Introduce

Cloud function is a Serverless Computing services , Provide FaaS（Function as a Service） Ability , It can help developers greatly simplify the affairs related to application development and operation and maintenance , Reduce the implementation threshold of application functions , Quickly build business capabilities . Here's how to do it in Flutter Integrate cloud functions under the framework .

Integration steps

1. install flutter Environmental Science

a) download Flutter sdk package , Address ：https://flutter.dev/docs/get-started/install/windows

Unzip the package to any folder

b) take flutter Add the command file to the environment variable

c) stay Android Studio Download Flutter and Dart plug-in unit

2. Opening service & Create a project

a) stay AGC establish Android Apply and activate cloud functions

b) Create the function we need in the cloud function , Refer to the official documents for specific steps ：

https://developer.huawei.com/consumer/cn/doc/development/AppGallery-connect-Guides/agc-cloudfunction-config-0000001058511532

c) After the function is created, we need to create a trigger , End side trigger we need to create HTTP trigger , Please refer to the official documents for specific operation methods ：

https://developer.huawei.com/consumer/cn/doc/development/AppGallery-connect-Guides/agc-cloudfunction-httptrigger-0000001126992899

d) stay Android Studio New China Flutter engineering

e)  take agconnect-services.json File put in Android/app Under the table of contents

f) To configure Maven Warehouse address and AGC Plug-in address .

  1. open Flutter project android Under folder build.gradle file .
  2. stay allprojects -> repositories It's equipped with maven Warehouse address .
  3. stay buildscript ->repositories Middle configuration maven Warehouse address .
  4. stay buildscript ->dependencies Middle configuration AppGallery Connect Plug-in address .

3. Add compilation dependencies and AGC Plug-in address .

a) open Flutter project android/app Under folder build.gradle file .

b) Add the following configuration to the file .

4. Integrate SDK

stay pubspec.yaml Add remote configuration to the file pub rely on

And then click Pub get To synchronize

5. Basic function

The function of cloud function is actually very simple , All we need to do on the end side is to call the cloud functions , But here are a few steps

a) We need to create one FunctionCallable Example , Pass in the trigger ID when we created the trigger 

FunctionCallable functionCallable = FunctionCallable("test-\$latest");

b) We need to pass the input parameters of the function map In the format of 

Map<String, dynamic> parameters = <String, dynamic> {

    'year': _functionTextController.text

};

c) Finally, we passed call Method calls the cloud function after the input parameter is passed in. 

FunctionResult functionResult = await functionCallable.call(parameters);

adopt FunctionResult, We can get the return of the function .

summary

Huawei AGC Cloud functions support the deployment of some complex or the same computing processes on the cloud , Client pass SDK You can get the calculation result you want by calling , It saves a lot of development cost and convenience for developers .

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