@Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_add_link);

    ActionBar ab = getSupportActionBar();
    ab.setDisplayHomeAsUpEnabled(true);

    mSaveButton.setOnClickListener(
        new View.OnClickListener() {
          @Override
          public void onClick(View v) {
            String url = mUrlField.getText().toString();
            String notes = mNotesField.getText().toString();

            if (!url.equals("")) {
              ParseObject post = new ParseObject(POSTS);
              post.put(KEY_URL, url);
              post.put(KEY_NOTES, notes);
              post.saveInBackground();
              finish();
            }
          }
        });
  }