Amplify Auth のセットアップ

import { defineAuth } from "@aws-amplify/backend"

/**
 * Define and configure your auth resource
 * @see https://docs.amplify.aws/gen2/build-a-backend/auth
 */
export const auth = defineAuth({
  loginWith: {
    email: true,
  },
})

import { defineAuth } from '@aws-amplify/backend';

export const auth = defineAuth({
  loginWith: {
    email: {
      otpLogin: true // Enable email-based one-time passwords
    }
  }
});

npx ampx sandbox --outputs-out-dir <path_to_app/src/main/res/raw>

compileOptions {
    // Support for modern Java features
    isCoreLibraryDesugaringEnabled = true
}
buildFeatures {
    compose = true
}
composeOptions {
  kotlinCompilerExtensionVersion = "1.2.0"
}
dependencies {
    coreLibraryDesugaring("com.android.tools:desugar_jdk_libs:ANDROID_DESUGAR_VERSION")
}

dependencies {
    implementation("com.amplifyframework.ui:authenticator:ANDROID_AUTHENTICATOR_VERSION")
}

import android.app.Application
import android.util.Log
import com.amplifyframework.AmplifyException
import com.amplifyframework.auth.cognito.AWSCognitoAuthPlugin
import com.amplifyframework.core.Amplify
import com.amplifyframework.core.configuration.AmplifyOutputs

class MyAmplifyApp: Application() {
    override fun onCreate() {
        super.onCreate()

        try {
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            Amplify.addPlugin(AWSCognitoAuthPlugin())
            Amplify.configure(AmplifyOutputs(R.raw.amplify_outputs), applicationContext)
            Log.i("MyAmplifyApp", "Initialized Amplify")
        } catch (error: AmplifyException) {
            Log.e("MyAmplifyApp", "Could not initialize Amplify", error)
        }
    }
}

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.material3.Button
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.tooling.preview.Preview
import com.amplifyframework.core.Amplify
import com.amplifyframework.ui.authenticator.ui.Authenticator
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import <your-package-name>.ui.theme.MyAmplifyAppTheme

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            MyAmplifyAppTheme {
                // A surface container using the 'background' color from the theme
                Surface(
                    modifier = Modifier.fillMaxSize(),
                    color = MaterialTheme.colorScheme.background
                ) {
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                    Authenticator { state ->
                        Column {
                            Text(
                                text = "Hello ${state.user.username}!",
                            )
                            Button(onClick = {
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                                Amplify.Auth.signOut {  }
                            }) {
                                Text(text = "Sign Out")
                            }
                        }
                    }
                }
            }
        }
    }
}