将参数从 Flutter 传递到 Google Cloud Functions

Question

我正在尝试弄清楚如何在 Flutter 和 Google Cloud Functions 之间进行通信。我写了一个简单的 Google 云函数，其中 returns 一个列表和一个参数，但是当我使用参数调用该函数时，我一直收到空值。为什么会这样？

Flutter 函数

Future<void> getFruit() async {
   HttpsCallable callable = FirebaseFunctions.instance.httpsCallable('listFruit');
   final results = await callable.call(['hello']);
   List fruit = results.data;
   print(fruit);// ["Apple", "Banana", "Cherry", "Date", "Fig", "Grapes"]
 }

Google 云函数

const functions = require("firebase-functions");

exports.listFruit = functions.https.onCall((data, context) => {
  return ["Apple", "Banana", "Cherry", "Date", "Fig", "Grapes", data.text];
});

输出

flutter: [Apple, Banana, Cherry, Date, Fig, Grapes, null]

预期输出

flutter: [Apple, Banana, Cherry, Date, Fig, Grapes, hello]

谁能帮我弄清楚为什么我的预期输出没有出现？

Answer 1

替换

final results = await callable.call(['hello']);

和

final results = await callable.call({text: 'hello'});

将参数从 Flutter 传递到 Google Cloud Functions

Passing parameters from Flutter to Google Cloud Functions

dart

flutter

google-cloud-functions

google-cloud-firestore