lol

FindBookActivity.java

    EditText titleQuery;

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

        titleQuery = (EditText) findViewById(R.id.title_query);
    }

    public void findBook(View view) {
        String titleToFind = titleQuery.getText().toString();

        if (!titleToFind.isEmpty()) {
            //TODO znajdź książkę
        }

    }