Özel Kimlik Doğrulama Sistemi Kullanarak Android'de Firebase ile Kimlik Doğrulama
Koleksiyonlar ile düzeninizi koruyun
İçeriği tercihlerinize göre kaydedin ve kategorilere ayırın.
Kimlik doğrulama sunucunuzu, kullanıcı başarılı bir şekilde oturum açtığında özel imzalı jetonlar oluşturacak şekilde değiştirerek Firebase Authentication'yı özel bir kimlik doğrulama sistemiyle entegre edebilirsiniz. Uygulamanız bu jetonu alır ve Firebase ile kimlik doğrulamak için kullanır.
Modülünüzün (uygulama düzeyinde) Gradle dosyasında
(genellikle <project>/<app-module>/build.gradle.kts veya
<project>/<app-module>/build.gradle),
Android için Firebase Authentication kitaplığının bağımlılığını ekleyin. Kitaplık sürüm kontrolü için
Firebase Android BoM
kullanmanızı öneririz.
dependencies{// Import the BoM for the Firebase platformimplementation(platform("com.google.firebase:firebase-bom:34.2.0"))// Add the dependency for the Firebase Authentication library// When using the BoM, you don't specify versions in Firebase library dependenciesimplementation("com.google.firebase:firebase-auth")}
Firebase BoM kullanmamayı tercih ederseniz her Firebase kitaplık sürümünü bağımlılık satırında belirtmeniz gerekir.
Uygulamanızda birden fazla Firebase kitaplığı kullanıyorsanız kitaplık sürümlerini yönetmek için BoM kullanmanızı önemle tavsiye ederiz. Bu sayede tüm sürümlerin uyumlu olması sağlanır.
dependencies{// Add the dependency for the Firebase Authentication library// When NOT using the BoM, you must specify versions in Firebase library dependenciesimplementation("com.google.firebase:firebase-auth:24.0.1")}
Etkinliğinizi başlatırken kullanıcının oturumunun açık olup olmadığını kontrol edin:
Kotlin
publicoverridefunonStart(){super.onStart()// Check if user is signed in (non-null) and update UI accordingly.valcurrentUser=auth.currentUserupdateUI(currentUser)}
@OverridepublicvoidonStart(){super.onStart();// Check if user is signed in (non-null) and update UI accordingly.FirebaseUsercurrentUser=mAuth.getCurrentUser();updateUI(currentUser);}
Kullanıcılar uygulamanızda oturum açtığında oturum açma kimlik bilgilerini (örneğin, kullanıcı adı ve şifreleri) kimlik doğrulama sunucunuza gönderin. Sunucunuz kimlik bilgilerini kontrol eder ve geçerli olmaları durumunda özel bir jeton döndürür.
Kimlik doğrulama sunucunuzdan özel jetonu aldıktan sonra, kullanıcının oturumunu açmak için jetonu signInWithCustomToken'ya iletin:
Kotlin
customToken?.let{auth.signInWithCustomToken(it).addOnCompleteListener(this){task->
if(task.isSuccessful){// Sign in success, update UI with the signed-in user's informationLog.d(TAG,"signInWithCustomToken:success")valuser=auth.currentUserupdateUI(user)}else{// If sign in fails, display a message to the user.Log.w(TAG,"signInWithCustomToken:failure",task.exception)Toast.makeText(baseContext,"Authentication failed.",Toast.LENGTH_SHORT,).show()updateUI(null)}}}
mAuth.signInWithCustomToken(mCustomToken).addOnCompleteListener(this,newOnCompleteListener<AuthResult>(){@OverridepublicvoidonComplete(@NonNullTask<AuthResult>task){if(task.isSuccessful()){// Sign in success, update UI with the signed-in user's informationLog.d(TAG,"signInWithCustomToken:success");FirebaseUseruser=mAuth.getCurrentUser();updateUI(user);}else{// If sign in fails, display a message to the user.Log.w(TAG,"signInWithCustomToken:failure",task.getException());Toast.makeText(CustomAuthActivity.this,"Authentication failed.",Toast.LENGTH_SHORT).show();updateUI(null);}}});
Oturum açma işlemi başarılı olursa kullanıcı hesabının verilerini almak için AuthStateListenergetCurrentUser yöntemini kullanabilirsiniz.
Sonraki adımlar
Bir kullanıcı ilk kez oturum açtıktan sonra yeni bir kullanıcı hesabı oluşturulur ve kullanıcının oturum açtığı kimlik bilgilerine (kullanıcı adı ve şifre, telefon numarası veya kimlik doğrulama sağlayıcı bilgileri) bağlanır. Bu yeni hesap, Firebase projenizin bir parçası olarak depolanır ve kullanıcının nasıl oturum açtığına bakılmaksızın projenizdeki her uygulamada kullanıcıyı tanımlamak için kullanılabilir.
Firebase Realtime Database ve Cloud StorageGüvenlik Kurallarınızda, oturum açmış kullanıcının benzersiz kullanıcı kimliğini auth değişkeninden alabilir
ve kullanıcının hangi verilere erişebileceğini kontrol etmek için bu kimliği kullanabilirsiniz.
[[["Anlaması kolay","easyToUnderstand","thumb-up"],["Sorunumu çözdü","solvedMyProblem","thumb-up"],["Diğer","otherUp","thumb-up"]],[["İhtiyacım olan bilgiler yok","missingTheInformationINeed","thumb-down"],["Çok karmaşık / çok fazla adım var","tooComplicatedTooManySteps","thumb-down"],["Güncel değil","outOfDate","thumb-down"],["Çeviri sorunu","translationIssue","thumb-down"],["Örnek veya kod sorunu","samplesCodeIssue","thumb-down"],["Diğer","otherDown","thumb-down"]],["Son güncelleme tarihi: 2025-09-04 UTC."],[],[],null,["You can integrate Firebase Authentication with a custom authentication system by\nmodifying your authentication server to produce custom signed tokens when a user\nsuccessfully signs in. Your app receives this token and uses it to authenticate\nwith Firebase.\n\nBefore you begin\n\n1. If you haven't already, [add Firebase to your Android project](/docs/android/setup).\n2. 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 Firebase Authentication library for Android. We recommend using the [Firebase Android BoM](/docs/android/learn-more#bom) to control library versioning. \n\n ```carbon\n dependencies {\n // Import the BoM for the Firebase platform\n implementation(platform(\"com.google.firebase:firebase-bom:34.2.0\"))\n\n // Add the dependency for the Firebase Authentication library\n // When using the BoM, you don't specify versions in Firebase library dependencies\n implementation(\"com.google.firebase:firebase-auth\")\n }\n ```\n\n By using the [Firebase Android BoM](/docs/android/learn-more#bom),\n your app will always use compatible versions of Firebase Android libraries.\n *(Alternative)*\n Add Firebase library dependencies *without* using the BoM\n\n If you choose not to use the Firebase BoM, you must specify each Firebase library version\n in its dependency line.\n\n **Note that if you use *multiple* Firebase libraries in your app, we strongly\n recommend using the BoM to manage library versions, which ensures that all versions are\n compatible.** \n\n ```groovy\n dependencies {\n // Add the dependency for the Firebase Authentication library\n // When NOT using the BoM, you must specify versions in Firebase library dependencies\n implementation(\"com.google.firebase:firebase-auth:24.0.1\")\n }\n ```\n3. Get your project's server keys:\n 1. Go to the [Service Accounts](https://console.firebase.google.com/project/_/settings/serviceaccounts/adminsdk) page in your project's settings.\n 2. Click *Generate New Private Key* at the bottom of the *Firebase Admin SDK* section of the *Service Accounts* page.\n 3. The new service account's public/private key pair is automatically saved on your computer. Copy this file to your authentication server.\n\nAuthenticate with Firebase\n\n1. In your sign-in activity's `onCreate` method, get the shared instance of the `FirebaseAuth` object: \n\n Kotlin \n\n ```kotlin\n private lateinit var auth: FirebaseAuth\n // ...\n // Initialize Firebase Auth\n auth = Firebase.auth \n https://github.com/firebase/snippets-android/blob/b694d4dbd411d31be39655f47691c3e9f3529b03/auth/app/src/main/java/com/google/firebase/quickstart/auth/kotlin/CustomAuthActivity.kt#L27-L28\n ```\n\n Java \n\n ```java\n private FirebaseAuth mAuth;\n // ...\n // Initialize Firebase Auth\n mAuth = FirebaseAuth.getInstance();https://github.com/firebase/snippets-android/blob/b694d4dbd411d31be39655f47691c3e9f3529b03/auth/app/src/main/java/com/google/firebase/quickstart/auth/CustomAuthActivity.java#L48-L49\n ```\n2. When initializing your Activity, check to see if the user is currently signed in: \n\n Kotlin \n\n ```kotlin\n public override fun onStart() {\n super.onStart()\n // Check if user is signed in (non-null) and update UI accordingly.\n val currentUser = auth.currentUser\n updateUI(currentUser)\n }https://github.com/firebase/snippets-android/blob/b694d4dbd411d31be39655f47691c3e9f3529b03/auth/app/src/main/java/com/google/firebase/quickstart/auth/kotlin/CustomAuthActivity.kt#L33-L38\n ```\n\n Java \n\n ```java\n @Override\n public void onStart() {\n super.onStart();\n // Check if user is signed in (non-null) and update UI accordingly.\n FirebaseUser currentUser = mAuth.getCurrentUser();\n updateUI(currentUser);\n }https://github.com/firebase/snippets-android/blob/b694d4dbd411d31be39655f47691c3e9f3529b03/auth/app/src/main/java/com/google/firebase/quickstart/auth/CustomAuthActivity.java#L54-L60\n ```\n3. When users sign in to your app, send their sign-in credentials (for example, their username and password) to your authentication server. Your server checks the credentials and returns a [custom token](/docs/auth/admin/create-custom-tokens) if they are valid.\n4. After you receive the custom token from your authentication server, pass it to `signInWithCustomToken` to sign in the user: \n\n Kotlin \n\n ```kotlin\n customToken?.let {\n auth.signInWithCustomToken(it)\n .addOnCompleteListener(this) { task -\u003e\n if (task.isSuccessful) {\n // Sign in success, update UI with the signed-in user's information\n Log.d(TAG, \"signInWithCustomToken:success\")\n val user = auth.currentUser\n updateUI(user)\n } else {\n // If sign in fails, display a message to the user.\n Log.w(TAG, \"signInWithCustomToken:failure\", task.exception)\n Toast.makeText(\n baseContext,\n \"Authentication failed.\",\n Toast.LENGTH_SHORT,\n ).show()\n updateUI(null)\n }\n }\n }https://github.com/firebase/snippets-android/blob/b694d4dbd411d31be39655f47691c3e9f3529b03/auth/app/src/main/java/com/google/firebase/quickstart/auth/kotlin/CustomAuthActivity.kt#L44-L63\n ```\n\n Java \n\n ```java\n mAuth.signInWithCustomToken(mCustomToken)\n .addOnCompleteListener(this, new OnCompleteListener\u003cAuthResult\u003e() {\n @Override\n public void onComplete(@NonNull Task\u003cAuthResult\u003e task) {\n if (task.isSuccessful()) {\n // Sign in success, update UI with the signed-in user's information\n Log.d(TAG, \"signInWithCustomToken:success\");\n FirebaseUser user = mAuth.getCurrentUser();\n updateUI(user);\n } else {\n // If sign in fails, display a message to the user.\n Log.w(TAG, \"signInWithCustomToken:failure\", task.getException());\n Toast.makeText(CustomAuthActivity.this, \"Authentication failed.\",\n Toast.LENGTH_SHORT).show();\n updateUI(null);\n }\n }\n });https://github.com/firebase/snippets-android/blob/b694d4dbd411d31be39655f47691c3e9f3529b03/auth/app/src/main/java/com/google/firebase/quickstart/auth/CustomAuthActivity.java#L65-L82\n ```\n If sign-in succeeds, the `AuthStateListener` you can use the `getCurrentUser` method to get the user's account data.\n\nNext steps\n\nAfter a user signs in for the first time, a new user account is created and\nlinked to the credentials---that is, the user name and password, phone\nnumber, or auth provider information---the user signed in with. This new\naccount is stored as part of your Firebase project, and can be used to identify\na user across every app in your project, regardless of how the user signs in.\n\n- In your apps, you can get the user's basic profile information from the\n [`FirebaseUser`](/docs/reference/android/com/google/firebase/auth/FirebaseUser) object. See [Manage Users](/docs/auth/android/manage-users).\n\n- In your Firebase Realtime Database and Cloud Storage\n [Security Rules](/docs/database/security/user-security), you can\n get the signed-in user's unique user ID from the `auth` variable,\n and use it to control what data a user can access.\n\nYou can allow users to sign in to your app using multiple authentication\nproviders by [linking auth provider credentials to an\nexisting user account.](/docs/auth/android/account-linking)\n\nTo sign out a user, call [`signOut`](/docs/reference/android/com/google/firebase/auth/FirebaseAuth#signOut()): \n\nKotlin \n\n```kotlin\nFirebase.auth.signOut()https://github.com/firebase/snippets-android/blob/b694d4dbd411d31be39655f47691c3e9f3529b03/auth/app/src/main/java/com/google/firebase/quickstart/auth/kotlin/MainActivity.kt#L415-L415\n```\n\nJava \n\n```java\nFirebaseAuth.getInstance().signOut();https://github.com/firebase/snippets-android/blob/b694d4dbd411d31be39655f47691c3e9f3529b03/auth/app/src/main/java/com/google/firebase/quickstart/auth/MainActivity.java#L501-L501\n```"]]
