const findProduct =异步（文本）=〉{ //构建表单数据对象.

console.log(name);
let formData = new FormData();

formData.append('FindProduct', text);

const response = await fetch('http://192.168.1.144/api/Search.php', {
method: "POST",
body: formData,
});

const data = await response.json();

setProduct(data);

if(data&&data.length>0){
  setId(data[0].id)
  setName(data[0].prodname)
  setCategory(data[0].category)
  setPrice(data[0].price)
  setQty(data[0].qty)
  setPic(data[0].pic)

  cartarray.push(data)
  
  
  
}
  setShoppingBag(cartarray);
}

常量保存数据=异步（购物袋）=〉{

console.log('2nd cart:>>', shoppingBag)

try {
    await AsyncStorage.setItem('cart', JSON.stringify(shoppingBag)).then(() =>{
      alert('Saved successfully.');console.log('saved cart');
    });
    
} catch (error) {
    console.log(error)
}

};
如果条形码被识别，则第一个函数返回他的所有信息，然后保存在购物袋中