“ main”尚未注册AppRegistry-反应本地博览会

Question

直到今天早上，我一直在运行expo sdk 36，当时我使用expo upgrade命令升级到sdk 38。 在安装并使用expo r -c启动终端后，我在下图中得到错误。 我已经多次重启了终端，但是仍然无法正常工作

Answer 1

帮助我使用const Demo = () => { const [editF, setEdit] = useState(false); const onFinish = values => { console.log("Received values of form:", values); setEdit(true); }; const edit = () => { setEdit(true); }; return ( <Form name="dynamic_form_nest_item" onFinish={onFinish} autoComplete="off"> <Form.List name="users"> {(fields, { add, remove }) => { return ( <div> {fields.map(field => editF === false ? ( <Space key={field.key} style={{ display: "flex", marginBottom: 8 }} align="start" > <Form.Item {...field} name={[field.name, "first"]} fieldKey={[field.fieldKey, "first"]} rules={[ { required: true, message: "Missing first name" } ]} > <Input placeholder="First Name" /> </Form.Item> <Form.Item {...field} name={[field.name, "last"]} fieldKey={[field.fieldKey, "last"]} rules={[{ required: true, message: "Missing last name" }]} > <Input placeholder="Last Name" /> </Form.Item> <button onClick={edit}>edit</button> </Space> ) : ( "edit" ) )} <Form.Item> <Button type="dashed" onClick={() => { add(); }} block > <PlusOutlined /> Add field </Button> </Form.Item> </div> ); }} </Form.List> <Form.Item> <Button type="primary" htmlType="submit"> Submit </Button> </Form.Item> </Form>并运行expo@38.0.8