Siga as instruções abaixo para criar apps de exemplo do Android com o framework MediaPipe.
Para saber mais sobre esses apps de exemplo, comece com Hello World! no
Android.
Como criar apps de exemplo do Android com o Bazel
Pré-requisitos
Instale o MediaPipe Framework seguindo estas instruções.
Configure o Java Runtime.
Configure a versão 35.0.0 ou mais recente do SDK do Android.
Configure o Android NDK versão 28 ou mais recente.
O MediaPipe recomenda configurar o SDK e o NDK do Android pelo Android Studio. Consulte abaixo a configuração do Android Studio. No entanto, se você preferir usar o MediaPipe sem o
Android Studio, execute
setup_android_sdk_and_ndk.sh
para fazer o download e configurar o SDK e o NDK do Android antes de criar exemplos de apps
Android.
Se o SDK e o NDK do Android já estiverem instalados (por exemplo, pelo Android Studio), defina
$ANDROID_HOME e $ANDROID_NDK_HOME para apontar para o SDK e o NDK instalados.
Para usar o framework em versões anteriores do Android, o MediaPipe precisa mudar
para um nível de API do Android mais baixo. Para isso, especifique api_level =
$YOUR_INTENDED_API_LEVEL em android_ndk_repository() e/ou
android_sdk_repository() no arquivo
WORKSPACE.
Para criar um app de exemplo do Android, crie o código com base no destino de build
android_binary correspondente. Por exemplo, para o MediaPipe Hands, o destino é handtrackinggpu no arquivo BUILD:
[[["Fácil de entender","easyToUnderstand","thumb-up"],["Meu problema foi resolvido","solvedMyProblem","thumb-up"],["Outro","otherUp","thumb-up"]],[["Não contém as informações de que eu preciso","missingTheInformationINeed","thumb-down"],["Muito complicado / etapas demais","tooComplicatedTooManySteps","thumb-down"],["Desatualizado","outOfDate","thumb-down"],["Problema na tradução","translationIssue","thumb-down"],["Problema com as amostras / o código","samplesCodeIssue","thumb-down"],["Outro","otherDown","thumb-down"]],["Última atualização 2025-07-24 UTC."],[],[],null,["# MediaPipe Framework on Android\n\nPlease follow instructions below to build Android example apps with MediaPipe Framework.\nTo learn more about these example apps, start from [Hello World! on\nAndroid](./hello_world_android.md).\n\nBuilding Android example apps with Bazel\n----------------------------------------\n\n### Prerequisite\n\n- Install MediaPipe Framework following these [instructions](./install.md).\n- Setup Java Runtime.\n- Setup Android SDK release 35.0.0 or later.\n- Setup Android NDK version 28 or later.\n\nMediaPipe recommends setting up Android SDK and NDK via Android Studio (and see\nbelow for Android Studio setup). However, if you prefer using MediaPipe without\nAndroid Studio, please run\n[`setup_android_sdk_and_ndk.sh`](https://github.com/google/mediapipe/blob/master/setup_android_sdk_and_ndk.sh)\nto download and setup Android SDK and NDK before building any Android example\napps.\n\nIf Android SDK and NDK are already installed (e.g., by Android Studio), set\n`$ANDROID_HOME` and `$ANDROID_NDK_HOME` to point to the installed SDK and NDK. \n\n export ANDROID_HOME=\u003cpath to the Android SDK\u003e\n export ANDROID_NDK_HOME=\u003cpath to the Android NDK\u003e\n\nand add `android_ndk_repository()`, `android_sdk_repository()` and `bind()`\nrules into the\n[`WORKSPACE`](https://github.com/google/mediapipe/blob/master/WORKSPACE) file as\nthe following: \n\n $ echo \"android_sdk_repository(name = \\\"androidsdk\\\")\" \u003e\u003e WORKSPACE\n $ echo \"android_ndk_repository(name = \\\"androidndk\\\", api_level=26)\" \u003e\u003e WORKSPACE\n $ echo \"bind(name = \\\"android/crosstool\\\", actual = \\\"@androidndk//:toolchain\\\")\" \u003e\u003e WORKSPACE\n\nIn order to use Framework on earlier Android versions, MediaPipe needs to switch\nto a lower Android API level. You can achieve this by specifying `api_level =\n$YOUR_INTENDED_API_LEVEL` in android_ndk_repository() and/or\nandroid_sdk_repository() in the\n[`WORKSPACE`](https://github.com/google/mediapipe/blob/master/WORKSPACE) file.\n| **Tip:** You can run this [script](https://github.com/google/mediapipe/blob/master/build_android_examples.sh) to build (and install) all MediaPipe Android example apps.\n\n1. To build an Android example app, build against the corresponding\n `android_binary` build target. For instance, for MediaPipe Hands the target\n is `handtrackinggpu` in the\n [BUILD](https://github.com/google/mediapipe/tree/master/mediapipe/examples/android/src/java/com/google/mediapipe/apps/handtrackinggpu/BUILD)\n file:\n\n **Note:** To reduce the binary size, consider appending `--linkopt=\"-s\"` to the command below to strip symbols. \n\n bazel build -c opt --config=android_arm64 mediapipe/examples/android/src/java/com/google/mediapipe/apps/handtrackinggpu:handtrackinggpu\n\n2. Install it on a device with:\n\n adb install bazel-bin/mediapipe/examples/android/src/java/com/google/mediapipe/apps/handtrackinggpu/handtrackinggpu.apk"]]
