Twitter Integration with Mobile Application

While integrating our mobile application with Twitter, I want to share the steps.

1 - Create you application in Twitter developer page using the mentioned link : https://dev.twitter.com/apps/new

2 - Fill all the details mentioned in the Twitter new application page, and create a new app.

3 - Now, Once your application will create, it will give you these information.

• Consumer key
• Consumer secret
• Access token
• Access token secret

Now, there are two ways to integrate Twitter with your mobile.
a - Single User Implementation :
This works only for a single user. It means, only one user will register with the application, and every time when user want to post any data in Twitter, it will post only to his/her Twitter page.
This can be achieved by this way :

//Get authorization to twitter.
Credential credentials = new Credential(consumerKey, consumerSecret, accessToken);

//Create account manager for tweet the post.
UserAccountManager accManager = UserAccountManager.getInstance(credentials);

//Verify credentials and post to twitter
try {
                    if(accManager.verifyCredential()) {
                        Dialog.alert("Authenticated");
                        //post data to Twitter

                    }else{
                        Dialog.alert("Authentication Failed");
                    }
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    System.out.println("IOException Occured: "+e.getMessage());
                    e.printStackTrace();
                } catch (LimitExceededException e) {
                    // TODO Auto-generated catch block
                    System.out.println("LimitExceededException Occured: "+e.getMessage());
                    e.printStackTrace();
                }


b - Multiple User Implementation :
This works for multiple user. Any user can enter his username and password, and post data to his/her twitter profile.
For this, first our application should be authorized by Twitter. To do this, we need to send an Authorization mail to api@twitter.com. Once, the application will authorize, you will get a confirmation mail.

Now, to share your post to Twitter, do this :

                Credential credentials = new Credential("username or email", "password", "consumerKey", "consumerSecret");
                UserAccountManager accManager = UserAccountManager.getInstance(credentials);
           
                //If your application is authenticated then it returns token value, else return null.
                Token token = accManager.getAccessToken();
               
                try {
                    if(accManager.verifyCredential()) {
                        Dialog.alert("Authenticated");
                        //post data to Twitter

                    }else{
                        Dialog.alert("Authentication Failed");
                    }
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    System.out.println("IOException Occured: "+e.getMessage());
                    e.printStackTrace();
                } catch (LimitExceededException e) {
                    // TODO Auto-generated catch block
                    System.out.println("LimitExceededException Occured: "+e.getMessage());
                    e.printStackTrace();
                }


- Here cunsumerKey and consumerSecret are reference to the application. And token is reference to authorized user. If your application is not authorized, application will throw Http 401 error (Unauthorized Exception).