Android - LinkedIn Integration Tutorial

2021-12-07 14:00 Android开发

Android allows your application to connect to Linkedin and share data or any kind of updates on Linkedin. This chapter is about integrating Linkedin into your application. There are two ways through which you can integrate Linkedin and share something from your application. These ways are listed below. <ul class="list" > <li > Linkedin SDK (Scribe) </li> <li > Intent Share </li> </ul> <h2 >Integrating Linkedin SDK</h2> This is the first way of connecting with Linkedin. You have to register your application and then receive some Application Id , and then you have to download the Linkedin SDK and add it to your project. The steps are listed below. <h3 >Registering your application</h3> Create a new Linkedin application at<a href="https://www.linkedin.com/secure/developer" rel="nofollow" target="_blank">https://www.linkedin.com/secure/developer</a>. Click on add new application. It is shown below: <img alt="Android Linkedin Tutorial" src="http://www.tutorialspoint.com/android/images/linkedin_1.jpg" /> Now fill in your application name , description and your website url. It is shown below − <img alt="Android Linkedin Tutorial" src="http://www.tutorialspoint.com/android/images/linkedin_2.jpg" /> If everything works fine, you will receive an API key with the secret. Just copy the API key and save it somewhere. It is shown in the image below − <img alt="Android Linkedin Tutorial" src="http://www.tutorialspoint.com/android/images/linkedin_3.jpg" /> <h3 >Downloading SDK and integrating it</h3> Download Linkedin sdk<a href="https://github.com/fernandezpablo85/scribe-java" >here</a>. Copy the scribe-1.3.0.jar jar into your project libs folder. <h3 >Posting updates on Linkedin application</h3> Once everything is complete, you can run the Linkedin samples which can be found<a href="https://github.com/fernandezpablo85/scribe-java/blob/master/src/test/java/org/scribe/examples/LinkedInExample.java" rel="nofollow" target="_blank">here</a>. <h2 >Intent share</h2> Intent share is used to share data between applications. In this strategy, we will not handle the SDK stuff, but let the Linkedin application handles it. We will simply call the Linkedin application and pass the data to share. This way, we can share something on Linkedin. Android provides intent library to share data between activities and applications. In order to use it as share intent, we have to specify the type of the share intent toACTION_SEND. Its syntax is given below − <pre class="prettyprint notranslate prettyprinted" > Intent shareIntent = new Intent(); shareIntent.setAction(Intent.ACTION_SEND);</pre> Next thing you need to is to define the type of data to pass , and then pass the data. Its syntax is given below − <pre class="prettyprint notranslate prettyprinted" > shareIntent.setType("text/plain"); shareIntent.putExtra(Intent.EXTRA_TEXT, "Hello, from tutorialspoint"); startActivity(Intent.createChooser(shareIntent, "Share your thoughts"));</pre> Apart from the these methods , there are other methods available that allows intent handling. They are listed below − <table class="table table-bordered" > <tbody > <tr > <th >Sr.No</th> <th >Method & description</th> </tr> <tr > <td >1</td> <td >addCategory(String category) This method add a new category to the intent. </td> </tr> <tr > <td >2</td> <td >createChooser(Intent target, CharSequence title) Convenience function for creating a ACTION_CHOOSER Intent </td> </tr> <tr > <td >3</td> <td >getAction() This method retrieve the general action to be performed, such as ACTION_VIEW </td> </tr> <tr > <td >4</td> <td >getCategories() This method return the set of all categories in the intent.nt and the current scaling event </td> </tr> <tr > <td >5</td> <td >putExtra(String name, int value) This method add extended data to the intent. </td> </tr> <tr > <td >6</td> <td >toString() This method returns a string containing a concise, human-readable description of this object </td> </tr> </tbody> </table> <h2 >Example</h2> Here is an example demonstrating the use of IntentShare to share data on Linkedin. It creates a basic application that allows you to share some text on Linkedin. To experiment with this example, you can run this on an actual device or in an emulator. <table class="table table-bordered" > <tbody > <tr > <th >Steps</th> <th >Description</th> </tr> <tr > <td >1</td> <td >You will use Android studio to create an Android application under a package com.example.sairamkrishna.myapplication. While creating this project, make sure you Target SDK and Compile With at the latest version of Android SDK to use higher levels of APIs.</td> </tr> <tr > <td >2</td> <td >Modify src/MainActivity.java file to add necessary code.</td> </tr> <tr > <td >3</td> <td >Modify the res/layout/activity_main to add respective XML components</td> </tr> <tr > <td >4</td> <td >Run the application and choose a running android device and install the application on it and verify the results</td> </tr> </tbody> </table> Following is the content of the modified main activity fileMainActivity.java. <pre class="prettyprint notranslate prettyprinted" > package com.example.sairamkrishna.myapplication; import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.graphics.Typeface; import android.net.Uri; import android.support.v7.app.ActionBarActivity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; import java.io.FileNotFoundException; import java.io.InputStream; import static java.lang.System.currentTimeMillis; public class MainActivity extends ActionBarActivity { private ImageView img; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); img=(ImageView)findViewById(R.id.imageView); Button b1=(Button)findViewById(R.id.button); b1.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent sharingIntent = new Intent(Intent.ACTION_SEND); Uri screenshotUri = Uri.parse("android.resource://comexample.sairamkrishna.myapplication/*"); try { InputStream stream = getContentResolver().openInputStream(screenshotUri); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } sharingIntent.setType("image/jpeg"); sharingIntent.putExtra(Intent.EXTRA_STREAM, screenshotUri); startActivity(Intent.createChooser(sharingIntent, "Share image using")); } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.menu_main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); //noinspection SimplifiableIfStatement if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } }</pre> Following is the modified content of the xmlres/layout/activity_main.xml. <pre class="prettyprint notranslate prettyprinted" > <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/textView" android:layout_alignParentTop="true" android:layout_centerHorizontal="true" android:textSize="30dp" android:text="Linkedin Share" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Tutorials Point" android:id="@+id/textView2" android:layout_below="@+id/textView" android:layout_centerHorizontal="true" android:textSize="35dp" android:textColor="#ff16ff01" /> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/imageView" android:layout_below="@+id/textView2" android:layout_centerHorizontal="true" android:src="@drawable/logo"/> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Share" android:id="@+id/button" android:layout_marginTop="61dp" android:layout_below="@+id/imageView" android:layout_centerHorizontal="true" /> </RelativeLayout></pre> Following is the content ofAndroidManifest.xmlfile. <pre class="prettyprint notranslate prettyprinted" > <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.sairamkrishna.myapplication" > <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name=".MainActivity" 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></pre> Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from Android studio, open one of your project's activity files and click Run<img alt="Eclipse Run Icon" class="inline" src="http://www.tutorialspoint.com/android/images/eclipse_run.jpg" />icon from the toolbar. Before starting your application, Android studio will display following window to select an option where you want to run your Android application. <img alt="Android Linkedin Tutorial" src="http://www.tutorialspoint.com/android/images/choose_device.jpg" /> Select your mobile device as an option and then check your mobile device which will display your default screen − <img alt="Android Linkedin Tutorial" src="http://www.tutorialspoint.com/android/images/link1.jpg" /> Now just tap on the image logo and you will see a list of share providers. <img alt="Android Linkedin Tutorial" src="http://www.tutorialspoint.com/android/images/link2.jpg" /> Now just select Linkedin from that list and then write any message. It is shown in the image below − <img alt="Android Linkedin Tutorial" src="http://www.tutorialspoint.com/android/images/link3.jpg" /> Now it shows updating information <img alt="Android Twitter Tutorial" src="http://www.tutorialspoint.com/android/images/link4.jpg" /> <div></div>