACCESS_TOKEN_ACTIVITY)
{
accessToken = data.getExtras().getString("access_token");
saveMeetupAccessTokenToSharedPreferences();
//save meetupid plus device id to parse
getMyMeetupIdFromMeetupServer();
// Log.i(DEBUG_TAG,"MainActivity, accessToken" + accessToken);
}
}