Question

This is my onCreate function.

Since there is lot of code inside onclickListener for Hello i want to shift it outside to a method. how can i do that ?

public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        facebook.authorize(this, permissions, Facebook.FORCE_DIALOG_AUTH,
                new DialogListener() {

                    public void onComplete(Bundle values) {
                    }

                    public void onFacebookError(FacebookError error) {
                    }

                    public void onError(DialogError e) {
                    }

                    public void onCancel() {

                    }
                });

        hello = (Button) findViewById(R.id.hello);
        info = (TextView) findViewById(R.id.facebook_info);
        content = (TextView) findViewById(R.id.content);

        hello.setOnClickListener(new View.OnClickListener() {
            public void onClick(View arg0) {
                // bundle.putString("fields", "email");
                try {
                    about = facebook.request("me");
                    json = Util.parseJson(about);
                    id = json.getString("id");
                    first_name = json.getString("first_name");
                    last_name = json.getString("last_name");
                    email = json.getString("email");

                    if (!json.isNull("username")) {
                        username = json.getString("username");
                    } else {
                        Log.d("TAG", "Username not set");
                    }

                    dob = json.getString("birthday");
                    gender = json.getString("gender");
                    location = json.getString("location");

                    json_location = Util.parseJson(location);
                    place = json_location.getString("name");

                } catch (MalformedURLException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                } catch (JSONException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (FacebookError e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }

                // info.setText(about);
                content.setText(id + " \n" + first_name + " \n" + last_name
                        + " \n" + email + " \n" + username + " \n" + dob
                        + " \n" + gender + " \n" + place);
            }
        });

    }

Answer 1

Create an inner class extending OnClickListener.

private class MyOnClickListener implements OnClickListener { ... }

In here you add the exact same implementation as you all ready have for the anonymous OnClickListener. Just make sure that all variables you access are declared as local variables in your Activity-class.

Then when you set the onClickListener you just do this:

hello.setOnClickListener( new MyOnCLickListener() );