我想在兩個或其中一個輸入為空時禁用按鈕。順便說一句，它是 Native Base 框架。    <View style={styles.personal} key={data}>        <Item floatingLabel>          <Label>Your name:</Label>          <Input />        </Item>        <Item floatingLabel style={{marginVertical: 20}}>          <Label>Your age:</Label>          <Input keyboardType="numeric"/>        </Item>        <Button style={{alignSelf: 'center'}} rounded disabled={false}          onPress={() => this.refs.swiper.scrollBy(1)}>            <Text style={{width: '70%', textAlign: 'center'}}>Next</Text>          </Button>      </View>我嘗試過的：state = {  inputName: "",  inputAge: "",}<Input value={this.setState({inputName: value})}/> <Input value={this.setState({inputAge: value})} keyboardType="numeric"/><Button style={{alignSelf: 'center'}} rounded           disabled={this.state.inputName==="" & this.state.inputAge==="" ? true:false }          onPress={() => this.refs.swiper.scrollBy(1)}>            <Text style={{width: '70%', textAlign: 'center'}}>Next</Text>        </Button>變量值錯誤