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Este documento explica como começar a desenvolver com a API Awareness no
Android. A API Awareness faz parte do Google Play Services.
Para usar a API Awareness, você precisa de uma Conta do Google.
Se você já tem uma conta, então está tudo pronto. Você também pode usar uma
Conta do Google separada para fins de teste.
Antes de começar
Receber uma chave de API
Se você ainda não ativou a API Awareness nem recebeu uma chave de API do Google,
siga as etapas em Inscrição e chaves de API
para fazer isso.
No arquivo build.gradle
do projeto, inclua o repositório Maven do Google
nas seções buildscript
e allprojects
:
buildscript {
repositories {
google()
}
}
allprojects {
repositories {
google()
}
}
Adicione as dependências da API Awareness ao arquivo Gradle
no nível do app do seu módulo, que geralmente é app/build.gradle
:
dependencies {
implementation 'com.google.android.gms:play-services-awareness:19.1.0'
}
Adicione a chave da API Awareness ao arquivo AndroidManifest.xml
do app. Para fazer
isso, adicione uma tag <meta-data>
com
android:name="com.google.android.awareness.API_KEY"
. Para android:value
,
insira sua própria chave da API Awareness, entre aspas.
<manifest>
<application>
<meta-data
android:name="com.google.android.awareness.API_KEY"
android:value="API_KEY"/>
</application>
</manifest>
Adicione as permissões necessárias ao arquivo AndroidManifest.xml
do app. As
permissões necessárias variam, dependendo dos métodos de API e dos tipos de cerca que
o app usa.
Exemplo de chamada
O exemplo de chamada para
getDetectedActivity()
demonstra como usar o modelo de serviços do Google Play sem conexão com a
API Awareness:
// Each type of contextual information in the snapshot API has a corresponding "get" method.
// For instance, this is how to get the user's current Activity.
Awareness.getSnapshotClient(this).getDetectedActivity()
.addOnSuccessListener(new OnSuccessListener<DetectedActivityResponse>() {
@Override
public void onSuccess(DetectedActivityResponse dar) {
ActivityRecognitionResult arr = dar.getActivityRecognitionResult();
// getMostProbableActivity() is good enough for basic Activity detection.
// To work within a threshold of confidence,
// use ActivityRecognitionResult.getProbableActivities() to get a list of
// potential current activities, and check the confidence of each one.
DetectedActivity probableActivity = arr.getMostProbableActivity();
int confidence = probableActivity.getConfidence();
String activityStr = probableActivity.toString();
mLogFragment.getLogView().println("Activity: " + activityStr
+ ", Confidence: " + confidence + "/100");
}
})
Próximas etapas
Saiba mais sobre as diferentes APIs da API Awareness:
Exceto em caso de indicação contrária, o conteúdo desta página é licenciado de acordo com a Licença de atribuição 4.0 do Creative Commons, e as amostras de código são licenciadas de acordo com a Licença Apache 2.0. Para mais detalhes, consulte as políticas do site do Google Developers. Java é uma marca registrada da Oracle e/ou afiliadas.
Última atualização 2025-08-31 UTC.
[null,null,["Última atualização 2025-08-31 UTC."],[[["\u003cp\u003eThis documentation provides a guide on how to start developing with the Awareness API on Android, which is part of Google Play services and requires a Google Account.\u003c/p\u003e\n"],["\u003cp\u003eBefore starting, developers need to obtain an API key, configure their app by adding necessary dependencies and permissions in the \u003ccode\u003ebuild.gradle\u003c/code\u003e and \u003ccode\u003eAndroidManifest.xml\u003c/code\u003e files, respectively, and include their API key in the manifest.\u003c/p\u003e\n"],["\u003cp\u003eAn example call demonstrates using the connectionless Google Play services model with the Awareness API, specifically showing how to get the user's current activity using the \u003ccode\u003egetDetectedActivity()\u003c/code\u003e method.\u003c/p\u003e\n"],["\u003cp\u003eDevelopers can further explore the Awareness API through the Snapshot API and Fence API guides and references for more advanced functionalities.\u003c/p\u003e\n"]]],["To begin using the Awareness API, obtain a Google API key and configure your Android app. This involves adding Google's Maven repository to your project's `build.gradle` file and including the Awareness API dependency in your module's `build.gradle`. Insert your API key into `AndroidManifest.xml` and add necessary permissions, depending on the API methods used. The `getDetectedActivity()` example shows how to retrieve the user's current activity.\n"],null,["# Get started\n\nThis document explains how to start to develop with the Awareness API on\nAndroid. The Awareness API is part of [Google Play services](/android/guides/overview).\n\nTo use the Awareness API, you need a [Google Account](//www.google.com/accounts/NewAccount).\nIf you already have an account, then you're all set. You might also want a\nseparate Google Account for testing purposes.\n\nBefore you begin\n----------------\n\n### Obtain an API key\n\nIf you haven't already enabled the Awareness API and obtained a Google API key,\nfollow the steps in [Signup and API keys](/awareness/android-api/get-a-key)\nto do so.\n\n### Configure your app\n\n1. In your project-level `build.gradle` file, include Google's Maven repository\n in both your `buildscript` and `allprojects` sections:\n\n buildscript {\n repositories {\n google()\n }\n }\n\n allprojects {\n repositories {\n google()\n }\n }\n\n2. Add the dependencies for the Awareness API to your module's app-level\n Gradle file, which is usually `app/build.gradle`:\n\n dependencies {\n implementation 'com.google.android.gms:play-services-awareness:19.1.0'\n }\n\n3. Add your Awareness API Key to your app's `AndroidManifest.xml` file. To do\n so, add a `\u003cmeta-data\u003e` tag with\n `android:name=\"com.google.android.awareness.API_KEY\"`. For `android:value`,\n insert your own Awareness API Key, surrounded by quotation marks.\n\n ```xml\n \u003cmanifest\u003e\n \u003capplication\u003e\n \u003cmeta-data\n android:name=\"com.google.android.awareness.API_KEY\"\n android:value=\"\u003cvar translate=\"no\"\u003eAPI_KEY\u003c/var\u003e\"/\u003e\n \u003c/application\u003e\n \u003c/manifest\u003e\n ```\n4. Add the necessary permissions to your app's `AndroidManifest.xml` file. The\n required permissions vary, depending on the API methods and fence types that\n your app uses.\n\nExample call\n------------\n\nThe following example call to\n[`getDetectedActivity()`](/android/reference/com/google/android/gms/awareness/SnapshotClient#getDetectedActivity())\ndemonstrates how to use the connectionless Google Play services model with the\nAwareness API: \n\n // Each type of contextual information in the snapshot API has a corresponding \"get\" method.\n // For instance, this is how to get the user's current Activity.\n Awareness.getSnapshotClient(this).getDetectedActivity()\n .addOnSuccessListener(new OnSuccessListener\u003cDetectedActivityResponse\u003e() {\n @Override\n public void onSuccess(DetectedActivityResponse dar) {\n ActivityRecognitionResult arr = dar.getActivityRecognitionResult();\n // getMostProbableActivity() is good enough for basic Activity detection.\n // To work within a threshold of confidence,\n // use ActivityRecognitionResult.getProbableActivities() to get a list of\n // potential current activities, and check the confidence of each one.\n DetectedActivity probableActivity = arr.getMostProbableActivity();\n\n int confidence = probableActivity.getConfidence();\n String activityStr = probableActivity.toString();\n mLogFragment.getLogView().println(\"Activity: \" + activityStr\n + \", Confidence: \" + confidence + \"/100\");\n }\n })\n\nNext steps\n----------\n\nLearn more about the different APIs within the Awareness API:\n\n- [Snapshot API guide](/awareness/android-api/snapshot-api-overview) and [Snapshot API reference](/android/reference/com/google/android/gms/awareness/snapshot/package-summary).\n- [Fence API guide](/awareness/android-api/fence-api-overview) and [Fence API\n reference](/android/reference/com/google/android/gms/awareness/fence/package-summary)."]]