Android

教學

https://github.com/react-native-google-signin/google-signin/blob/master/docs/android-guide.md

1.新增 Firebase 專案，然後產生金鑰後填入

https://stackoverflow.com/questions/15727912/sha-1-fingerprint-of-keystore-certificate

之後按下一步加上必要的 build.gradle 參數。

2.app/build.gradle

dependencies {
    implementation platform('com.google.firebase:firebase-bom:26.0.0')
    implementation 'com.google.firebase:firebase-analytics'
    implementation(project(":react-native-google-signin"))
    ....

3.外層的 project/build.gradle

    ext {
        ...
        googlePlayServicesAuthVersion = "16.0.1"
    }
    repositories {
        ...
        google()
    }
    dependencies {
        ....
        classpath("com.android.tools.build:gradle:3.5.3")
        classpath 'com.google.gms:google-services:4.3.4'

4. setting.gradle 加上

include ':react-native-google-signin', ':app'
project(':react-native-google-signin').projectDir = new File(rootProject.projectDir, '../node_modules/@react-native-community/google-signin/android')

5.MainApplication.java

React Native 0.6 以後因為 Auto linking 不用此步驟

        @Override
        protected List<ReactPackage> getPackages() {
          @SuppressWarnings("UnnecessaryLocalVariable")
          List<ReactPackage> packages = new PackageList(this).getPackages();
          // Packages that cannot be autolinked yet can be added manually here, for example:
          // 加上下面這行
          packages.add(new RNGoogleSigninPackage());
          return packages;
        }

範例

import {GoogleSignin, statusCodes} from '@react-native-community/google-signin';

GoogleSignin.configure();

const handleGoogleSignIn = async () => {
    try {
      await GoogleSignin.hasPlayServices();
      const userInfo = await GoogleSignin.signIn();
      console.log(userInfo)
    } catch (error) {
      console.log(error)
      if (error.code === statusCodes.SIGN_IN_CANCELLED) {
        // user cancelled the login flow
      } else if (error.code === statusCodes.IN_PROGRESS) {
        // operation (e.g. sign in) is in progress already
      } else if (error.code === statusCodes.PLAY_SERVICES_NOT_AVAILABLE) {
        // play services not available or outdated
      } else {
        // some other error happened
      }
    }
  };