Android - Twitter Integration

Android allows your application to connect to twitter and share data or any kind of updates on twitter. This chapter is about integrating twitter into your application.
There are two ways through which you can integrate twitter and share something from your application. These ways are listed below −
Twitter SDK (Twitter4J)
Intent Share
This is the first way of connecting with Twitter. You have to register your application and then receive some Application Id, and then you have to download the twitter SDK and add it to your project. The steps are listed below −
Create a new twitter application at dev.twitter.com/apps/new  and fill all the information. It is shown below −
Now under settings tab, change the access to read,write and access messages and save the settings. It is shown below −
If everything works fine, you will receive an consumer ID with the secret. Just copy the application id and save it somewhere. It is shown in the image below −
Download twitter sdk here. Copy the twitter4J jar into your project libs folder.
Once everything is complete , you can run the twitter 4J samples which can be found here.
In order to use twitter, you need to instantiate an object of twitter class.It can be done by calling the static method getsingleton(). Its syntax is given below.
// The factory instance is re-usable and thread safe.
Twitter twitter = TwitterFactory.getSingleton();
In order to update the status , you can call updateStatus() method. Its syntax is given below −
Status status = twitter.updateStatus(latestStatus);
System.out.println("Successfully updated the status to [" + status.getText() + "].");
Intent share is used to share data between applications. In this strategy, we will not handle the SDK stuff, but let the twitter application handles it. We will simply call the twitter application and pass the data to share. This way, we can share something on twitter.
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 to ACTION_SEND. Its syntax is given below −
Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
Next thing you need to is to define the type of data to pass, and then pass the data. Its syntax is given below −
shareIntent.setType("text/plain");
shareIntent.putExtra(Intent.EXTRA_TEXT, "Hello, from tutorialspoint");
startActivity(Intent.createChooser(shareIntent, "Share your thoughts"));
Apart from the these methods, there are other methods available that allows intent handling. They are listed below −
addCategory(String category)
This method add a new category to the intent.
createChooser(Intent target, CharSequence title)
Convenience function for creating a ACTION_CHOOSER Intent
getAction()
This method retrieve the general action to be performed, such as ACTION_VIEW
getCategories()
This method return the set of all categories in the intent and the current scaling event
putExtra(String name, int value)
This method add extended data to the intent.
toString()
This method returns a string containing a concise, human-readable description of this object
Here is an example demonstrating the use of IntentShare to share data on twitter. It creates a basic application that allows you to share some text on twitter.
To experiment with this example , you can run this on an actual device or in an emulator.
Following is the content of the modified  MainActivity.java.
package com.example.sairamkrishna.myapplication;

import android.content.Intent;
import android.net.Uri;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.View;

import android.widget.Button;
import android.widget.ImageView;
import java.io.FileNotFoundException;
import java.io.InputStream;

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"));
         }
      });
   }
}
Following is the modified content of the xml res/layout/activity_main.xml.
<?xml version="1.0" encoding="utf-8"?>
<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="Twitter 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/abc"/>

   <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>
Following is the content of AndroidManifest.xml file.
<?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>
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  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.
Select your mobile device as an option and then check your mobile device which will display your default screen −
Now just tap on the button and you will see a list of share providers.
Now just select twitter from that list and then write any message. It is shown in the image below −
Now just select the tweet button and then it would be post on your twitter page. It is shown below −

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