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Add Gemini Developer API code snippets #649
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Add Gemini Developer API code snippets
cartland 4a8782f
feat(ai): Add Imagen image generation snippets
cartland e25629f
feat(ai): Add Imagen image generation snippets
cartland bcbc639
Merge branch 'main' into cartland/gemini-developer-api
cartland fbc66ef
Upgrade Firebase BOM to 34.4.0
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204 changes: 204 additions & 0 deletions
204
misc/src/main/java/com/example/snippets/ai/GeminiDeveloperApiSnippets.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,204 @@ | ||
| /* | ||
| * 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.example.snippets.ai | ||
|
|
||
| import android.content.ContentResolver | ||
| import android.graphics.Bitmap | ||
| import android.net.Uri | ||
| import com.google.firebase.Firebase | ||
| import com.google.firebase.ai.ai | ||
| import com.google.firebase.ai.type.GenerativeBackend | ||
| import com.google.firebase.ai.type.ImagePart | ||
| import com.google.firebase.ai.type.ResponseModality | ||
| import com.google.firebase.ai.type.content | ||
| import com.google.firebase.ai.type.generationConfig | ||
| import kotlinx.coroutines.CoroutineScope | ||
| import kotlinx.coroutines.launch | ||
|
|
||
| object GeminiDeveloperApi25FlashModelConfiguration { | ||
| // [START android_gemini_developer_api_gemini_25_flash_model] | ||
| // Start by instantiating a GenerativeModel and specifying the model name: | ||
| val model = Firebase.ai(backend = GenerativeBackend.googleAI()) | ||
| .generativeModel("gemini-2.5-flash") | ||
| // [END android_gemini_developer_api_gemini_25_flash_model] | ||
| } | ||
|
|
||
| object Gemini25FlashImagePreviewModelConfiguration { | ||
| // [START android_gemini_developer_api_gemini_25_flash_image_model] | ||
| val model = Firebase.ai(backend = GenerativeBackend.googleAI()).generativeModel( | ||
| modelName = "gemini-2.5-flash-image-preview", | ||
| // Configure the model to respond with text and images (required) | ||
| generationConfig = generationConfig { | ||
| responseModalities = listOf( | ||
| ResponseModality.TEXT, | ||
| ResponseModality.IMAGE | ||
| ) | ||
| } | ||
| ) | ||
| // [END android_gemini_developer_api_gemini_25_flash_image_model] | ||
| } | ||
|
|
||
| @Suppress("unused") | ||
| fun textOnlyInput(scope: CoroutineScope) { | ||
| val model = GeminiDeveloperApi25FlashModelConfiguration.model | ||
| // [START android_gemini_developer_api_text_only_input] | ||
| scope.launch { | ||
| val response = model.generateContent("Write a story about a magic backpack.") | ||
| } | ||
| // [END android_gemini_developer_api_text_only_input] | ||
| } | ||
|
|
||
| @Suppress("unused") | ||
| fun textAndImageInput(scope: CoroutineScope, bitmap: Bitmap) { | ||
| val model = GeminiDeveloperApi25FlashModelConfiguration.model | ||
| // [START android_gemini_developer_api_multimodal_input] | ||
| scope.launch { | ||
| val response = model.generateContent( | ||
| content { | ||
| image(bitmap) | ||
| text("what is the object in the picture?") | ||
| } | ||
| ) | ||
| } | ||
| // [END android_gemini_developer_api_multimodal_input] | ||
| } | ||
|
|
||
| @Suppress("unused") | ||
| fun textAndAudioInput( | ||
| scope: CoroutineScope, | ||
| contentResolver: ContentResolver, | ||
| audioUri: Uri | ||
| ) { | ||
| val model = GeminiDeveloperApi25FlashModelConfiguration.model | ||
| // [START android_gemini_developer_api_multimodal_audio_input] | ||
| scope.launch { | ||
| contentResolver.openInputStream(audioUri).use { stream -> | ||
| stream?.let { | ||
| val bytes = it.readBytes() | ||
|
|
||
| val prompt = content { | ||
| inlineData(bytes, "audio/mpeg") // Specify the appropriate audio MIME type | ||
| text("Transcribe this audio recording.") | ||
| } | ||
|
|
||
| val response = model.generateContent(prompt) | ||
| } | ||
| } | ||
| } | ||
| // [END android_gemini_developer_api_multimodal_audio_input] | ||
| } | ||
|
|
||
| @Suppress("unused") | ||
| fun textAndVideoInput( | ||
| scope: CoroutineScope, | ||
| contentResolver: ContentResolver, | ||
| videoUri: Uri | ||
| ) { | ||
| val model = GeminiDeveloperApi25FlashModelConfiguration.model | ||
| // [START android_gemini_developer_api_multimodal_video_input] | ||
| scope.launch { | ||
| contentResolver.openInputStream(videoUri).use { stream -> | ||
| stream?.let { | ||
| val bytes = it.readBytes() | ||
|
|
||
| val prompt = content { | ||
| inlineData(bytes, "video/mp4") // Specify the appropriate video MIME type | ||
| text("Describe the content of this video") | ||
| } | ||
|
|
||
| val response = model.generateContent(prompt) | ||
| } | ||
| } | ||
| } | ||
| // [END android_gemini_developer_api_multimodal_video_input] | ||
| } | ||
|
|
||
| @Suppress("unused") | ||
| fun multiTurnChat(scope: CoroutineScope) { | ||
| val model = GeminiDeveloperApi25FlashModelConfiguration.model | ||
| // [START android_gemini_developer_api_multiturn_chat] | ||
| val chat = model.startChat( | ||
| history = listOf( | ||
| content(role = "user") { text("Hello, I have 2 dogs in my house.") }, | ||
| content(role = "model") { text("Great to meet you. What would you like to know?") } | ||
| ) | ||
| ) | ||
|
|
||
| scope.launch { | ||
| val response = chat.sendMessage("How many paws are in my house?") | ||
| } | ||
| // [END android_gemini_developer_api_multiturn_chat] | ||
| } | ||
|
|
||
| @Suppress("unused") | ||
| fun generateImageFromText(scope: CoroutineScope) { | ||
| val model = Gemini25FlashImagePreviewModelConfiguration.model | ||
| // [START android_gemini_developer_api_generate_image_from_text] | ||
| scope.launch { | ||
| // Provide a text prompt instructing the model to generate an image | ||
| val prompt = | ||
| "A hyper realistic picture of a t-rex with a blue bag pack roaming a pre-historic forest." | ||
| // To generate image output, call `generateContent` with the text input | ||
| val generatedImageAsBitmap: Bitmap? = model.generateContent(prompt) | ||
| .candidates.first().content.parts.filterIsInstance<ImagePart>() | ||
| .firstOrNull()?.image | ||
| } | ||
| // [END android_gemini_developer_api_generate_image_from_text] | ||
| } | ||
|
|
||
| @Suppress("unused") | ||
| fun editImage(scope: CoroutineScope, bitmap: Bitmap) { | ||
| val model = Gemini25FlashImagePreviewModelConfiguration.model | ||
| // [START android_gemini_developer_api_edit_image] | ||
| scope.launch { | ||
| // Provide a text prompt instructing the model to edit the image | ||
| val prompt = content { | ||
| image(bitmap) | ||
| text("Edit this image to make it look like a cartoon") | ||
| } | ||
| // To edit the image, call `generateContent` with the prompt (image and text input) | ||
| val generatedImageAsBitmap: Bitmap? = model.generateContent(prompt) | ||
| .candidates.first().content.parts.filterIsInstance<ImagePart>().firstOrNull()?.image | ||
| // Handle the generated text and image | ||
| } | ||
| // [END android_gemini_developer_api_edit_image] | ||
| } | ||
|
|
||
| @Suppress("unused") | ||
| fun editImageWithChat(scope: CoroutineScope, bitmap: Bitmap) { | ||
| val model = Gemini25FlashImagePreviewModelConfiguration.model | ||
| // [START android_gemini_developer_api_edit_image_chat] | ||
| scope.launch { | ||
| // Create the initial prompt instructing the model to edit the image | ||
| val prompt = content { | ||
| image(bitmap) | ||
| text("Edit this image to make it look like a cartoon") | ||
| } | ||
| // Initialize the chat | ||
| val chat = model.startChat() | ||
| // To generate an initial response, send a user message with the image and text prompt | ||
| var response = chat.sendMessage(prompt) | ||
| // Inspect the returned image | ||
| var generatedImageAsBitmap: Bitmap? = response | ||
| .candidates.first().content.parts.filterIsInstance<ImagePart>().firstOrNull()?.image | ||
| // Follow up requests do not need to specify the image again | ||
| response = chat.sendMessage("But make it old-school line drawing style") | ||
| generatedImageAsBitmap = response | ||
| .candidates.first().content.parts.filterIsInstance<ImagePart>().firstOrNull()?.image | ||
| } | ||
| // [END android_gemini_developer_api_edit_image_chat] | ||
| } | ||
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Is there a way to use dev site variables in our snippets?
I want us to try to move away from hardcoding the model names in our DAC code blocks.
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Same question. :) Further to this point, we're sharing values with other teams. Can we just add those variables in here or will that cause questionable results?
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The documentation does not currently use variables. If you want to turn those into variables, we could make a separate standalone hard-coded snippet in the documentation that uses the documentation tool variables, but we cannot use the same variables in GitHub. We could then modify the GitHub code to use the same variable name, and define the variable somewhere outside of the snippet region tags.
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@sanbeiji do you have any additional feedback on this? Since there aren't any equivalent documentation variables to consider right now, perhaps we can address that later if those variables are created?