Integrate Instagram Authentication in Android Application

Posted By : Keshav Gupta | 18-Jan-2018

android

Server side setup :

1.Create a record at Instagram developer url and enlist application for sandbox account.Following is url:

https://www.instagram.com/developer/

2. Get clientId and clientSecret key.You need to utilize them in application side.Make beyond any doubt that your callbackUrl in application and redirectUrl ought to be same.

Android Application Code :

1.Create a class named as AppConstants where we will put above generated credentials.Code will be like:

public static String INSTAGRAM_CALLBACK_URL = "Your callback url";
   // replace below credentials with yours own
    public static String INSTAGRAM_CLIENT_ID = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
    public static String INSTAGRAM_CLIENT_SECRET = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
    public static final String INSTAGRAM_ACCESS_TOKEN = "INSTAGRAM_ACCESS_TOKEN";

    public static boolean isInternetIsAvailable(Context mContext) {
        ConnectivityManager connectivity = (ConnectivityManager) mContext
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        if (connectivity != null) {
            NetworkInfo[] info = connectivity.getAllNetworkInfo();
            if (info != null)
                for (int i = 0; i < info.length; i++)
                    if (info[i].getState() == NetworkInfo.State.CONNECTED) {
                        return true;
                    }

        }
        return false;
    }

2.Make SharedPrefernce class to hold access token locally in device.Create another class named as SessionManager andCode it like this:

  private static final String prefsfile = "MyPrefsName";
    SharedPreferences preferences;
    SharedPreferences.Editor editor;
    Context context;

    public SessionManager(Context context) {
        this.context = context;
        preferences = context.getSharedPreferences(prefsfile,
                Context.MODE_PRIVATE);
        editor = preferences.edit();
    }
    public void saveInstagramAccessToken(String stringToken)
    {
        editor.putString(AppConstants.INSTAGRAM_ACCESS_TOKEN,stringToken);
        editor.commit();
    }

    public String getInstagramAccessToken() {
        return preferences.getString(AppConstants.INSTAGRAM_ACCESS_TOKEN,"");
    }

3.Now we will create a Instagram Configuration class which will generate authUrl ,tokenUrl and will get a call back for AuthDialogListener which will further generate success and failure responses.Code will be like this:

4.Now we will create a InstagramDialog class which will represent authentication window where user will login to its instagram account.This class will load a webview for authurl for instagram.Code will be like this:

6.Create a layout xml file containing Button and pass its reference in activity class as above.

public class InstagramActivity extends AppCompatActivity {
    private Button button;
    private Context context;
    private InstagramConfigApp instagramConfigApp;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_instagram);
        context = InstagramActivity.this;
        button = findViewById(R.id.btnInstagram);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (AppConstants.isInternetIsAvailable(context)) {
                    instagramConfigApp =new InstagramConfigApp(context,AppConstants.INSTAGRAM_CLIENT_ID,AppConstants.INSTAGRAM_CLIENT_SECRET,
                            AppConstants.INSTAGRAM_CALLBACK_URL);
                    if (instagramConfigApp.hasAccessToken()) {
                        instagramConfigApp.authorize();
                    }
                } else {
                    Toast.makeText(context, "Oops!Connection suspended.Check your internet connection", Toast.LENGTH_LONG).show();
                }
            }
        });
    }
}