Facebook activity starting again and again

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I have made an android application with Facebook integration. On click of a button, Facebook activity is starting again and again. Facebook Loading dialog box is opening again and again.

public class FacebookLoginFragment extends FragmentActivity implements IAsyncResponse {

private Facebook facebook; 

public IAsyncResponse iAsyncResponse;

@SuppressWarnings("deprecation")
private AsyncFacebookRunner mAsyncRunner;

private SharedPreferences mPrefs;

private Context _context;

private String facebookID, emailID, requestTAG = "SignUpRequest", access_token ="access_token", access_expires ="access_expires";

@SuppressWarnings("deprecation")
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_main);

    //instantiating context
    _context =FacebookLoginFragment.this;

    facebook = new Facebook(getResources().getString(R.string.app_id));
    mAsyncRunner = new AsyncFacebookRunner(facebook);        

    restIntraction = new RestIntraction(_context);      
}    

@Override
protected void onStart() {
    super.onStart();
    loginToFacebook();
}


@SuppressWarnings("deprecation")
public void loginToFacebook() {

    mPrefs = _context.getSharedPreferences(access_token, Context.MODE_PRIVATE);
    String token = mPrefs.getString(access_token, null);

    mPrefs = _context.getSharedPreferences(access_expires, Context.MODE_PRIVATE);
    long expires = mPrefs.getLong(access_expires, 0);

    if (token != null) {
        facebook.setAccessToken(token);
    }

    if (expires != 0) {
        facebook.setAccessExpires(expires);
    }

        facebook.authorize(this, new DialogListener() {

            @Override
            public void onFacebookError(FacebookError e) {
            }

            @Override
            public void onError(DialogError e) {
            }

            @Override
            public void onComplete(Bundle values) {

                SharedPreferences.Editor editor = mPrefs.edit();

                editor.putString(access_token,
                        facebook.getAccessToken());
                editor.putLong(access_expires,
                        facebook.getAccessExpires());
                editor.commit();
            }

            @Override
            public void onCancel() {
            }
        });

    }

How to resolve this issue?

asked 38 secs ago

Malwinder

3

Facebook activity starting again and again