Juh*_*eja 2 javascript reactjs react-native dropdown
我正在使用react-native-select-dropdown并静态设置数据数组,但不知道如何使用id从api动态设置数据数组
代码 :
const countries = ["Egypt", "Canada", "Australia", "Ireland"]
<SelectDropdown
data={countries}
// defaultValueByIndex={1}
// defaultValue={'Egypt'}
onSelect={(selectedItem, index) => {
console.log(selectedItem, index);
}}
defaultButtonText={"Select"}
buttonTextAfterSelection={(selectedItem, index) => {
return selectedItem;
}}
rowTextForSelection={(item, index) => {
return item;
}}
/>
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如何动态设置国家数组列表,我需要所选项目的标题和 ID,从 api 获取数据是:
const countries = [
{namd: 'Egypt', id: 1},
{namd: 'Canada', id: 2},
{namd: 'Australia', id: 3},
{namd: 'Ireland', id: 4},
];
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这是根据您的要求摘自您的代码的示例。在下面的代码中,下拉菜单将显示国家/地区名称,当您选择其中任何一个时,它将打印所选的国家/地区和 ID。您可以使用 useState 挂钩来管理 API 调用。我已经向您展示了如何管理下拉菜单的响应的示例。
你可以查看我刚刚制作的零食示例 - https://snack.expo.dev/hRpKm2bdg
const countries = [
{namd: 'Egypt', id: 1},
{namd: 'Canada', id: 2},
{namd: 'Australia', id: 3},
{namd: 'Ireland', id: 4},
];
export default function App() {
return (
<View>
<SelectDropdown
data={countries}
onSelect={(selectedItem, index) => {
console.log('selected Country name ->>>>',selectedItem.namd)
console.log('selected Country Id ->>>>',selectedItem.id)
}}
buttonTextAfterSelection={(selectedItem, index) => {
// text represented after item is selected
// if data array is an array of objects then return selectedItem.property to render after item is selected
return selectedItem.namd
}}
rowTextForSelection={(item, index) => {
// text represented for each item in dropdown
// if data array is an array of objects then return item.property to represent item in dropdown
return item.namd
}}
/>
</View>
);
}
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