Compose code database

database/app/build.gradle

@@ -8,7 +8,7 @@ check.dependsOn 'assembleDebugAndroidTest'
 
 android {
     namespace 'com.google.firebase.quickstart.database'
-    compileSdk 33
+    compileSdk 34
 
     defaultConfig {
         applicationId "com.google.firebase.quickstart.database"
@@ -89,6 +89,8 @@ dependencies {
 
     // Needed to fix a dependency conflict with FirebaseUI'
     implementation 'androidx.arch.core:core-runtime:2.1.0'
+    implementation 'androidx.compose.runtime:runtime-livedata:1.6.8'
+    implementation 'androidx.navigation:navigation-compose:2.7.7'
 
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'

database/app/src/main/AndroidManifest.xml

@@ -6,7 +6,8 @@
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:supportsRtl="true"
-        android:theme="@style/AppTheme">
+        android:theme="@style/AppTheme"
+        android:enableOnBackInvokedCallback="true">
 
         <activity android:name=".EntryChoiceActivity"
             android:exported="true">
@@ -26,6 +27,11 @@
             android:name=".kotlin.MainActivity"
             android:label="@string/app_name"
             android:theme="@style/AppTheme.NoActionBar" />
+
+        <activity
+            android:name=".kotlin.compose.MainActivity"
+            android:label="@string/app_name"
+            android:theme="@style/AppTheme.NoActionBar" />
     </application>
 
 </manifest>

database/app/src/main/java/com/google/firebase/quickstart/database/EntryChoiceActivity.kt

@@ -8,14 +8,21 @@ class EntryChoiceActivity : BaseEntryChoiceActivity() {
 
     override fun getChoices(): List<Choice> {
         return listOf(
-                Choice(
-                        "Java",
-                        "Run the Firebase Realtime Database quickstart written in Java.",
-                        Intent(this, com.google.firebase.quickstart.database.java.MainActivity::class.java)),
-                Choice(
-                        "Kotlin",
-                        "Run the Firebase Realtime Database quickstart written in Kotlin.",
-                        Intent(this, com.google.firebase.quickstart.database.kotlin.MainActivity::class.java))
+            Choice(
+                "Java",
+                "Run the Firebase Realtime Database quickstart written in Java.",
+                Intent(this, com.google.firebase.quickstart.database.java.MainActivity::class.java)
+            ),
+            Choice(
+                "Kotlin",
+                "Run the Firebase Realtime Database quickstart written in Kotlin.",
+                Intent(this, com.google.firebase.quickstart.database.kotlin.MainActivity::class.java)
+            ),
+            Choice(
+                "Kotlin",
+                "Run the Firebase Realtime Database quickstart written in Compose.",
+                Intent(this, com.google.firebase.quickstart.database.kotlin.compose.MainActivity::class.java)
+            )
         )
     }
 }

database/app/src/main/java/com/google/firebase/quickstart/database/kotlin/MainActivity.kt

@@ -1,36 +1,20 @@
 package com.google.firebase.quickstart.database.kotlin
 
 import android.os.Bundle
+import androidx.activity.compose.setContent
 import androidx.appcompat.app.AppCompatActivity
-import androidx.core.view.isGone
-import androidx.core.view.isVisible
-import androidx.navigation.findNavController
-import com.google.firebase.quickstart.database.R
-import com.google.firebase.quickstart.database.databinding.ActivityMainBinding
+import androidx.compose.runtime.Composable
+import com.google.firebase.quickstart.database.kotlin.compose.navigation.contents.Navigation
 
 class MainActivity : AppCompatActivity() {
-
-    private lateinit var binding: ActivityMainBinding
-
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        binding = ActivityMainBinding.inflate(layoutInflater)
-        setContentView(binding.root)
-        val toolbar = binding.toolbar
-        setSupportActionBar(toolbar)
 
-        val fab = binding.fab
-        val navController = findNavController(R.id.nav_host_fragment)
-        navController.setGraph(R.navigation.nav_graph_kotlin)
-        navController.addOnDestinationChangedListener { _, destination, _ ->
-            if (destination.id == R.id.MainFragment) {
-                fab.isVisible = true
-                fab.setOnClickListener {
-                    navController.navigate(R.id.action_MainFragment_to_NewPostFragment)
-                }
-            } else {
-                fab.isGone = true
-            }
-        }
+        setContent { Navigate() }
     }
+}
+
+@Composable
+fun Navigate() {
+    Navigation()
 }