<View>
    <Toolbar
        leftElement="arrow-back"
        centerElement={ this.props.route.title }
        onLeftElementPress={ () => { this.props.navigator.replace({ index: 2, title: 'Skan ISBN', page: ScanIsbn }) } }
    />
    <Text>Tytuł:</Text>
    <TextInput onChangeText={ (text) => this.setState({ title: text })} value={ this.state.title } />
    <Text>Autor:</Text>
    <TextInput onChangeText={ (text) => this.setState({ author: text })} value={ this.state.author } />
    <Text>ISBN:</Text>
    <TextInput onChangeText={ (text) => this.setState({ isbn: text })} value={ this.state.isbn } />
</View>