如何传递 id 参数以导航到详细信息组件？

Question

我正在尝试导航到 ProductDetailsS​​creen.js 并查看独特产品的详细信息，目前我正在使用渲染方法中的参数 id 转到独特产品。 但不幸的是，我收到错误：TypeError: Cannot read property 'params' of undefined。谁能告诉我如何正确地做到这一点，或者如果有人有正确的方法，我将不胜感激。下面是我想要做的事情：

AppNavigator.js：

import * as React from "react";
import { NavigationContainer } from "@react-navigation/native";
import { createStackNavigator } from "@react-navigation/stack";
import HomeScreen from "../screens/HomeScreen";
import ProductsScreen from "../screens/ProductsScreen";
import ProductDetailsScreen from "../screens/ProductDetailsScreen";

const Stack = createStackNavigator();

function MainStackNavigator() {
  return (
    <NavigationContainer>
      <Stack.Navigator>
        <Stack.Screen name="Home" component={HomeScreen} />
        <Stack.Screen name="Products" component={ProductsScreen} />
        <Stack.Screen name="Details" component={ProductDetailsScreen} />
      </Stack.Navigator>
    </NavigationContainer>
  );
}

export default MainStackNavigator;

productDetailScreen.js：

function ProductDetailsScreen(props) {
  const [products, setProducts] = useState([]);
  const id = props.match.params.id;
  useEffect(() => {
    axios
      .get(`http://localhost:3000/api/products/id=${id}`)
      .then((res) => {
        setProducts(res.data.response);
      })
      .catch((err) => {
        console.error(err);
      });
  }, []);

  const dispatch = useDispatch();
  const addItemToCart = (item) =>
    dispatch({ type: ADD_TO_CART, payload: item });
  return (
    <View style={styles.container}>
      <View style={styles.shoppingCartContainer}>
        <View style={styles.shoppingCart}>
          <ShoppingCartIcon />
        </View>
      </View>
      <View>
        <FlatList
          data={products}
          keyExtractor={(item) => item.id.toString()}
          ItemSeparatorComponent={() => Separator()}
          renderItem={({ item, index }) => (
            <View style={styles.productItemContainer}>
              <Image
                source={require(`../../assets/images/${index + 1}.jpg`)}
                style={styles.thumbnail}
              />

              <View style={styles.productItemMetaContainer}>
                <Text style={styles.row} numberOfLines={1}>
                  {item.id}
                </Text>
                <Text style={styles.row}>{item.name}</Text>

                <Text style={styles.row}> {item.categories}</Text>
                <Text style={styles.row}> {item.genders}</Text>
                <Text style={styles.row}> {item.brands}</Text>
                <Text style={styles.price}>$ {item.price}</Text>
                <View style={styles.buttonContainer}>
                  <TouchableOpacity
                    onPress={() => addItemToCart(item)}
                    style={styles.button}
                  >
                    <Text style={styles.buttonText}>Add to Cart +</Text>
                  </TouchableOpacity>
                </View>
              </View>
            </View>
          )}
        />
      </View>
    </View>
  );
}

ProductsScreen.js：

function ProductsScreen() {
  const navigation = useNavigation();
  const [products, setProducts] = useState([]);

  useEffect(() => {
    axios
      .get('http://localhost:3000/product/')
      .then((res) => {
        setProducts(res.data.response);
      })
      .catch((err) => {
        console.error(err);
      });
  }, []);

  const dispatch = useDispatch();
  const addItemToCart = (item) =>
    dispatch({ type: ADD_TO_CART, payload: item });
  return (
    <View style={styles.container}>
      <View style={styles.shoppingCartContainer}>
        <View style={styles.shoppingCart}>
          <ShoppingCartIcon />
        </View>
      </View>
      <View>
        <FlatList
          data={products}
          keyExtractor={(item) => item.id.toString()}
          ItemSeparatorComponent={() => Separator()}
          renderItem={({ item, index }) => (
            <View style={styles.productItemContainer}>
              <Image
                source={require(`../../assets/images/${index + 11}.jpg`)}
                style={styles.thumbnail}
              />

              <View style={styles.productItemMetaContainer}>
                <TouchableOpacity onPress={() => navigation.push("Details")}>
                  <Text style={styles.row} numberOfLines={1}>
                    {item.id}
                  </Text>
                </TouchableOpacity>
                <Text style={styles.row}>{item.name}</Text>

                <Text style={styles.row}> {item.categories}</Text>
                <Text style={styles.row}> {item.genders}</Text>
                <Text style={styles.row}> {item.brands}</Text>
                <Text style={styles.price}>$ {item.price}</Text>
                <View style={styles.buttonContainer}>
                  <TouchableOpacity
                    onPress={() => addItemToCart(item)}
                    style={styles.button}
                  >
                    <Text style={styles.buttonText}>Add to Cart +</Text>
                  </TouchableOpacity>
                </View>
              </View>
            </View>
          )}
        />
      </View>
    </View>
  );
}

Answer 1

您应该使用如下导航功能

<TouchableOpacity onPress={() => navigation.navigate("Details",{id:1})}>

你也可以这样做

<TouchableOpacity onPress={() => navigation.push("Details",{id:1})}>

不同之处在于 push 将添加新屏幕，如果屏幕已经在堆栈中，则导航将返回。

Answer 2

传递参数使用navigation.navigate("SCREEN_NAME", {YOUR_PARAM: "PARAM_VALUE"})

并在其他屏幕上接收参数使用this.props.route.params.YOUR_PARAM