dependencies{// Import the BoM for the Firebase platformimplementation(platform("com.google.firebase:firebase-bom:34.1.0"))// Add the dependencies for the App Check libraries// When using the BoM, you don't specify versions in Firebase library dependenciesimplementation("com.google.firebase:firebase-appcheck-playintegrity")}
dependencies{// Add the dependencies for the App Check libraries// When NOT using the BoM, you must specify versions in Firebase library dependenciesimplementation("com.google.firebase:firebase-appcheck-playintegrity:19.0.0")}
针对 Data Connect、Firebase AI Logic、Realtime Database、Cloud Firestore、Cloud Storage、Authentication、Google Identity for iOS、Maps JavaScript API 和 Places API（新版）监控 App Check 请求指标。
针对 Data Connect、Firebase AI Logic、Realtime Database、Cloud Firestore、Cloud Storage、Authentication、Google Identity for iOS、Maps JavaScript API 和 Places API（新版）启用 App Check 强制执行。
[null,null,["最后更新时间 (UTC)：2025-08-21。"],[],[],null,["This page shows you how to enable App Check in an Android app, using the\nbuilt-in Play Integrity provider. When you enable App Check, you help ensure\nthat only your app can access your project's Firebase resources. See an\n[Overview](/docs/app-check) of this feature.\n\nCurrently, the built-in Play Integrity provider only supports Android apps\ndistributed by Google Play. To use Play Integrity's off-Play features, or to use\nApp Check with your own custom provider, see\n[Implement a custom App Check provider](/docs/app-check/android/custom-provider).\n\n1. Set up your Firebase project\n\n1. [Add Firebase to your Android project](/docs/android/setup) if you haven't\n already done so.\n\n2. Enable the Play Integrity API:\n\n 1. In the [Google Play Console](https://play.google.com/console/developers/),\n select your app, or add it if you haven't already done so.\n\n 2. In the **Release** section, click **App integrity**.\n\n 3. Go to the **Play Integrity API** section of the page, click **Link Cloud project**,\n then select your Firebase project from the list of Google Cloud projects.\n The project you select here must be the same Firebase project as the one\n in which you register your app (see the next step).\n\n \u003cbr /\u003e\n\n | You must be an **Owner** of the project you want to link. Note that being a member of a group that has been assigned the Owner role is insufficient.\n\n \u003cbr /\u003e\n\n3. Register your apps to use App Check with the Play Integrity provider in\n the [**App Check**](//console.firebase.google.com/project/_/appcheck) section of\n the Firebase console. You will need to [provide the SHA-256 fingerprint](https://developers.google.com/android/guides/client-auth)\n of your app's signing certificate.\n\n You usually need to register all of your project's apps, because once you\n enable enforcement for a Firebase product, only registered apps will be able\n to access the product's backend resources.\n4. \u003cbr /\u003e\n\n \u003cbr /\u003e\n\n **Optional** : In the app registration settings, set a custom time-to-live\n (TTL) for App Check tokens issued by the provider. You can set the TTL\n to any value between 30 minutes and 7 days. When changing this value, be\n aware of the following tradeoffs:\n - Security: Shorter TTLs provide stronger security, because it reduces the window in which a leaked or intercepted token can be abused by an attacker.\n - Performance: Shorter TTLs mean your app will perform attestation more frequently. Because the app attestation process adds latency to network requests every time it's performed, a short TTL can impact the performance of your app.\n - Quota and cost: Shorter TTLs and frequent re-attestation deplete your quota faster, and for paid services, potentially cost more. See [Quotas \\& limits](/docs/app-check#quotas_limits).\n\n The default TTL of\n **1 hour**\n is reasonable for most apps. Note that the App Check library refreshes\n tokens at approximately half the TTL duration.\n\n \u003cbr /\u003e\n\n \u003cbr /\u003e\n\n2. Add the App Check library to your app In your **module (app-level) Gradle file** (usually `\u003cproject\u003e/\u003capp-module\u003e/build.gradle.kts` or `\u003cproject\u003e/\u003capp-module\u003e/build.gradle`), add the dependency for the App Check library for Android. We recommend using the [Firebase Android BoM](/docs/android/learn-more#bom) to control library versioning.\n\n\u003cbr /\u003e\n\n```carbon\ndependencies {\n // Import the BoM for the Firebase platform\n implementation(platform(\"com.google.firebase:firebase-bom:34.1.0\"))\n\n // Add the dependencies for the App Check libraries\n // When using the BoM, you don't specify versions in Firebase library dependencies\n implementation(\"com.google.firebase:firebase-appcheck-playintegrity\")\n}\n```\n\nBy using the [Firebase Android BoM](/docs/android/learn-more#bom),\nyour app will always use compatible versions of Firebase Android libraries.\n*(Alternative)*\nAdd Firebase library dependencies *without* using the BoM\n\nIf you choose not to use the Firebase BoM, you must specify each Firebase library version\nin its dependency line.\n\n**Note that if you use *multiple* Firebase libraries in your app, we strongly\nrecommend using the BoM to manage library versions, which ensures that all versions are\ncompatible.** \n\n```groovy\ndependencies {\n // Add the dependencies for the App Check libraries\n // When NOT using the BoM, you must specify versions in Firebase library dependencies\n implementation(\"com.google.firebase:firebase-appcheck-playintegrity:19.0.0\")\n}\n```\n\n\u003cbr /\u003e\n\n3. Initialize App Check\n\nAdd the following initialization code to your app so that it runs before you use\nany other Firebase SDKs: \n\nKotlin \n\n```kotlin\nFirebase.initialize(context = this)\nFirebase.appCheck.installAppCheckProviderFactory(\n PlayIntegrityAppCheckProviderFactory.getInstance(),\n)https://github.com/firebase/snippets-android/blob/391c1646eacf44d2aab3f76bcfa60dfc6c14acf1/appcheck/app/src/main/java/com/google/firebase/example/appcheck/kotlin/MainActivity.kt#L20-L23\n```\n\nJava \n\n```java\nFirebaseApp.initializeApp(/*context=*/ this);\nFirebaseAppCheck firebaseAppCheck = FirebaseAppCheck.getInstance();\nfirebaseAppCheck.installAppCheckProviderFactory(\n PlayIntegrityAppCheckProviderFactory.getInstance());https://github.com/firebase/snippets-android/blob/391c1646eacf44d2aab3f76bcfa60dfc6c14acf1/appcheck/app/src/main/java/com/google/firebase/example/appcheck/MainActivity.java#L22-L25\n```\n\nNext steps\n\nOnce the App Check library is installed in your app, start distributing the\nupdated app to your users.\n\nThe updated client app will begin sending App Check tokens along with every\nrequest it makes to Firebase, but Firebase products will not require the tokens\nto be valid until you enable enforcement in the App Check section of the\nFirebase console.\n\nMonitor metrics and enable enforcement\n\nBefore you enable enforcement, however, you should make sure that doing so won't\ndisrupt your existing legitimate users. On the other hand, if you're seeing\nsuspicious use of your app resources, you might want to enable enforcement\nsooner.\n\nTo help make this decision, you can look at App Check metrics for the\nservices you use:\n\n- [Monitor App Check request metrics](/docs/app-check/monitor-metrics) for Firebase AI Logic, Data Connect, Realtime Database, Cloud Firestore, Cloud Storage, Authentication, Google Identity for iOS, Maps JavaScript API, and Places API (New).\n- [Monitor App Check request metrics for Cloud Functions](/docs/app-check/monitor-functions-metrics).\n\nEnable App Check enforcement\n\nWhen you understand how App Check will affect your users and you're ready to\nproceed, you can enable App Check enforcement:\n\n- [Enable App Check enforcement](/docs/app-check/enable-enforcement) for Firebase AI Logic, Data Connect, Realtime Database, Cloud Firestore, Cloud Storage, Authentication, Google Identity for iOS, Maps JavaScript API, and Places API (New).\n- [Enable App Check enforcement for Cloud Functions](/docs/app-check/cloud-functions).\n\nUse App Check in debug environments\n\nIf, after you have registered your app for App Check, you want to run your\napp in an environment that App Check would normally not classify as valid,\nsuch as an emulator during development, or from a continuous integration (CI)\nenvironment, you can create a debug build of your app that uses the\nApp Check debug provider instead of a real attestation provider.\n\nSee [Use App Check with the debug provider on Android](/docs/app-check/android/debug-provider)."]]
