React Native中的Picker和PickerIOS错误

Question

我正在尝试在本机反应中使用Picker和PickerIOS，并且显示正确，值正确更改，但是我的控制台因与Picker.item和PickerIOS.item有关的错误而崩溃。不完全确定我对此能做些什么，似乎所有进口据我所知都是正确的。

//imports

import React, { Component } from "react";
import {
  Text,
  View,
  ScrollView,
  Switch,
  TouchableOpacity,
  Platform,
  TextInput,
  Picker,
  PickerIOS
} from "react-native";
import styles from "./styles";
import colors from "../../../../Constants/Colors";
import { validateBlank } from "../../../Components/InputValidation/Validate";
import Axios from "axios";

{Platform.select({
  ios: (
    <PickerIOS
      selectedValue={this.state.businessCountry}
      itemStyle={{ height: 50, width: 250 }}
      onValueChange={(itemValue, itemIndex) => {
        this.setState({ businessCountry: itemValue });
      }}
    >
      <PickerIOS.item label="Select your Country" value={null} />
      {this.state.countries.map((country, index) => {
        return (
          <PickerIOS.item
            label={country.name}
            value={country.name}
            key={index}
          />
        );
      })}
    </PickerIOS>
  ),
  android: (
    <Picker
      selectedValue={this.state.businessCountry}
      itemStyle={{ height: 50, width: 250 }}
      onValueChange={(itemValue, itemIndex) => {
        this.setState({ businessCountry: itemValue });
      }}
    >
      {this.state.countries.map((country, index) => {
        return (
          <Picker.item
            label={country.name}
            value={country.name}
            key={index}
          />
        );
      })}
    </Picker>
  )
})}

控制台中的错误消息，其中有两个与每个选择器相关

Answer 1

问题仅仅是一个错字。我使用的是Picker.item和PickerIOS.item，而不是Picker.Item和PickerIOS.Item。