W = F*X

Linkedin ile login olabilmeniz için öncelikle https://www.linkedin.com/secure/developer adresinden kayıt olup yeni bir uygulama oluşturmanız gerekmektedir.
Projenin libs klasöründe şağıdaki jarlar bulunmaktadır.

Bu işlemleri yaptıktan sonra
Şöyle bir main.xml layoutunuz olmalıdır.

main.xml

 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:id="@+id/tv"
    />

<Button
    android:id="@+id/button1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Button" />

</LinearLayout>

Manifest.xmlde şöyle birşey olabilir.

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

    <uses-sdk android:minSdkVersion="4" />

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

    <application android:label="LinkedInTest" >
        <activity
            android:name=".LITestActivity"
            android:label="LinkedIn Test"
            android:launchMode="singleInstance" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <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:host="litestcalback"
                    android:scheme="x-oauthflow-linkedin" />
            </intent-filter>
        </activity>
    </application>

</manifest>

 
Son olarakta LITestActivity sinifinimizda aşağıdaki gibi olmalıdır.

package pl.selvin.android.LinkedInTest;

import java.util.Arrays;

import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import com.google.code.linkedinapi.client.LinkedInApiClient;
import com.google.code.linkedinapi.client.LinkedInApiClientException;
import com.google.code.linkedinapi.client.LinkedInApiClientFactory;
import com.google.code.linkedinapi.client.oauth.LinkedInAccessToken;
import com.google.code.linkedinapi.client.oauth.LinkedInOAuthService;
import com.google.code.linkedinapi.client.oauth.LinkedInOAuthServiceFactory;
import com.google.code.linkedinapi.client.oauth.LinkedInRequestToken;
import com.google.code.linkedinapi.schema.Person;

public class LITestActivity extends Activity {

	static final String CONSUMER_KEY = "api keyiniz";
	static final String CONSUMER_SECRET = "secret keyiniz";

	static final String APP_NAME = "LITest";
	static final String OAUTH_CALLBACK_SCHEME = "x-oauthflow-linkedin";
	static final String OAUTH_CALLBACK_HOST = "litestcalback";
	static final String OAUTH_CALLBACK_URL = String.format("%s://%s",
			OAUTH_CALLBACK_SCHEME, OAUTH_CALLBACK_HOST);
	static final String OAUTH_QUERY_TOKEN = "oauth_token";
	static final String OAUTH_QUERY_VERIFIER = "oauth_verifier";
	static final String OAUTH_QUERY_PROBLEM = "oauth_problem";

	final LinkedInOAuthService oAuthService = LinkedInOAuthServiceFactory
			.getInstance().createLinkedInOAuthService(CONSUMER_KEY,
					CONSUMER_SECRET);
	final LinkedInApiClientFactory factory = LinkedInApiClientFactory
			.newInstance(CONSUMER_KEY, CONSUMER_SECRET);

	static final String OAUTH_PREF = "LIKEDIN_OAUTH";
	static final String PREF_TOKEN = "token";
	static final String PREF_TOKENSECRET = "tokenSecret";
	static final String PREF_REQTOKENSECRET = "requestTokenSecret";

	TextView tv = null;
	LinkedInApiClient client;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		tv = (TextView) findViewById(R.id.tv);

		final SharedPreferences pref = getSharedPreferences(OAUTH_PREF,
				MODE_PRIVATE);
		final String token = pref.getString(PREF_TOKEN, null);
		final String tokenSecret = pref.getString(PREF_TOKENSECRET, null);
		if (token == null || tokenSecret == null) {
			startAutheniticate();
		} else {
			showCurrentUser(new LinkedInAccessToken(token, tokenSecret));
		}

		

	}

	void startAutheniticate() {
		final LinkedInRequestToken liToken = oAuthService
				.getOAuthRequestToken(OAUTH_CALLBACK_URL);
		final String uri = liToken.getAuthorizationUrl();
		getSharedPreferences(OAUTH_PREF, MODE_PRIVATE).edit()
				.putString(PREF_REQTOKENSECRET, liToken.getTokenSecret())
				.commit();
		Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse(uri));
		startActivity(i);
	}

	void finishAuthenticate(final Uri uri) {
		if (uri != null && uri.getScheme().equals(OAUTH_CALLBACK_SCHEME)) {
			final String problem = uri.getQueryParameter(OAUTH_QUERY_PROBLEM);
			if (problem == null) {
				final SharedPreferences pref = getSharedPreferences(OAUTH_PREF,
						MODE_PRIVATE);
				final LinkedInAccessToken accessToken = oAuthService
						.getOAuthAccessToken(
								new LinkedInRequestToken(uri
										.getQueryParameter(OAUTH_QUERY_TOKEN),
										pref.getString(PREF_REQTOKENSECRET,
												null)),
								uri.getQueryParameter(OAUTH_QUERY_VERIFIER));
				pref.edit()
						.putString(PREF_TOKEN, accessToken.getToken())
						.putString(PREF_TOKENSECRET,
								accessToken.getTokenSecret())
						.remove(PREF_REQTOKENSECRET).commit();
				showCurrentUser(accessToken);
			} else {
				Toast.makeText(this,
						"Appliaction down due OAuth problem: " + problem,
						Toast.LENGTH_LONG).show();
				finish();
			}

		}
	}

	void clearTokens() {
		getSharedPreferences(OAUTH_PREF, MODE_PRIVATE).edit()
				.remove(PREF_TOKEN).remove(PREF_TOKENSECRET)
				.remove(PREF_REQTOKENSECRET).commit();
	}

	void showCurrentUser(final LinkedInAccessToken accessToken) {
		client = factory.createLinkedInApiClient(accessToken);

		try {
			final Person p = client.getProfileForCurrentUser();
			// /////////////////////////////////////////////////////////
			// here you can do client API calls ...
			// client.postComment(arg0, arg1);
			// client.updateCurrentStatus(arg0);
			// or any other API call (this sample only check for current user
			// and shows it in TextView)
			// /////////////////////////////////////////////////////////
			tv.setText(p.getLastName() + ", " + p.getFirstName());
		} catch (LinkedInApiClientException ex) {
			clearTokens();
			Toast.makeText(
					this,
					"Appliaction down due LinkedInApiClientException: "
							+ ex.getMessage()
							+ " Authokens cleared - try run application again.",
					Toast.LENGTH_LONG).show();
			finish();
		}

	}

	@Override
	protected void onNewIntent(Intent intent) {
		finishAuthenticate(intent.getData());
	}
}