Linkedin Integration in android | Android Linkedin Api | Post on Linkedin | Android Linkedin Integration Tutorial|LinkedIn Integration in Android App

Hello Friends,

I am going to share the steps of LinkedIn Integration in android.

Steps for LinkedIn Integration :

     1. Go to developer site(https://www.linkedin.com/secure/developer) and create
         an APP.
         

linkedin

   


  2. Getting API key(Consumer Key)  and Secret key:
   

  3. Add following code in Your app and don't forgot to replace the key
      from the config.java file.
     

1. LinkedInSampleActivity

package com.example.linkedin;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.EnumSet;

import oauth.signpost.OAuthConsumer;
import oauth.signpost.commonshttp.CommonsHttpOAuthConsumer;
import oauth.signpost.exception.OAuthCommunicationException;
import oauth.signpost.exception.OAuthExpectationFailedException;
import oauth.signpost.exception.OAuthMessageSignerException;

import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;

import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Build;
import android.os.Bundle;
import android.os.StrictMode;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.example.linkedin.R;
import com.google.code.linkedinapi.client.LinkedInApiClient;
import com.google.code.linkedinapi.client.LinkedInApiClientFactory;
import com.google.code.linkedinapi.client.enumeration.ProfileField;
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;
import com.mukesh.linkedin.LinkedinDialog.OnVerifyListener;
import com.squareup.picasso.Picasso;

/**
 * @author Mukesh Kumar Yadav
 */
public class LinkedInSampleActivity extends Activity {
 Button login;
 Button share;
 EditText et;
 TextView name,profile;
 ImageView photo;
 public static final String OAUTH_CALLBACK_HOST = "litestcalback";

 final LinkedInOAuthService oAuthService = LinkedInOAuthServiceFactory
            .getInstance().createLinkedInOAuthService(
                    Config.LINKEDIN_CONSUMER_KEY,Config.LINKEDIN_CONSUMER_SECRET);
 final LinkedInApiClientFactory factory = LinkedInApiClientFactory
   .newInstance(Config.LINKEDIN_CONSUMER_KEY,
     Config.LINKEDIN_CONSUMER_SECRET);
 LinkedInRequestToken liToken;
 LinkedInApiClient client;
 LinkedInAccessToken accessToken = null;

 @TargetApi(Build.VERSION_CODES.GINGERBREAD)
 @SuppressLint("NewApi")
 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  
  if( Build.VERSION.SDK_INT >= 9){
            StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
            StrictMode.setThreadPolicy(policy); 
  }
  share = (Button) findViewById(R.id.share);
  name = (TextView) findViewById(R.id.name);
  profile = (TextView) findViewById(R.id.profile);
  et = (EditText) findViewById(R.id.et_share);
  login = (Button) findViewById(R.id.login);
  photo = (ImageView) findViewById(R.id.photo);

  login.setOnClickListener(new OnClickListener() {
   public void onClick(View v) {
    linkedInLogin();
   }
  });

  // share on linkedin
  share.setOnClickListener(new OnClickListener() {

   public void onClick(View v) {
    String share = et.getText().toString();
    if (null != share && !share.equalsIgnoreCase("")) {
     OAuthConsumer consumer = new CommonsHttpOAuthConsumer(Config.LINKEDIN_CONSUMER_KEY, Config.LINKEDIN_CONSUMER_SECRET);
        consumer.setTokenWithSecret(accessToken.getToken(), accessToken.getTokenSecret());
     DefaultHttpClient httpclient = new DefaultHttpClient();
     HttpPost post = new HttpPost("https://api.linkedin.com/v1/people/~/shares");
     try {
      consumer.sign(post);
     } catch (OAuthMessageSignerException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
     } catch (OAuthExpectationFailedException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
     } catch (OAuthCommunicationException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
     } // here need the consumer for sign in for post the share
     post.setHeader("content-type", "text/XML");
     String myEntity = "<share><comment>"+ share +"</comment><visibility><code>anyone</code></visibility></share>";
     try {
      post.setEntity(new StringEntity(myEntity));
      org.apache.http.HttpResponse response = httpclient.execute(post);
      Toast.makeText(LinkedInSampleActivity.this,
        "Shared sucessfully", Toast.LENGTH_SHORT).show();
     } catch (UnsupportedEncodingException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
     } catch (ClientProtocolException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
     } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
     }
    }else {
     Toast.makeText(LinkedInSampleActivity.this,
       "Please enter the text to share",
       Toast.LENGTH_SHORT).show();
    }
    
    /*String share = et.getText().toString();
    if (null != share && !share.equalsIgnoreCase("")) {
     client = factory.createLinkedInApiClient(accessToken);
     client.postNetworkUpdate(share);
     et.setText("");
     Toast.makeText(LinkedInSampleActivity.this,
       "Shared sucessfully", Toast.LENGTH_SHORT).show();
    } else {
     Toast.makeText(LinkedInSampleActivity.this,
       "Please enter the text to share",
       Toast.LENGTH_SHORT).show();
    }*/
   }
  });
 }

 private void linkedInLogin() {
  ProgressDialog progressDialog = new ProgressDialog(
    LinkedInSampleActivity.this);

  LinkedinDialog d = new LinkedinDialog(LinkedInSampleActivity.this,
    progressDialog);
  d.show();

  // set call back listener to get oauth_verifier value
  d.setVerifierListener(new OnVerifyListener() {
   @SuppressLint("NewApi")
   public void onVerify(String verifier) {
    try {
     Log.i("LinkedinSample", "verifier: " + verifier);

     accessToken = LinkedinDialog.oAuthService
       .getOAuthAccessToken(LinkedinDialog.liToken,
         verifier);
     LinkedinDialog.factory.createLinkedInApiClient(accessToken);
     client = factory.createLinkedInApiClient(accessToken);
     // client.postNetworkUpdate("Testing by Mukesh!!! LinkedIn wall post from Android app");
     Log.i("LinkedinSample",
       "ln_access_token: " + accessToken.getToken());
     Log.i("LinkedinSample",
       "ln_access_token: " + accessToken.getTokenSecret());
     //Person p = client.getProfileForCurrentUser();
     Person p =  client.getProfileForCurrentUser(EnumSet.of(
       ProfileField.ID, ProfileField.FIRST_NAME,
       ProfileField.PHONE_NUMBERS, ProfileField.LAST_NAME,
       ProfileField.HEADLINE, ProfileField.INDUSTRY,
       ProfileField.PICTURE_URL, ProfileField.DATE_OF_BIRTH,
       ProfileField.LOCATION_NAME, ProfileField.MAIN_ADDRESS,
        ProfileField.LOCATION_COUNTRY));
     Log.e("create access token secret", client.getAccessToken()
       .getTokenSecret());

     if(p!=null) {
      name.setText("Welcome " + p.getFirstName() + " "
        + p.getLastName());
      name.setVisibility(0);
      profile.setText("Profile:"+p.getHeadline());
      profile.setVisibility(0);
      String id = p.getId();
      String url = p.getPictureUrl();
      if(url != null && !url.isEmpty()) {
       Picasso.with(LinkedInSampleActivity.this).load(url).into(photo);
       photo.setVisibility(0);
      }
      login.setVisibility(4);
      share.setVisibility(0);
      et.setVisibility(0);
     }

    } catch (Exception e) {
     Log.i("LinkedinSample", "error to get verifier");
     e.printStackTrace();
    }
   }
  });

  // set progress dialog
  progressDialog.setMessage("Loading...");
  progressDialog.setCancelable(true);
  progressDialog.show();
 }
}

2.LinkedinDialog:

package com.example.linkedin;

import java.util.ArrayList;
import java.util.List;

import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.graphics.Picture;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.Window;
import android.webkit.WebView;
import android.webkit.WebView.PictureListener;
import android.webkit.WebViewClient;

import com.google.code.linkedinapi.client.LinkedInApiClientFactory;
import com.google.code.linkedinapi.client.oauth.LinkedInOAuthService;
import com.google.code.linkedinapi.client.oauth.LinkedInOAuthServiceFactory;
import com.google.code.linkedinapi.client.oauth.LinkedInRequestToken;

/**
 * Linkedin dialog
 * 
 * @author Mukesh Kumar Yadav
 */
public class LinkedinDialog extends Dialog {
 private ProgressDialog progressDialog = null;

 public static LinkedInApiClientFactory factory;
 public static LinkedInOAuthService oAuthService;
 public static LinkedInRequestToken liToken;

 /**
  * Construct a new LinkedIn dialog
  * 
  * @param context
  *            activity {@link Context}
  * @param progressDialog
  *            {@link ProgressDialog}
  */
 public LinkedinDialog(Context context, ProgressDialog progressDialog) {
  super(context);
  this.progressDialog = progressDialog;
 }

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  requestWindowFeature(Window.FEATURE_NO_TITLE);// must call before super.
  super.onCreate(savedInstanceState);
  setContentView(R.layout.ln_dialog);

  setWebView();
 }

 /**
  * set webview.
  */
 private void setWebView() {
  LinkedinDialog.oAuthService = LinkedInOAuthServiceFactory.getInstance()
    .createLinkedInOAuthService(Config.LINKEDIN_CONSUMER_KEY,
      Config.LINKEDIN_CONSUMER_SECRET);
  LinkedinDialog.factory = LinkedInApiClientFactory.newInstance(
    Config.LINKEDIN_CONSUMER_KEY, Config.LINKEDIN_CONSUMER_SECRET);

  LinkedinDialog.liToken = LinkedinDialog.oAuthService
    .getOAuthRequestToken(Config.OAUTH_CALLBACK_URL);

  WebView mWebView = (WebView) findViewById(R.id.webkitWebView1);
  mWebView.getSettings().setJavaScriptEnabled(true);

  Log.i("LinkedinSample", LinkedinDialog.liToken.getAuthorizationUrl());
  mWebView.loadUrl(LinkedinDialog.liToken.getAuthorizationUrl());
  mWebView.setWebViewClient(new HelloWebViewClient());

  mWebView.setPictureListener(new PictureListener() {
   @Override
   public void onNewPicture(WebView view, Picture picture) {
    if (progressDialog != null && progressDialog.isShowing()) {
     progressDialog.dismiss();
    }

   }
  });

 }

 /**
  * webview client for internal url loading
  */
 class HelloWebViewClient extends WebViewClient {
  @Override
  public boolean shouldOverrideUrlLoading(WebView view, String url) {
   if (url.contains(Config.OAUTH_CALLBACK_URL)) {
    Uri uri = Uri.parse(url);
    String verifier = uri.getQueryParameter("oauth_verifier");

    cancel();

    for (OnVerifyListener d : listeners) {
     // call listener method
     d.onVerify(verifier);
    }
   } else if (url
     .contains("https://www.linkedin.com/uas/oauth/mukeshyadav4u.blogspot.in")) {
    cancel();
   } else {
    Log.i("LinkedinSample", "url: " + url);
    view.loadUrl(url);
   }

   return true;
  }
 }

 /**
  * List of listener.
  */
 private List listeners = new ArrayList();

 /**
  * Register a callback to be invoked when authentication have finished.
  * 
  * @param data
  *            The callback that will run
  */
 public void setVerifierListener(OnVerifyListener data) {
  listeners.add(data);
 }

 /**
  * Listener for oauth_verifier.
  */
 interface OnVerifyListener {
  /**
   * invoked when authentication have finished.
   * 
   * @param verifier
   *            oauth_verifier code.
   */
  public void onVerify(String verifier);
 }
}

3: Config.java

package com.example.linkedin;

public class Config {

 public static String LINKEDIN_CONSUMER_KEY = "your consumer key here";
 public static String LINKEDIN_CONSUMER_SECRET = "your consumer secret here
";


public static String scopeParams = "rw_nus+r_basicprofile";
 
public static String OAUTH_CALLBACK_SCHEME = "x-oauthflow-linkedin";
public static String OAUTH_CALLBACK_HOST = "callback";
public static String OAUTH_CALLBACK_URL = OAUTH_CALLBACK_SCHEME + "://" + OAUTH_CALLBACK_HOST;
}

4. main.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/blue_bg_rect"
    android:orientation="vertical" >
    <RelativeLayout
        android:id="@+id/header"
       
android:layout_width="fill_parent"
       
  android:layout_height="wrap_content"
       
  android:background="@drawable/blue_gradient_header"
        android:orientation="horizontal"
  >
        <Button
           
  android:id="@+id/logo"
           
  android:layout_width="wrap_content"
           
  android:layout_height="wrap_content"
           
  android:layout_centerHorizontal="false"
           
  android:layout_centerVertical="true"

           
  android:layout_gravity="center"
           
  android:layout_marginLeft="8dp"

           
  android:background="@drawable/logo"

           
  android:padding="4dp"
            android:text=""
  />
        <TextView
           
  android:id="@+id/txtTitle"
           
  android:layout_width="wrap_content"

           
  android:layout_height="32dp"
           
  android:layout_centerHorizontal="true"
           
  android:layout_centerVertical="true"
           
  android:text="Linkedin"
           
  android:textColor="@android:color/white"
           
  android:textSize="22sp"
           
  android:textStyle="bold"
            android:typeface="sans"
  >
        </TextView>
    </RelativeLayout>
    <TextView
        android:id="@+id/name"
       
 android:layout_width="wrap_content"
       
  android:layout_height="wrap_content"
       
  android:layout_below="@+id/header"
        android:padding="15dp"
        android:text="Name"
       
  android:textColor="@android:color/white"
        android:textSize="16sp"
        android:textStyle="bold"
        android:visibility="invisible"
 />
    <Button
        android:id="@+id/share"
       
  android:layout_width="wrap_content"
       
  android:layout_height="wrap_content"
       
  android:layout_alignParentRight="true"
       
  android:layout_below="@+id/et_share"
        android:layout_marginTop="22dp"
       
  android:background="@drawable/linkedin_share"
        android:visibility="invisible"
  />
    <Button
        android:id="@+id/login"
       
  android:layout_width="wrap_content"

       
  android:layout_height="wrap_content"

       
  android:layout_centerHorizontal="true"
       
  android:layout_centerInParent="true"
       
  android:layout_centerVertical="true"
       
  android:background="@drawable/btn_active_pressed"
       
  android:gravity="center_vertical|center_horizontal"
        android:padding="8dp"
        android:text="Login"
       
  android:textColor="@android:color/white"
        android:textStyle="bold" />
    <ImageView
        android:id="@+id/photo"
        android:layout_width="72dp"
        android:layout_height="72dp"
       
  android:layout_alignRight="@+id/et_share"
       
  android:layout_alignTop="@+id/name"

        android:layout_marginTop="22dp"

       
  android:background="@drawable/photo"

        android:padding="5dp"

        android:visibility="invisible"
  />



    <EditText
        android:id="@+id/et_share"
       
 android:layout_width="match_parent"
        android:layout_height="100dp"
       
  android:layout_alignBottom="@+id/login"
       
  android:layout_alignParentRight="true"
        android:ems="10"
       
  android:gravity="top|center_vertical"
        android:hint="Enter Your Text to
  Share"
        android:visibility="invisible"
  >

        <requestFocus />
    </EditText>
</RelativeLayout>

finally the AndroidManifest.xml file:

5. AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest
  xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.example.linkedin"

    android:versionCode="1"

    android:versionName="1.0" >



    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="16"
  />



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

    <application

        android:allowBackup="true"

       
  android:icon="@drawable/ic_launcher"

       
  android:label="@string/app_name"

        android:theme="@style/AppTheme"
  >

        <activity

           
  android:name="com.example.linkedin.LinkedInSampleActivity"

           
  android:label="@string/app_name" >

           
  <intent-filter>

               
  <action android:name="android.intent.action.MAIN" />



               
  <category android:name="android.intent.category.LAUNCHER"
  />

           
  </intent-filter>

        </activity>

    </application>



</manifest>

Note: While Sending or Posting message on LinkedIn , Or shairing message on
           LinkedIn you found following error to:      


I am obtaining the following error when using the resource client.sendMessage():

com.google.code.linkedinapi.client.LinkedInApiClientException: Throttle limit for calls to this resource is reached.
com.google.code.linkedinapi.client.impl.BaseLinkedInApiClient.createLinkedInApiClientException(BaseLinkedInApiClient.java:3906)
com.google.code.linkedinapi.client.impl.BaseLinkedInApiClient.callApiMethod(BaseLinkedInApiClient.java:3846)
com.google.code.linkedinapi.client.impl.BaseLinkedInApiClient.sendMessage(BaseLinkedInApiClient.java:1829)
org.apache.jsp.linkedin_005fEmail_jsp._jspService(linkedin_005fEmail_jsp.java:149)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

This is because on LinkedIn there is a few limits, the number of message you can
share on linkedIn. Check below two links for more knowledge:

1. http://developer.linkedin.com/forum/what-throttle-limit-calls-clientsendmessage
2. http://developer.linkedin.com/documents/throttle-limits---see the per day limit

Few Other links
1. http://developer.linkedin.com/documents/libraries-and-tools
2. https://code.google.com/p/linkedin-j/downloads/list



Download the Complete Source Code : LinkedInDemo

Hope this post Helps you.
Enjoy Coding :)

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