Android API31+版本Firebase邮箱登录失效问题求助

问题描述 #

开发基于Firebase的登录应用，已启用邮箱/密码和Google登录提供商。API 31以下设备上两种登录方式均正常工作；但API 31及以上设备中，Google登录正常，邮箱/密码登录完全无法使用。

已尝试操作 #

• 将所有依赖更新至最新版本
• 添加依赖 implementation 'androidx.work:work-runtime-ktx:2.7.0'
• 尝试了能找到的所有解决方案

相关代码 #

AuthenticationActivity代码 #

class AuthenticationActivity : AppCompatActivity() {

private lateinit var binding: ActivityAuthenticationBinding
private val viewModel by viewModels<LoginViewModel>()

companion object {
    const val TAG = "LoginFragment"
    const val SIGN_IN_RESULT_CODE = 1001
}

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    binding = ActivityAuthenticationBinding.inflate(layoutInflater)
    val view = binding.root
    setContentView(view)

    binding.authButton.setOnClickListener { launchSignInFlow() }

    viewModel.authenticationState.observe(this) { authenticationState ->
        when (authenticationState) {
            LoginViewModel.AuthenticationState.AUTHENTICATED -> switchActivities()
            else -> Log.e(
                TAG,
                "Authentication state that doesn't require any UI change $authenticationState"
            )
        }
    }
}

private fun launchSignInFlow() {
    val providers = arrayListOf(
        EmailBuilder().build(), GoogleBuilder().build()
    )

    startActivityForResult(
        AuthUI.getInstance().createSignInIntentBuilder().setAvailableProviders(providers)
            .build(), AuthenticationActivity.SIGN_IN_RESULT_CODE
    )
}

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)
    if (requestCode == SIGN_IN_RESULT_CODE) {
        val response = IdpResponse.fromResultIntent(data)
        if (resultCode == Activity.RESULT_OK) {
            startActivity(Intent(this@AuthenticationActivity, MyApp::class.java))
            finish()
            return
        } else {
            if (response == null) {
                Log.e("Login", "Login canceled by User")
                return
            }
            if (response.error!!.errorCode == ErrorCodes.NO_NETWORK) {
                Log.e("Login", "No Internet Connection")
                return
            }
            if (response.error!!.errorCode == ErrorCodes.UNKNOWN_ERROR) {
                Log.e("Login", "Unknown Error")
                return
            }
        }
        Log.e("Login", "Unknown sign in response")
    }
}

private fun switchActivities() {
    val switchActivityIntent = Intent(this, RemindersActivity::class.java)
    startActivity(switchActivityIntent)
}
}

通知相关代码 #

private fun sendNotification(triggeringGeofences: List<Geofence>) {

    triggeringGeofences.forEach {
        val requestId = it.requestId

        val remindersRepository: ReminderDataSource by inject()
        //Interaction to the repository has to be through a coroutine scope
        CoroutineScope(coroutineContext).launch(SupervisorJob()) {
            //get the reminder with the request id
            val result = remindersRepository.getReminder(requestId)
            if (result is Result.Success<ReminderDTO>) {
                val reminderDTO = result.data
                //send a notification to the user with the reminder details
                sendNotification(
                    this@GeofenceTransitionsJobIntentService, ReminderDataItem(
                        reminderDTO.title,
                        reminderDTO.description,
                        reminderDTO.location,
                        reminderDTO.latitude,
                        reminderDTO.longitude,
                        reminderDTO.id
                    )
                )
            }
        }
    }
}

关键提示 #

提示：Targeting S+（版本31及以上）要求创建PendingIntent时必须指定FLAG_IMMUTABLE或FLAG_MUTABLE。

解决方案 #

核心原因 #

Android 12（API 31）及以上版本强制要求创建PendingIntent时指定FLAG_IMMUTABLE或FLAG_MUTABLE。Firebase Auth UI处理邮箱登录时内部会创建PendingIntent，若未显式设置对应flag，会导致登录流程异常。

修复步骤 #

1. 修改登录流配置
   在launchSignInFlow方法中，为AuthUI的IntentBuilder添加setPendingIntentFlags：

private fun launchSignInFlow() {
    val providers = arrayListOf(
        EmailBuilder().build(), GoogleBuilder().build()
    )

    startActivityForResult(
        AuthUI.getInstance().createSignInIntentBuilder()
            .setAvailableProviders(providers)
            // 添加PendingIntent flag，适配API 31+
            .setPendingIntentFlags(PendingIntent.FLAG_IMMUTABLE)
            .build(), AuthenticationActivity.SIGN_IN_RESULT_CODE
    )
}

2. 确认依赖版本
   确保Firebase Auth UI依赖为最新版本，避免版本兼容问题：

// Module级别build.gradle
implementation 'com.firebaseui:firebase-ui-auth:8.0.2' // 替换为最新版本

3. 检查其他PendingIntent创建场景
   如果代码中还有其他创建PendingIntent的地方（如通知逻辑），同样需要添加对应flag。例如创建通知的PendingIntent时：

val pendingIntent = PendingIntent.getActivity(
    context,
    requestCode,
    intent,
    PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
)

内容的提问来源于stack exchange，提问作者YaSsEr NaBiL