feat: add basic wrapping to support compose

app/build.gradle.kts

@@ -1,35 +1,33 @@
 // NOTE: this project uses Gradle Kotlin DSL. More common build.gradle instructions can be found in
 // the main README.
 plugins {
-  id("com.android.application")
+    id("com.android.application")
+    id("org.jetbrains.kotlin.android")
+    id("org.jetbrains.kotlin.plugin.compose")
+    id("org.jetbrains.compose")
+    id("com.google.gms.google-services")
+    id("kotlin-kapt")
 }
 
 android {
-    compileSdk = Config.SdkVersions.compile
-
     namespace = "com.firebase.uidemo"
+    compileSdk = Config.SdkVersions.compile
 
     defaultConfig {
         minSdk = Config.SdkVersions.min
         targetSdk = Config.SdkVersions.target
-
         versionName = Config.version
         versionCode = 1
-
+        multiDexEnabled = true
         resourcePrefix("fui_")
         vectorDrawables.useSupportLibrary = true
     }
 
-    defaultConfig {
-        multiDexEnabled = true
-    }
-
     buildTypes {
-        named("release").configure {
+        release {
             // For the purposes of the sample, allow testing of a proguarded release build
             // using the debug key
             signingConfig = signingConfigs["debug"]
-
             postprocessing {
                 isRemoveUnusedCode = true
                 isRemoveUnusedResources = true
@@ -39,6 +37,16 @@ android {
         }
     }
 
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+
+    buildFeatures {
+        viewBinding = true
+        compose = true
+    }
+
     lint {
         // Common lint options across all modules
 
@@ -60,15 +68,6 @@ android {
 
         baseline = file("$rootDir/library/quality/lint-baseline.xml")
     }
-
-    compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_17
-        targetCompatibility = JavaVersion.VERSION_17
-    }
-
-    buildFeatures {
-        viewBinding = true
-    }
 }
 
 dependencies {
@@ -80,23 +79,33 @@ dependencies {
     implementation(project(":database"))
     implementation(project(":storage"))
 
+    implementation(Config.Libs.Misc.glide)
+    kapt(Config.Libs.Misc.glideCompiler)
+
     implementation(Config.Libs.Provider.facebook)
     // Needed to override Facebook
     implementation(Config.Libs.Androidx.cardView)
     implementation(Config.Libs.Androidx.customTabs)
-
-    implementation(Config.Libs.Misc.glide)
-    annotationProcessor(Config.Libs.Misc.glideCompiler)
-
     // Used for FirestorePagingActivity
     implementation(Config.Libs.Androidx.paging)
 
     // The following dependencies are not required to use the Firebase UI library.
     // They are used to make some aspects of the demo app implementation simpler for
     // demonstrative purposes, and you may find them useful in your own apps; YMMV.
+
     implementation(Config.Libs.Misc.permissions)
     implementation(Config.Libs.Androidx.constraint)
     debugImplementation(Config.Libs.Misc.leakCanary)
+
+    val composeBom = platform("androidx.compose:compose-bom:2025.02.00")
+    implementation(composeBom)
+    androidTestImplementation(composeBom)
+
+    implementation("androidx.compose.material3:material3")
+    implementation("androidx.activity:activity-compose:1.10.0")
+    implementation("androidx.lifecycle:lifecycle-viewmodel-compose:2.8.5")
+    debugImplementation("androidx.compose.ui:ui-tooling")
+    releaseImplementation("androidx.compose.ui:ui-tooling-preview")
 }
 
-apply(plugin = "com.google.gms.google-services")
+kapt { correctErrorTypes = true } // optional but avoids some kapt warnings

app/src/main/AndroidManifest.xml

@@ -19,17 +19,13 @@
         tools:ignore="GoogleAppIndexingWarning,UnusedAttribute"
         android:usesCleartextTraffic="true">
 
-        <activity android:name=".ChooserActivity"
-            android:exported="true">
+        <activity android:name=".auth.compose.ChooserComposeActivity"
+            android:exported="true"
+            android:label="@string/app_name">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
-
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
-
-            <meta-data
-                android:name="android.app.shortcuts"
-                android:resource="@xml/shortcuts" />
         </activity>
 
         <!-- Auth UI demo -->
@@ -42,6 +38,10 @@
         <activity
             android:name=".auth.AnonymousUpgradeActivity"
             android:label="@string/title_anonymous_upgrade" />
+        <activity
+            android:name=".auth.compose.AuthComposeActivity"
+            android:label="@string/auth_compose_title"
+            android:exported="false" />
 
         <!-- Firestore demo -->
         <activity

app/src/main/java/com/firebase/uidemo/ChooserActivity.java

@@ -25,6 +25,7 @@
 import com.firebase.ui.auth.util.ExtraConstants;
 import com.firebase.uidemo.auth.AnonymousUpgradeActivity;
 import com.firebase.uidemo.auth.AuthUiActivity;
+import com.firebase.uidemo.auth.compose.AuthComposeActivity;
 import com.firebase.uidemo.database.firestore.FirestoreChatActivity;
 import com.firebase.uidemo.database.firestore.FirestorePagingActivity;
 import com.firebase.uidemo.database.realtime.FirebaseDbPagingActivity;
@@ -65,6 +66,7 @@ private static class ActivityChooserAdapter
             extends RecyclerView.Adapter<ActivityStarterHolder> {
         private static final Class[] CLASSES = new Class[]{
                 AuthUiActivity.class,
+                AuthComposeActivity.class,
                 AnonymousUpgradeActivity.class,
                 FirestoreChatActivity.class,
                 FirestorePagingActivity.class,
@@ -75,6 +77,7 @@ private static class ActivityChooserAdapter
 
         private static final int[] DESCRIPTION_NAMES = new int[]{
                 R.string.title_auth_activity,
+                R.string.auth_compose_title,
                 R.string.title_anonymous_upgrade,
                 R.string.title_firestore_activity,
                 R.string.title_firestore_paging_activity,
@@ -84,6 +87,7 @@ private static class ActivityChooserAdapter
         };
 
         private static final int[] DESCRIPTION_IDS = new int[]{
+                R.string.desc_auth,
                 R.string.desc_auth,
                 R.string.desc_anonymous_upgrade,
                 R.string.desc_firestore,

app/src/main/java/com/firebase/uidemo/auth/SignedInActivity.java

@@ -29,8 +29,6 @@
 import com.firebase.uidemo.R;
 import com.firebase.uidemo.databinding.SignedInLayoutBinding;
 import com.firebase.uidemo.storage.GlideApp;
-import com.google.android.gms.tasks.OnCompleteListener;
-import com.google.android.gms.tasks.Task;
 import com.google.android.material.dialog.MaterialAlertDialogBuilder;
 import com.google.android.material.snackbar.Snackbar;
 import com.google.firebase.auth.EmailAuthProvider;

app/src/main/java/com/firebase/uidemo/auth/compose/AuthComposeActivity.kt

@@ -0,0 +1,61 @@
+package com.firebase.uidemo.auth.compose
+
+import android.content.Context
+import android.content.Intent
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.ui.Modifier
+import com.firebase.ui.auth.AuthUI
+import com.firebase.ui.auth.data.model.FirebaseAuthUIAuthenticationResult
+import com.firebase.uidemo.R
+import com.firebase.uidemo.auth.SignedInActivity
+import com.firebase.uidemo.ui.theme.FirebaseUIDemoTheme
+
+class AuthComposeActivity : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContent {
+            FirebaseUIDemoTheme {
+                Surface(
+                    modifier = Modifier.fillMaxSize(),
+                    color = MaterialTheme.colorScheme.background
+                ) {
+                    AuthScreen { result ->
+                        handleSignInResponse(result)
+                    }
+                }
+            }
+        }
+    }
+
+    private fun handleSignInResponse(result: FirebaseAuthUIAuthenticationResult) {
+        when (result.resultCode) {
+            RESULT_OK -> {
+                // Successfully signed in
+                val response = result.idpResponse
+                startActivity(SignedInActivity.createIntent(this, response))
+                finish()
+            }
+            else -> {
+                // Sign in failed
+                val response = result.idpResponse
+                if (response == null) {
+                    // User pressed back button
+                    finish()
+                    return
+                }
+                // Handle other error cases
+            }
+        }
+    }
+
+    companion object {
+        fun createIntent(context: Context): Intent {
+            return Intent(context, AuthComposeActivity::class.java)
+        }
+    }
+} 

app/src/main/java/com/firebase/uidemo/auth/compose/AuthScreen.kt

@@ -0,0 +1,41 @@
+package com.firebase.uidemo.auth.compose
+
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import com.firebase.ui.auth.AuthUI
+import com.firebase.ui.auth.AuthUI.IdpConfig
+import com.firebase.ui.auth.data.model.FirebaseAuthUIAuthenticationResult
+import com.firebase.ui.auth.compose.FirebaseAuthUI
+import com.firebase.uidemo.R
+import com.google.firebase.auth.EmailAuthProvider
+import com.google.firebase.auth.GoogleAuthProvider
+
+@Composable
+fun AuthScreen(
+    onSignInResult: (FirebaseAuthUIAuthenticationResult) -> Unit
+) {
+    val providers = listOf(
+        IdpConfig.GoogleBuilder().build(),
+        IdpConfig.EmailBuilder().build()
+    )
+
+    Box(
+        modifier = Modifier.fillMaxSize(),
+        contentAlignment = Alignment.Center
+    ) {
+        FirebaseAuthUI(
+            providers = providers,
+            onSignInResult = onSignInResult,
+            theme = R.style.AppTheme,
+            logo = R.drawable.firebase_auth_120dp,
+            tosUrl = "https://www.google.com/policies/terms/",
+            privacyPolicyUrl = "https://www.google.com/policies/privacy/",
+            enableCredentials = true,
+            enableAnonymousUpgrade = false
+        )
+    }
+} 

app/src/main/java/com/firebase/uidemo/auth/compose/ChooserComposeActivity.kt

@@ -0,0 +1,17 @@
+package com.firebase.uidemo.auth.compose
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import com.firebase.uidemo.ui.theme.FirebaseUIDemoTheme
+
+class ChooserComposeActivity : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContent {
+            FirebaseUIDemoTheme {
+                ChooserScreen()
+            }
+        }
+    }
+}