准备好从应用中调用 Vertex AI Gemini API 后,请按照“第 1 步”Firebase AI Logic 入门指南中的说明在应用中设置 Firebase 和 SDK。
添加 Gradle 依赖项
将以下 Gradle 依赖项添加到应用模块:
dependencies{// ... other androidx dependencies// Import the BoM for the Firebase platformimplementation(platform("com.google.firebase:firebase-bom:34.1.0"))// Add the dependency for the Firebase AI Logic library. When using the BoM,// you don't specify versions in Firebase library dependenciesimplementation("com.google.firebase:firebase-ai")}
在 Firebase 文档中,您可以详细了解可与 Gemini Developer API 搭配使用的可用模型。您还可以了解如何配置模型参数。
生成文本
如需生成文本回答,请使用提示调用 generateContent()。
Kotlin
// Note: generateContent() is a suspend function, which integrates well// with existing Kotlin code.scope.launch{valresponse=model.generateContent("Write a story about a magic backpack.")}
Java
Contentprompt=newContent.Builder().addText("Write a story about a magic backpack.").build();ListenableFuture<GenerateContentResponse>response=model.generateContent(prompt);Futures.addCallback(response,newFutureCallback<GenerateContentResponse>(){@OverridepublicvoidonSuccess(GenerateContentResponseresult){StringresultText=result.getText();[...]}@OverridepublicvoidonFailure(Throwablet){t.printStackTrace();}},executor);
与 Gemini Developer API 类似,您还可以通过文本提示传递图片、音频、视频和文件(请参阅“通过应用与 Gemini Developer API 互动”)。
[null,null,["最后更新时间 (UTC):2025-08-17。"],[],[],null,["# Vertex AI Gemini API\n\n| **Note:** if you previously integrated Vertex AI in Firebase (with Gradle `import\n| com.google.firebase:vertex-ai`) you can continue using Vertex AI as an API provider with the Firebase AI Logic SDK.\n\nIf you are new to the Gemini API, the [Gemini Developer API](/ai/gemini-developer-api) is the\nrecommended [API provider](/ai/gemini#api-providers) for Android Developers. But if you have specific\ndata [location requirements](https://cloud.google.com/compute/docs/regions-zones) or you are already embedded in the\nVertex AI or Google Cloud environment, you can use the Vertex AI Gemini API.\n\nMigration from Vertex AI in Firebase\n------------------------------------\n\nIf you originally integrated the Gemini Flash and Pro models using Vertex AI in\nFirebase, you can migrate to and continue using Vertex AI as an API provider.\nRead the Firebase documentation for a detailed [migration guide](https://firebase.google.com/docs/vertex-ai/migrate-to-latest-sdk).\n\nGetting started\n---------------\n\nBefore you interact with the Vertex AI Gemini API directly from your app, you\ncan experiment with prompts in [Vertex AI Studio](https://console.cloud.google.com/vertex-ai/studio).\n\n### Set up a Firebase project and connect your app to Firebase\n\nOnce you're ready to call the Vertex AI Gemini API from your app, follow the\ninstructions in the \"Step 1\" Firebase AI Logic getting started guide to set up\nFirebase and the SDK in your app.\n\n### Add the Gradle dependency\n\nAdd the following Gradle dependency to your app module: \n\n dependencies {\n // ... other androidx dependencies\n\n // Import the BoM for the Firebase platform\n implementation(platform(\"com.google.firebase:firebase-bom:34.1.0\"))\n\n // Add the dependency for the Firebase AI Logic library. When using the BoM,\n // you don't specify versions in Firebase library dependencies\n implementation(\"com.google.firebase:firebase-ai\")\n }\n\n### Initialize the generative model\n\nStart by instantiating a `GenerativeModel` and specifying the model name: \n\n### Kotlin\n\n val model = Firebase.ai(backend = GenerativeBackend.vertexAI())\n .generativeModel(\"gemini-2.5-flash\")\n\n### Java\n\n GenerativeModel firebaseAI = FirebaseAI.getInstance(GenerativeBackend.vertexAI())\n .generativeModel(\"gemini-2.5-flash\");\n\n GenerativeModelFutures model = GenerativeModelFutures.from(firebaseAI);\n\nIn the Firebase documentation, you can learn more about the [available\nmodels](https://firebase.google.com/docs/vertex-ai/gemini-models) for use with the Gemini Developer API. You can also learn\nabout [configuring model parameters](https://firebase.google.com/docs/vertex-ai/model-parameters?platform=android).\n\n### Generate text\n\nTo generate a text response, call `generateContent()` with your prompt. \n\n### Kotlin\n\n // Note: generateContent() is a suspend function, which integrates well\n // with existing Kotlin code.\n scope.launch {\n val response = model.generateContent(\"Write a story about a magic backpack.\")\n }\n\n### Java\n\n Content prompt = new Content.Builder()\n .addText(\"Write a story about a magic backpack.\")\n .build();\n\n ListenableFuture\u003cGenerateContentResponse\u003e response = model.generateContent(prompt);\n Futures.addCallback(response, new FutureCallback\u003cGenerateContentResponse\u003e() {\n @Override\n public void onSuccess(GenerateContentResponse result) {\n String resultText = result.getText();\n [...]\n }\n\n @Override\n public void onFailure(Throwable t) {\n t.printStackTrace();\n }\n }, executor);\n\nSimilar to the Gemini Developer API, you can also pass images, audio, video and\nfiles with your text prompt (see \"Interact [with the Gemini Developer API from\nyour app\"](/ai/gemini/developer-api#interact-gemini)).\n\nTo learn more about Firebase AI Logic SDK, read the [Firebase documentation](https://firebase.google.com/docs/vertex-ai/get-started?platform=android)."]]