Gemini Image chat sample (#87)

Co-authored-by: lethargicpanda <[email protected]>

Author: lethargicpanda

ai-catalog/app/build.gradle.kts

@@ -90,6 +90,7 @@ dependencies {
     implementation(project(":samples:gemini-video-summarization"))
     implementation(project(":samples:gemini-live-todo"))
     implementation(project(":samples:gemini-video-metadata-creation"))
+    implementation(project(":samples:gemini-image-chat"))
 
     testImplementation(libs.junit)
     androidTestImplementation(libs.androidx.junit)

ai-catalog/app/src/main/java/com/android/ai/catalog/ui/domain/SampleCatalog.kt

@@ -20,6 +20,7 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.graphics.Color
 import com.android.ai.catalog.R
 import com.android.ai.samples.geminichatbot.GeminiChatbotScreen
+import com.android.ai.samples.geminiimagechat.GeminiImageChatScreen
 import com.android.ai.samples.geminilivetodo.ui.TodoScreen
 import com.android.ai.samples.geminimultimodal.ui.GeminiMultimodalScreen
 import com.android.ai.samples.geminivideometadatacreation.VideoMetadataCreationScreen
@@ -32,6 +33,14 @@ import com.android.ai.samples.magicselfie.ui.MagicSelfieScreen
 
 @androidx.annotation.RequiresPermission(android.Manifest.permission.RECORD_AUDIO)
 val sampleCatalog = listOf(
+    SampleCatalogItem(
+        title = R.string.gemini_image_chat,
+        description = R.string.gemini_image_chat_description,
+        route = "GeminiImageChatScreen",
+        sampleEntryScreen = { GeminiImageChatScreen() },
+        tags = listOf(SampleTags.GEMINI_FLASH, SampleTags.FIREBASE),
+        needsFirebase = true,
+    ),
     SampleCatalogItem(
         title = R.string.gemini_multimodal_sample_title,
         description = R.string.gemini_multimodal_sample_description,

ai-catalog/app/src/main/res/values/strings.xml

@@ -22,6 +22,8 @@
     <string name="gemini_video_metadata_creation_sample_description">"Generate metadata of a video (from a cloud URL or Youtube) with Gemini API powered by Firebase"</string>
     <string name="gemini_live_todo_title">Gemini Live Todo</string>
     <string name="gemini_live_todo_description">"Simple Todo app using the Gemini Live API to interact with the items in the list"</string>
+    <string name="gemini_image_chat">Gemini Image Chat</string>
+    <string name="gemini_image_chat_description">Conversational Image generation with Gemini</string>
     <string name="firebase_required">Firebase Required</string>
     <string name="firebase_required_description">This feature requires Firebase to be initialized.</string>
     <string name="close">Close</string>

ai-catalog/samples/gemini-image-chat/.gitignore

@@ -0,0 +1 @@
+/build

ai-catalog/samples/gemini-image-chat/build.gradle.kts

@@ -0,0 +1,75 @@
+/*
+ * Copyright 2025 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+plugins {
+    alias(libs.plugins.android.library)
+    alias(libs.plugins.jetbrains.kotlin.android)
+    alias(libs.plugins.ksp)
+    alias(libs.plugins.compose.compiler)
+}
+
+android {
+    namespace = "com.android.ai.samples.geminiimagechat"
+    compileSdk = 35
+
+    buildFeatures {
+        compose = true
+    }
+
+    defaultConfig {
+        minSdk = 24
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+        consumerProguardFiles("consumer-rules.pro")
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro",
+            )
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+    kotlinOptions {
+        jvmTarget = "17"
+    }
+}
+
+dependencies {
+
+    implementation(libs.androidx.core.ktx)
+    implementation(libs.androidx.appcompat)
+    implementation(platform(libs.androidx.compose.bom))
+    implementation(libs.androidx.material.icons.extended)
+    implementation(platform(libs.firebase.bom))
+    implementation(libs.firebase.ai)
+    implementation(libs.hilt.android)
+    implementation(libs.hilt.navigation.compose)
+    implementation(libs.androidx.lifecycle.runtime.compose)
+    implementation(libs.androidx.material3.android)
+    implementation(libs.coil.compose)
+    ksp(libs.hilt.compiler)
+
+    testImplementation(libs.junit)
+    androidTestImplementation(libs.androidx.junit)
+    androidTestImplementation(libs.androidx.espresso.core)
+}

ai-catalog/samples/gemini-image-chat/consumer-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

ai-catalog/samples/gemini-image-chat/proguard-rules.pro

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2025 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.ai.samples.geminiimagechat
+
+import android.graphics.Bitmap
+import android.net.Uri
+
+data class ChatMessage(
+    val text: String,
+    val timestamp: Long,
+    val isIncoming: Boolean = false,
+    val senderIconUrl: Uri? = null,
+    val image: Bitmap? = null,
+)