Merge "UDFPS Enrollment Refactor (5/N)" into main

src/com/android/settings/biometrics/fingerprint2/data/model/EnrollStageModel.kt

@@ -14,38 +14,38 @@
  * limitations under the License.
  */
 
-package com.android.settings.biometrics.fingerprint2.lib.model
+package com.android.settings.biometrics.fingerprint2.data.model
 
 /**
  * A view model that describes the various stages of UDFPS Enrollment. This stages typically update
  * the enrollment UI in a major way, such as changing the lottie animation or changing the location
  * of the where the user should press their fingerprint
  */
-sealed class StageViewModel {
+sealed class EnrollStageModel {
   /** Unknown stage */
-  data object Unknown : StageViewModel()
+  data object Unknown : EnrollStageModel()
 
   /** This is the stage that moves the fingerprint icon around during enrollment. */
-  data object Guided : StageViewModel()
+  data object Guided : EnrollStageModel()
 
   /** The center stage is the initial stage of enrollment. */
-  data object Center : StageViewModel()
+  data object Center : EnrollStageModel()
 
   /**
    * Fingerprint stage of enrollment. Typically there is some sort of indication that a user should
    * be using their finger tip to enroll.
    */
-  data object Fingertip : StageViewModel()
+  data object Fingertip : EnrollStageModel()
 
   /**
    * Left edge stage of enrollment. Typically there is an indication that a user should be using the
    * left edge of their fingerprint.
    */
-  data object LeftEdge : StageViewModel()
+  data object LeftEdge : EnrollStageModel()
 
   /**
    * Right edge stage of enrollment. Typically there is an indication that a user should be using
    * the right edge of their fingerprint.
    */
-  data object RightEdge : StageViewModel()
+  data object RightEdge : EnrollStageModel()
 }

src/com/android/settings/biometrics/fingerprint2/domain/interactor/EnrollStageInteractor.kt

@@ -16,11 +16,11 @@
 
 package com.android.settings.biometrics.fingerprint2.domain.interactor
 
-import com.android.settings.biometrics.fingerprint2.lib.model.StageViewModel
+import com.android.settings.biometrics.fingerprint2.data.model.EnrollStageModel
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.flowOf
 
-typealias EnrollStageThresholds = Map<Float, StageViewModel>
+typealias EnrollStageThresholds = Map<Float, EnrollStageModel>
 
 /** Interactor that provides enroll stages for enrollment. */
 interface EnrollStageInteractor {
@@ -33,11 +33,11 @@ class EnrollStageInteractorImpl() : EnrollStageInteractor {
   override val enrollStageThresholds: Flow<EnrollStageThresholds> =
     flowOf(
       mapOf(
-        0.0f to StageViewModel.Center,
+        0.0f to EnrollStageModel.Center,
-        0.25f to StageViewModel.Guided,
+        0.25f to EnrollStageModel.Guided,
-        0.5f to StageViewModel.Fingertip,
+        0.5f to EnrollStageModel.Fingertip,
-        0.75f to StageViewModel.LeftEdge,
+        0.75f to EnrollStageModel.LeftEdge,
-        0.875f to StageViewModel.RightEdge,
+        0.875f to EnrollStageModel.RightEdge,
       )
     )
 }

src/com/android/settings/biometrics/fingerprint2/domain/interactor/OrientationInteractor.kt

@@ -42,6 +42,7 @@ interface OrientationInteractor {
    * A flow that contains the rotation info matched against the def [config_reverseDefaultRotation]
    */
   val rotationFromDefault: Flow<Int>
+
   /**
    * A Helper function that computes rotation if device is in
    * [R.bool.config_reverseDefaultConfigRotation]

src/com/android/settings/biometrics/fingerprint2/domain/interactor/UdfpsEnrollInteractor.kt

@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.biometrics.fingerprint2.domain.interactor
+
+import android.graphics.PointF
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.update
+
+/**
+ * This interactor provides information about the current offset of the sensor for guided enrollment
+ * on UDFPS devices.
+ */
+interface UdfpsEnrollInteractor {
+  /** Indicates at which step a UDFPS enrollment is in. */
+  fun onEnrollmentStep(stepsRemaining: Int, totalStep: Int)
+
+  /** Indicates if guided enrollment should be enabled or not. */
+  fun updateGuidedEnrollment(enabled: Boolean)
+
+  /**
+   * A flow indicating how much the sensor image drawable should be offset for guided enrollment. A
+   * null point indicates that the icon should be in its default position.
+   */
+  val guidedEnrollmentOffset: Flow<PointF>
+}
+
+/** Keeps track of which guided enrollment point we should be using */
+class UdfpsEnrollInteractorImpl(
+  pixelsPerMillimeter: Float,
+  accessibilityInteractor: AccessibilityInteractor,
+) : UdfpsEnrollInteractor {
+
+  private var isGuidedEnrollment = MutableStateFlow(false)
+  // Number of pixels per mm
+  val px = pixelsPerMillimeter
+  private val guidedEnrollmentPoints: MutableList<PointF> =
+    mutableListOf(
+      PointF(2.00f * px, 0.00f * px),
+      PointF(0.87f * px, -2.70f * px),
+      PointF(-1.80f * px, -1.31f * px),
+      PointF(-1.80f * px, 1.31f * px),
+      PointF(0.88f * px, 2.70f * px),
+      PointF(3.94f * px, -1.06f * px),
+      PointF(2.90f * px, -4.14f * px),
+      PointF(-0.52f * px, -5.95f * px),
+      PointF(-3.33f * px, -3.33f * px),
+      PointF(-3.99f * px, -0.35f * px),
+      PointF(-3.62f * px, 2.54f * px),
+      PointF(-1.49f * px, 5.57f * px),
+      PointF(2.29f * px, 4.92f * px),
+      PointF(3.82f * px, 1.78f * px),
+    )
+
+  override fun onEnrollmentStep(stepsRemaining: Int, totalStep: Int) {
+    val index = (totalStep - stepsRemaining) % guidedEnrollmentPoints.size
+    _guidedEnrollment.update { guidedEnrollmentPoints[index] }
+  }
+
+  override fun updateGuidedEnrollment(enabled: Boolean) {
+    isGuidedEnrollment.update { enabled }
+  }
+
+  private val _guidedEnrollment = MutableStateFlow(PointF(0f, 0f))
+  override val guidedEnrollmentOffset: Flow<PointF> =
+    combine(
+      _guidedEnrollment,
+      accessibilityInteractor.isAccessibilityEnabled,
+      isGuidedEnrollment,
+    ) { point, accessibilityEnabled, guidedEnrollmentEnabled ->
+      if (accessibilityEnabled || !guidedEnrollmentEnabled) {
+        return@combine PointF(0f, 0f)
+      } else {
+        return@combine PointF(point.x * SCALE, point.y * SCALE)
+      }
+    }
+
+  companion object {
+    private const val SCALE = 0.5f
+  }
+}

src/com/android/settings/biometrics/fingerprint2/ui/enrollment/activity/FingerprintEnrollmentV2Activity.kt

@@ -24,6 +24,7 @@ import android.hardware.fingerprint.FingerprintManager
 import android.os.Bundle
 import android.os.Vibrator
 import android.util.Log
+import android.util.TypedValue
 import android.view.accessibility.AccessibilityManager
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.fragment.app.Fragment
@@ -54,6 +55,8 @@ import com.android.settings.biometrics.fingerprint2.domain.interactor.FoldStateI
 import com.android.settings.biometrics.fingerprint2.domain.interactor.FoldStateInteractorImpl
 import com.android.settings.biometrics.fingerprint2.domain.interactor.OrientationInteractor
 import com.android.settings.biometrics.fingerprint2.domain.interactor.OrientationInteractorImpl
+import com.android.settings.biometrics.fingerprint2.domain.interactor.UdfpsEnrollInteractor
+import com.android.settings.biometrics.fingerprint2.domain.interactor.UdfpsEnrollInteractorImpl
 import com.android.settings.biometrics.fingerprint2.domain.interactor.VibrationInteractor
 import com.android.settings.biometrics.fingerprint2.domain.interactor.VibrationInteractorImpl
 import com.android.settings.biometrics.fingerprint2.lib.model.Default
@@ -89,6 +92,7 @@ import com.android.settings.biometrics.fingerprint2.ui.enrollment.viewmodel.Fing
 import com.android.settings.biometrics.fingerprint2.ui.enrollment.viewmodel.FingerprintNavigationViewModel
 import com.android.settings.biometrics.fingerprint2.ui.enrollment.viewmodel.FingerprintScrollViewModel
 import com.android.settings.biometrics.fingerprint2.ui.enrollment.viewmodel.GatekeeperInfo
+import com.android.settings.biometrics.fingerprint2.ui.enrollment.viewmodel.Transition
 import com.android.settings.flags.Flags
 import com.android.settings.password.ChooseLockGeneric
 import com.android.settings.password.ChooseLockSettingsHelper
@@ -116,6 +120,7 @@ class FingerprintEnrollmentV2Activity : FragmentActivity() {
   private lateinit var foldStateInteractor: FoldStateInteractor
   private lateinit var orientationInteractor: OrientationInteractor
   private lateinit var displayDensityInteractor: DisplayDensityInteractor
+  private lateinit var udfpsEnrollInteractor: UdfpsEnrollInteractor
   private lateinit var fingerprintScrollViewModel: FingerprintScrollViewModel
   private lateinit var backgroundViewModel: BackgroundViewModel
   private lateinit var fingerprintFlowViewModel: FingerprintFlowViewModel
@@ -256,6 +261,15 @@ class FingerprintEnrollmentV2Activity : FragmentActivity() {
           fingerprintManager,
           Settings,
         )
+    val accessibilityInteractor =
+      AccessibilityInteractorImpl(
+        getSystemService(AccessibilityManager::class.java)!!,
+        lifecycleScope,
+      )
+
+    val pixelsPerMillimeter =
+      TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_MM, 1f, context.resources.displayMetrics)
+    udfpsEnrollInteractor = UdfpsEnrollInteractorImpl(pixelsPerMillimeter, accessibilityInteractor)
 
     val fingerprintManagerInteractor =
       FingerprintManagerInteractorImpl(
@@ -273,12 +287,6 @@ class FingerprintEnrollmentV2Activity : FragmentActivity() {
 
     val hasConfirmedDeviceCredential = gatekeeperInfo is GatekeeperInfo.GatekeeperPasswordInfo
 
-    val accessibilityInteractor =
-      AccessibilityInteractorImpl(
-        getSystemService(AccessibilityManager::class.java)!!,
-        lifecycleScope,
-      )
-
     navigationViewModel =
       ViewModelProvider(
         this,
@@ -384,6 +392,7 @@ class FingerprintEnrollmentV2Activity : FragmentActivity() {
           orientationInteractor,
           backgroundViewModel,
           fingerprintSensorRepo,
+          udfpsEnrollInteractor,
         ),
       )[UdfpsViewModel::class.java]
 
@@ -435,17 +444,17 @@ class FingerprintEnrollmentV2Activity : FragmentActivity() {
                   else -> FingerprintEnrollEnrollingV2Fragment()
                 }
               }
-              Introduction -> FingerprintEnrollIntroV2Fragment()
+              is Introduction -> FingerprintEnrollIntroV2Fragment()
               else -> null
             }
 
           if (theClass != null) {
-            supportFragmentManager.fragments.onEach { fragment ->
-              supportFragmentManager.beginTransaction().remove(fragment).commit()
-            }
-
             supportFragmentManager
               .beginTransaction()
+              .setCustomAnimations(
+                step.enterTransition.toAnimation(),
+                step.exitTransition.toAnimation(),
+              )
               .setReorderingAllowed(true)
               .add(R.id.fragment_container_view, theClass::class.java, null)
               .commit()
@@ -512,3 +521,12 @@ class FingerprintEnrollmentV2Activity : FragmentActivity() {
     }
   }
 }
+
+private fun Transition.toAnimation(): Int {
+  return when (this) {
+    Transition.EnterFromLeft -> com.google.android.setupdesign.R.anim.sud_slide_back_in
+    Transition.EnterFromRight -> com.google.android.setupdesign.R.anim.sud_slide_next_in
+    Transition.ExitToLeft -> com.google.android.setupdesign.R.anim.sud_slide_next_out
+    Transition.ExitToRight -> com.google.android.setupdesign.R.anim.sud_slide_back_out
+  }
+}

src/com/android/settings/biometrics/fingerprint2/ui/enrollment/modules/enrolling/udfps/ui/fragment/UdfpsEnrollFragment.kt

@@ -32,12 +32,12 @@ import androidx.lifecycle.repeatOnLifecycle
 import com.airbnb.lottie.LottieAnimationView
 import com.airbnb.lottie.LottieCompositionFactory
 import com.android.settings.R
+import com.android.settings.biometrics.fingerprint2.data.model.EnrollStageModel
 import com.android.settings.biometrics.fingerprint2.lib.model.FingerEnrollState
-import com.android.settings.biometrics.fingerprint2.lib.model.StageViewModel
 import com.android.settings.biometrics.fingerprint2.ui.enrollment.modules.enrolling.common.widget.FingerprintErrorDialog
-import com.android.settings.biometrics.fingerprint2.ui.enrollment.modules.enrolling.udfps.ui.viewmodel.DescriptionText
+import com.android.settings.biometrics.fingerprint2.ui.enrollment.modules.enrolling.udfps.ui.model.DescriptionText
+import com.android.settings.biometrics.fingerprint2.ui.enrollment.modules.enrolling.udfps.ui.model.HeaderText
 import com.android.settings.biometrics.fingerprint2.ui.enrollment.modules.enrolling.udfps.ui.viewmodel.EducationAnimationModel
-import com.android.settings.biometrics.fingerprint2.ui.enrollment.modules.enrolling.udfps.ui.viewmodel.HeaderText
 import com.android.settings.biometrics.fingerprint2.ui.enrollment.modules.enrolling.udfps.ui.viewmodel.UdfpsViewModel
 import com.android.settings.biometrics.fingerprint2.ui.enrollment.modules.enrolling.udfps.ui.widget.UdfpsEnrollViewV2
 import com.android.settings.biometrics.fingerprint2.ui.enrollment.viewmodel.FingerprintNavigationStep
@@ -83,6 +83,8 @@ class UdfpsEnrollFragment() : Fragment(R.layout.fingerprint_v2_udfps_enroll_enro
     window.statusBarColor = color
     view.setBackgroundColor(color)
 
+    udfpsEnrollView.setFinishAnimationCompleted { viewModel.finishedSuccessfully() }
+
     viewLifecycleOwner.lifecycleScope.launch {
       repeatOnLifecycle(Lifecycle.State.RESUMED) {
         launch {
@@ -159,7 +161,14 @@ class UdfpsEnrollFragment() : Fragment(R.layout.fingerprint_v2_udfps_enroll_enro
         }
 
         viewLifecycleOwner.lifecycleScope.launch {
-          viewModel.enrollStage.collect { udfpsEnrollView.updateStage(it) }
+          viewModel.guidedEnrollment.collect {
+            glifLayout.post { udfpsEnrollView.updateGuidedEnrollment(it) }
+          }
+        }
+        viewLifecycleOwner.lifecycleScope.launch {
+          viewModel.guidedEnrollmentSaved.collect {
+            glifLayout.post { udfpsEnrollView.onGuidedPointSaved(it) }
+          }
         }
       }
     }
@@ -175,35 +184,35 @@ class UdfpsEnrollFragment() : Fragment(R.layout.fingerprint_v2_udfps_enroll_enro
   }
 
   private fun HeaderText.toResource(): Int {
-    return when (this.stageViewModel) {
+    return when (this.enrollStageModel) {
-      StageViewModel.Center,
+      EnrollStageModel.Center,
-      StageViewModel.Guided,
+      EnrollStageModel.Guided,
-      StageViewModel.Fingertip,
+      EnrollStageModel.Fingertip,
-      StageViewModel.Unknown -> R.string.security_settings_udfps_enroll_fingertip_title
+      EnrollStageModel.Unknown -> R.string.security_settings_udfps_enroll_fingertip_title
-      StageViewModel.LeftEdge -> R.string.security_settings_udfps_enroll_left_edge_title
+      EnrollStageModel.LeftEdge -> R.string.security_settings_udfps_enroll_left_edge_title
-      StageViewModel.RightEdge -> R.string.security_settings_udfps_enroll_right_edge_title
+      EnrollStageModel.RightEdge -> R.string.security_settings_udfps_enroll_right_edge_title
     }
   }
 
   private fun DescriptionText.toResource(): Int? {
-    return when (this.stageViewModel) {
+    return when (this.enrollStageModel) {
-      StageViewModel.Center,
+      EnrollStageModel.Center,
-      StageViewModel.Guided,
+      EnrollStageModel.Guided,
-      StageViewModel.Fingertip,
+      EnrollStageModel.Fingertip,
-      StageViewModel.LeftEdge,
+      EnrollStageModel.LeftEdge,
-      StageViewModel.RightEdge -> null
+      EnrollStageModel.RightEdge -> null
-      StageViewModel.Unknown -> R.string.security_settings_udfps_enroll_start_message
+      EnrollStageModel.Unknown -> R.string.security_settings_udfps_enroll_start_message
     }
   }
 
   private fun EducationAnimationModel.toResource(): Int? {
-    return when (this.stageViewModel) {
+    return when (this.enrollStageModel) {
-      StageViewModel.Center,
+      EnrollStageModel.Center,
-      StageViewModel.Guided -> R.raw.udfps_center_hint_lottie
+      EnrollStageModel.Guided -> R.raw.udfps_center_hint_lottie
-      StageViewModel.Fingertip -> R.raw.udfps_tip_hint_lottie
+      EnrollStageModel.Fingertip -> R.raw.udfps_tip_hint_lottie
-      StageViewModel.LeftEdge -> R.raw.udfps_left_edge_hint_lottie
+      EnrollStageModel.LeftEdge -> R.raw.udfps_left_edge_hint_lottie
-      StageViewModel.RightEdge -> R.raw.udfps_right_edge_hint_lottie
+      EnrollStageModel.RightEdge -> R.raw.udfps_right_edge_hint_lottie
-      StageViewModel.Unknown -> null
+      EnrollStageModel.Unknown -> null
     }
   }
 

src/com/android/settings/biometrics/fingerprint2/ui/enrollment/modules/enrolling/udfps/ui/model/DescriptionText.kt

@@ -14,13 +14,13 @@
  * limitations under the License.
  */
 
-package com.android.settings.biometrics.fingerprint2.ui.enrollment.modules.enrolling.udfps.ui.viewmodel
+package com.android.settings.biometrics.fingerprint2.ui.enrollment.modules.enrolling.udfps.ui.model
 
-import com.android.settings.biometrics.fingerprint2.lib.model.StageViewModel
+import com.android.settings.biometrics.fingerprint2.data.model.EnrollStageModel
 
 /** Represents the description text for UDFPS enrollment */
 data class DescriptionText(
   val isSuw: Boolean,
   val isAccessibility: Boolean,
-  val stageViewModel: StageViewModel,
+  val enrollStageModel: EnrollStageModel,
 )

src/com/android/settings/biometrics/fingerprint2/ui/enrollment/modules/enrolling/udfps/ui/model/HeaderText.kt

@@ -14,13 +14,13 @@
  * limitations under the License.
  */
 
-package com.android.settings.biometrics.fingerprint2.ui.enrollment.modules.enrolling.udfps.ui.viewmodel
+package com.android.settings.biometrics.fingerprint2.ui.enrollment.modules.enrolling.udfps.ui.model
 
-import com.android.settings.biometrics.fingerprint2.lib.model.StageViewModel
+import com.android.settings.biometrics.fingerprint2.data.model.EnrollStageModel
 
 /** Represents the header text for UDFPS enrollment */
 data class HeaderText(
   val isSuw: Boolean,
   val isAccessibility: Boolean,
-  val stageViewModel: StageViewModel,
+  val enrollStageModel: EnrollStageModel,
 )

src/com/android/settings/biometrics/fingerprint2/ui/enrollment/modules/enrolling/udfps/ui/viewmodel/EducationAnimationModel.kt

@@ -16,11 +16,11 @@
 
 package com.android.settings.biometrics.fingerprint2.ui.enrollment.modules.enrolling.udfps.ui.viewmodel
 
-import com.android.settings.biometrics.fingerprint2.lib.model.StageViewModel
+import com.android.settings.biometrics.fingerprint2.data.model.EnrollStageModel
 
 /** Represents the lottie for UDFPS enrollment */
 data class EducationAnimationModel(
   val isSuw: Boolean,
   val isAccessibility: Boolean,
-  val stageViewModel: StageViewModel,
+  val enrollStageModel: EnrollStageModel,
 )

src/com/android/settings/biometrics/fingerprint2/ui/enrollment/modules/enrolling/udfps/ui/viewmodel/UdfpsViewModel.kt

@@ -17,20 +17,24 @@
 package com.android.settings.biometrics.fingerprint2.ui.enrollment.modules.enrolling.udfps.ui.viewmodel
 
 import android.graphics.Point
+import android.graphics.PointF
 import android.view.Surface
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.ViewModelProvider
 import androidx.lifecycle.viewModelScope
 import com.android.settings.biometrics.fingerprint2.data.repository.FingerprintSensorRepository
+import com.android.settings.biometrics.fingerprint2.data.model.EnrollStageModel
 import com.android.settings.biometrics.fingerprint2.data.repository.SimulatedTouchEventsRepository
 import com.android.settings.biometrics.fingerprint2.domain.interactor.DebuggingInteractor
 import com.android.settings.biometrics.fingerprint2.domain.interactor.DisplayDensityInteractor
 import com.android.settings.biometrics.fingerprint2.domain.interactor.EnrollStageInteractor
 import com.android.settings.biometrics.fingerprint2.domain.interactor.FingerprintVibrationEffects
 import com.android.settings.biometrics.fingerprint2.domain.interactor.OrientationInteractor
+import com.android.settings.biometrics.fingerprint2.domain.interactor.UdfpsEnrollInteractor
 import com.android.settings.biometrics.fingerprint2.domain.interactor.VibrationInteractor
 import com.android.settings.biometrics.fingerprint2.lib.model.FingerEnrollState
-import com.android.settings.biometrics.fingerprint2.lib.model.StageViewModel
+import com.android.settings.biometrics.fingerprint2.ui.enrollment.modules.enrolling.udfps.ui.model.DescriptionText
+import com.android.settings.biometrics.fingerprint2.ui.enrollment.modules.enrolling.udfps.ui.model.HeaderText
 import com.android.settings.biometrics.fingerprint2.ui.enrollment.viewmodel.BackgroundViewModel
 import com.android.settings.biometrics.fingerprint2.ui.enrollment.viewmodel.FingerprintAction
 import com.android.settings.biometrics.fingerprint2.ui.enrollment.viewmodel.FingerprintEnrollEnrollingViewModel
@@ -61,9 +65,11 @@ class UdfpsViewModel(
   orientationInteractor: OrientationInteractor,
   backgroundViewModel: BackgroundViewModel,
   sensorRepository: FingerprintSensorRepository,
+  udfpsEnrollInteractor: UdfpsEnrollInteractor,
 ) : ViewModel() {
 
   private val isSetupWizard = flowOf(false)
+  private var shouldResetErollment = false
 
   private var _enrollState: Flow<FingerEnrollState?> =
     fingerprintEnrollEnrollingViewModel.enrollFlow
@@ -112,6 +118,17 @@ class UdfpsViewModel(
     }
   }
 
+  /**
+   * This indicates at which point the UI should offset the fingerprint sensor icon for guided
+   * enrollment.
+   */
+  val guidedEnrollment: Flow<PointF> =
+    udfpsEnrollInteractor.guidedEnrollmentOffset.distinctUntilChanged()
+
+  /** The saved version of [guidedEnrollment] */
+  val guidedEnrollmentSaved: Flow<PointF> =
+    guidedEnrollment.shareIn(this.viewModelScope, SharingStarted.Eagerly, replay = 1)
+
   /**
    * This is the saved progress, this is for when views are recreated and need saved state for the
    * first time.
@@ -132,13 +149,13 @@ class UdfpsViewModel(
       }
     }
 
-  /** Determines the current [StageViewModel] enrollment is in */
+  /** Determines the current [EnrollStageModel] enrollment is in */
-  val enrollStage: Flow<StageViewModel> =
+  private val enrollStage: Flow<EnrollStageModel> =
     combine(enrollStageInteractor.enrollStageThresholds, enrollState) { thresholds, event ->
         if (event is FingerEnrollState.EnrollProgress) {
           val progress =
             (event.totalStepsRequired - event.remainingSteps).toFloat() / event.totalStepsRequired
-          var stageToReturn: StageViewModel = StageViewModel.Center
+          var stageToReturn: EnrollStageModel = EnrollStageModel.Center
           thresholds.forEach { (threshold, stage) ->
             if (progress < threshold) {
               return@forEach
@@ -153,6 +170,40 @@ class UdfpsViewModel(
       .filterNotNull()
       .shareIn(this.viewModelScope, SharingStarted.Eagerly, replay = 1)
 
+  init {
+    viewModelScope.launch {
+      enrollState
+        .combine(accessibilityEnabled) { event, isEnabled -> Pair(event, isEnabled) }
+        .collect {
+          if (
+            when (it.first) {
+              is FingerEnrollState.EnrollError -> true
+              is FingerEnrollState.EnrollHelp -> it.second
+              is FingerEnrollState.EnrollProgress -> true
+              else -> false
+            }
+          ) {
+            vibrate(it.first)
+          }
+        }
+    }
+    viewModelScope.launch {
+      enrollStage.collect {
+        udfpsEnrollInteractor.updateGuidedEnrollment(it is EnrollStageModel.Guided)
+      }
+    }
+
+    viewModelScope.launch {
+      enrollState.filterIsInstance<FingerEnrollState.EnrollProgress>().collect {
+        udfpsEnrollInteractor.onEnrollmentStep(it.remainingSteps, it.totalStepsRequired)
+      }
+    }
+
+    viewModelScope.launch {
+      backgroundViewModel.background.filter { true }.collect { didGoToBackground() }
+    }
+  }
+
   /** Indicates if we should show the lottie. */
   val shouldShowLottie: Flow<Boolean> =
     combine(
@@ -183,7 +234,7 @@ class UdfpsViewModel(
       }
       .shareIn(this.viewModelScope, SharingStarted.Eagerly, replay = 1)
 
-  private val shouldClearDescriptionText = enrollStage.map { it is StageViewModel.Unknown }
+  private val shouldClearDescriptionText = enrollStage.map { it is EnrollStageModel.Unknown }
 
   /** The description text for UDFPS enrollment */
   val descriptionText: Flow<DescriptionText?> =
@@ -202,6 +253,10 @@ class UdfpsViewModel(
 
   /** Indicates if the consumer is ready for enrollment */
   fun readyForEnrollment() {
+    if (shouldResetErollment) {
+      shouldResetErollment = false
+      _enrollState = fingerprintEnrollEnrollingViewModel.enrollFlow
+    }
     fingerprintEnrollEnrollingViewModel.canEnroll()
   }
 
@@ -237,8 +292,12 @@ class UdfpsViewModel(
   }
 
   private fun doReset() {
-    /** Indicates if the icon should be animating or not */
     _enrollState = fingerprintEnrollEnrollingViewModel.enrollFlow
+    progressSaved =
+      enrollState
+        .filterIsInstance<FingerEnrollState.EnrollProgress>()
+        .filterNotNull()
+        .shareIn(this.viewModelScope, SharingStarted.Eagerly, replay = 1)
   }
 
   /** The lottie that should be shown for UDFPS Enrollment */
@@ -272,6 +331,7 @@ class UdfpsViewModel(
     private val orientationInteractor: OrientationInteractor,
     private val backgroundViewModel: BackgroundViewModel,
     private val sensorRepository: FingerprintSensorRepository,
+    private val udfpsEnrollInteractor: UdfpsEnrollInteractor,
   ) : ViewModelProvider.Factory {
 
     @Suppress("UNCHECKED_CAST")
@@ -287,6 +347,7 @@ class UdfpsViewModel(
         orientationInteractor,
         backgroundViewModel,
         sensorRepository,
+        udfpsEnrollInteractor,
       )
         as T
     }

src/com/android/settings/biometrics/fingerprint2/ui/enrollment/modules/enrolling/udfps/ui/widget/UdfpsEnrollHelperV2.kt

@@ -1,89 +0,0 @@
-/*
- * Copyright (C) 2024 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.settings.biometrics.fingerprint2.ui.enrollment.modules.enrolling.udfps.ui.widget
-
-import android.content.Context
-import android.graphics.PointF
-import android.util.TypedValue
-import android.view.accessibility.AccessibilityManager
-import com.android.settings.biometrics.fingerprint2.lib.model.StageViewModel
-
-/** Keeps track of which guided enrollment point we should be using */
-class UdfpsEnrollHelperV2(private val mContext: Context) {
-
-  private var isGuidedEnrollment: Boolean = false
-  private val accessibilityEnabled: Boolean
-  private val guidedEnrollmentPoints: MutableList<PointF>
-  /** The current index of [guidedEnrollmentPoints] for the guided enrollment. */
-  private var index = 0
-
-  init {
-    val am = mContext.getSystemService(AccessibilityManager::class.java)
-    accessibilityEnabled = am!!.isEnabled
-    guidedEnrollmentPoints = ArrayList()
-
-    // Number of pixels per mm
-    val px =
-      TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_MM, 1f, mContext.resources.displayMetrics)
-    guidedEnrollmentPoints.add(PointF(2.00f * px, 0.00f * px))
-    guidedEnrollmentPoints.add(PointF(0.87f * px, -2.70f * px))
-    guidedEnrollmentPoints.add(PointF(-1.80f * px, -1.31f * px))
-    guidedEnrollmentPoints.add(PointF(-1.80f * px, 1.31f * px))
-    guidedEnrollmentPoints.add(PointF(0.88f * px, 2.70f * px))
-    guidedEnrollmentPoints.add(PointF(3.94f * px, -1.06f * px))
-    guidedEnrollmentPoints.add(PointF(2.90f * px, -4.14f * px))
-    guidedEnrollmentPoints.add(PointF(-0.52f * px, -5.95f * px))
-    guidedEnrollmentPoints.add(PointF(-3.33f * px, -3.33f * px))
-    guidedEnrollmentPoints.add(PointF(-3.99f * px, -0.35f * px))
-    guidedEnrollmentPoints.add(PointF(-3.62f * px, 2.54f * px))
-    guidedEnrollmentPoints.add(PointF(-1.49f * px, 5.57f * px))
-    guidedEnrollmentPoints.add(PointF(2.29f * px, 4.92f * px))
-    guidedEnrollmentPoints.add(PointF(3.82f * px, 1.78f * px))
-  }
-
-  /**
-   * This indicates whether we should be offsetting the enrollment icon based on
-   * [guidedEnrollmentPoints]
-   */
-  fun onUpdateStage(stage: StageViewModel) {
-    this.isGuidedEnrollment = stage is StageViewModel.Guided
-  }
-
-  /** Updates [index] to be used by [guidedEnrollmentPoints] */
-  fun onEnrollmentProgress(remaining: Int, totalSteps: Int) {
-    index = totalSteps - remaining
-  }
-
-  /**
-   * Returns the current guided enrollment point, or (0,0) if we are not in guided enrollment or are
-   * in accessibility.
-   */
-  val guidedEnrollmentLocation: PointF?
-    get() {
-      if (accessibilityEnabled || !isGuidedEnrollment) {
-        return null
-      }
-      val scale = SCALE
-      val originalPoint = guidedEnrollmentPoints[index % guidedEnrollmentPoints.size]
-      return PointF(originalPoint.x * scale, originalPoint.y * scale)
-    }
-
-  companion object {
-    private const val TAG = "UdfpsEnrollHelperV2"
-    private const val SCALE = 0.5f
-  }
-}

src/com/android/settings/biometrics/fingerprint2/ui/enrollment/modules/enrolling/udfps/ui/widget/UdfpsEnrollIconV2.kt

@@ -24,6 +24,7 @@ import android.graphics.Canvas
 import android.graphics.ColorFilter
 import android.graphics.Paint
 import android.graphics.PixelFormat
+import android.graphics.PointF
 import android.graphics.Rect
 import android.graphics.RectF
 import android.graphics.drawable.Drawable
@@ -37,7 +38,6 @@ import androidx.core.animation.addListener
 import androidx.core.graphics.toRect
 import androidx.core.graphics.toRectF
 import com.android.settings.R
-import com.android.settings.biometrics.fingerprint2.lib.model.StageViewModel
 import kotlin.math.sin
 
 /**
@@ -51,11 +51,11 @@ class UdfpsEnrollIconV2 internal constructor(context: Context, attrs: AttributeS
   private val fingerprintDrawable: ShapeDrawable
   private val sensorOutlinePaint: Paint
   private val blueFill: Paint
-  private val helper = UdfpsEnrollHelperV2(context)
   @ColorInt private var enrollIconColor = 0
   @ColorInt private var movingTargetFill = 0
   private var currentScale = 1.0f
   private var alpha = 0
+  private var guidedEnrollmentOffset: PointF? = null
 
   /**
    * This is the physical location of the sensor. This rect will be updated by [drawSensorRectAt]
@@ -143,45 +143,6 @@ class UdfpsEnrollIconV2 internal constructor(context: Context, attrs: AttributeS
     invalidateSelf()
   }
 
-  /** Update the progress of the icon */
-  fun onEnrollmentProgress(remaining: Int, totalSteps: Int, isRecreating: Boolean = false) {
-    restoreAnimationTime()
-    // If we are restoring this view from a saved state, set animation duration to 0 to avoid
-    // animating progress that has already occurred.
-    if (isRecreating) {
-      setAnimationTimeToZero()
-    } else {
-      restoreAnimationTime()
-    }
-
-    helper.onEnrollmentProgress(remaining, totalSteps)
-    val offset = helper.guidedEnrollmentLocation
-    val currentBounds = getCurrLocation().toRect()
-    if (offset != null) {
-      // This is the desired location of the sensor rect, the [EnrollHelper]
-      // offsets the initial sensor rect by a bit to get the user to move their finger a bit more.
-      val targetRect = Rect(sensorRectBounds).toRectF()
-      targetRect.offset(offset.x, offset.y)
-      val shouldAnimateMovement =
-        !currentBounds.equals(targetRect) && offset.x != 0f && offset.y != 0f
-      if (shouldAnimateMovement) {
-        targetAnimatorSet?.cancel()
-        animateMovement(currentBounds, targetRect, true)
-      }
-    } else {
-      // If we are not offsetting the sensor, move it back to its original place
-      animateMovement(currentBounds, sensorRectBounds.toRectF(), false)
-    }
-
-    invalidateSelf()
-  }
-
-  /** Update the stage of the icon */
-  fun updateStage(it: StageViewModel) {
-    helper.onUpdateStage(it)
-    invalidateSelf()
-  }
-
   /** Stop drawing the fingerprint icon. */
   fun stopDrawing() {
     alpha = 0
@@ -211,6 +172,7 @@ class UdfpsEnrollIconV2 internal constructor(context: Context, attrs: AttributeS
     if (currentBounds.equals(offsetRect)) {
       return
     }
+
     val xAnimator = ValueAnimator.ofFloat(currentBounds.left.toFloat(), offsetRect.left)
     xAnimator.addUpdateListener {
       currX = it.animatedValue as Float
@@ -260,6 +222,40 @@ class UdfpsEnrollIconV2 internal constructor(context: Context, attrs: AttributeS
     targetAnimationDuration = TARGET_ANIM_DURATION_LONG
   }
 
+  /**
+   * Indicates a change to guided enrollment has occurred. Also indicates if we are recreating the
+   * view, in which case their is no need to animate the icon to whatever position it was in.
+   */
+  fun updateGuidedEnrollment(point: PointF,  isRecreating: Boolean) {
+    guidedEnrollmentOffset = point
+    if (isRecreating) {
+      setAnimationTimeToZero()
+    } else {
+      restoreAnimationTime()
+    }
+
+    val currentBounds = getCurrLocation().toRect()
+    val offset = guidedEnrollmentOffset
+    if (offset?.x != 0f && offset?.y != 0f) {
+      val targetRect = Rect(sensorRectBounds).toRectF()
+      // This is the desired location of the sensor rect, the [EnrollHelper]
+      // offsets the initial sensor rect by a bit to get the user to move their finger a bit more.
+      targetRect.offset(offset!!.x, offset!!.y)
+      val shouldAnimateMovement = !currentBounds.equals(targetRect)
+      if (shouldAnimateMovement) {
+        targetAnimatorSet?.cancel()
+        animateMovement(currentBounds, targetRect, true)
+      } else {
+        // If we are not offsetting the sensor, move it back to its original place
+        animateMovement(currentBounds, sensorRectBounds.toRectF(), false)
+      }
+    } else {
+      // If we are not offsetting the sensor, move it back to its original place
+      animateMovement(currentBounds, sensorRectBounds.toRectF(), false)
+    }
+    invalidateSelf()
+  }
+
   companion object {
     private const val TAG = "UdfpsEnrollDrawableV2"
     private const val DEFAULT_STROKE_WIDTH = 3f

src/com/android/settings/biometrics/fingerprint2/ui/enrollment/modules/enrolling/udfps/ui/widget/UdfpsEnrollProgressBarDrawableV2.kt

@@ -27,10 +27,12 @@ import android.graphics.Rect
 import android.graphics.drawable.Drawable
 import android.util.AttributeSet
 import android.util.DisplayMetrics
+import android.util.Log
 import android.view.animation.DecelerateInterpolator
 import android.view.animation.Interpolator
 import android.view.animation.OvershootInterpolator
 import androidx.annotation.ColorInt
+import androidx.core.animation.addListener
 import androidx.core.animation.doOnEnd
 import androidx.core.graphics.toRectF
 import com.android.internal.annotations.VisibleForTesting
@@ -46,6 +48,7 @@ import kotlin.math.sin
 class UdfpsEnrollProgressBarDrawableV2(private val context: Context, attrs: AttributeSet?) :
   Drawable() {
   private val sensorRect: Rect = Rect()
+  private var onFinishedCompletionAnimation: (() -> Unit)? = null
   private var rotation: Int = 0
   private val strokeWidthPx: Float
 
@@ -287,6 +290,12 @@ class UdfpsEnrollProgressBarDrawableV2(private val context: Context, attrs: Attr
         checkMarkDrawable.bounds = newBounds
         checkMarkDrawable.setVisible(true, false)
       }
+      doOnEnd {
+        onFinishedCompletionAnimation?.let{
+          it()
+        }
+
+      }
       start()
     }
   }
@@ -380,6 +389,13 @@ class UdfpsEnrollProgressBarDrawableV2(private val context: Context, attrs: Attr
     checkmarkAnimationDuration = CHECKMARK_ANIMATION_DURATION_MS
   }
 
+  /**
+   * Indicates that the finish animation has completed, and enrollment can proceed to the next stage
+   */
+  fun setFinishAnimationCompleted(onFinishedAnimation: () -> Unit) {
+    this.onFinishedCompletionAnimation = onFinishedAnimation
+  }
+
   companion object {
     private const val TAG = "UdfpsProgressBar"
     private const val FILL_COLOR_ANIMATION_DURATION_MS = 350L

src/com/android/settings/biometrics/fingerprint2/ui/enrollment/modules/enrolling/udfps/ui/widget/UdfpsEnrollViewV2.kt

@@ -18,6 +18,7 @@ package com.android.settings.biometrics.fingerprint2.ui.enrollment.modules.enrol
 
 import android.content.Context
 import android.graphics.Point
+import android.graphics.PointF
 import android.graphics.Rect
 import android.util.AttributeSet
 import android.util.Log
@@ -31,7 +32,6 @@ import android.widget.FrameLayout
 import android.widget.ImageView
 import com.android.settings.R
 import com.android.settings.biometrics.fingerprint2.lib.model.FingerEnrollState
-import com.android.settings.biometrics.fingerprint2.lib.model.StageViewModel
 import com.android.systemui.biometrics.UdfpsUtils
 import com.android.systemui.biometrics.shared.model.FingerprintSensorType
 import com.android.systemui.biometrics.shared.model.UdfpsOverlayParams
@@ -53,6 +53,13 @@ class UdfpsEnrollViewV2(context: Context, attrs: AttributeSet?) : FrameLayout(co
   private val udfpsUtils: UdfpsUtils = UdfpsUtils()
   private lateinit var touchExplorationAnnouncer: TouchExplorationAnnouncer
   private var isRecreating = false
+  private var onFinishedCompletionAnimation: (() -> Unit)? = null
+
+  init {
+    fingerprintProgressDrawable.setFinishAnimationCompleted {
+      onFinishedCompletionAnimation?.let { it() }
+    }
+  }
 
   /**
    * This function computes the center (x,y) location with respect to the parent [FrameLayout] for
@@ -112,11 +119,6 @@ class UdfpsEnrollViewV2(context: Context, attrs: AttributeSet?) : FrameLayout(co
     touchExplorationAnnouncer = TouchExplorationAnnouncer(context, this, overlayParams, udfpsUtils)
   }
 
-  /** Updates the current enrollment stage. */
-  fun updateStage(it: StageViewModel) {
-    fingerprintIcon.updateStage(it)
-  }
-
   /** Receive enroll progress event */
   fun onUdfpsEvent(event: FingerEnrollState) {
     when (event) {
@@ -174,7 +176,6 @@ class UdfpsEnrollViewV2(context: Context, attrs: AttributeSet?) : FrameLayout(co
 
   /** Receive enroll progress event */
   private fun onEnrollmentProgress(remaining: Int, totalSteps: Int) {
-    fingerprintIcon.onEnrollmentProgress(remaining, totalSteps)
     fingerprintProgressDrawable.onEnrollmentProgress(remaining, totalSteps)
   }
 
@@ -241,10 +242,25 @@ class UdfpsEnrollViewV2(context: Context, attrs: AttributeSet?) : FrameLayout(co
 
   /** Indicates we should should restore the views saved state. */
   fun onEnrollProgressSaved(it: FingerEnrollState.EnrollProgress) {
-    fingerprintIcon.onEnrollmentProgress(it.remainingSteps, it.totalStepsRequired, true)
     fingerprintProgressDrawable.onEnrollmentProgress(it.remainingSteps, it.totalStepsRequired, true)
   }
 
+  /** Indicates we are recreating the UI from a saved state. */
+  fun onGuidedPointSaved(it: PointF) {
+    fingerprintIcon.updateGuidedEnrollment(it, true)
+  }
+
+  /**
+   * Indicates that the finish animation has completed, and enrollment can proceed to the next stage
+   */
+  fun setFinishAnimationCompleted(onFinishedAnimation: () -> Unit) {
+    this.onFinishedCompletionAnimation = onFinishedAnimation
+  }
+
+  fun updateGuidedEnrollment(point: PointF) {
+    fingerprintIcon.updateGuidedEnrollment(point, false)
+  }
+
   companion object {
     private const val TAG = "UdfpsEnrollView"
   }

src/com/android/settings/biometrics/fingerprint2/ui/enrollment/viewmodel/FingerprintNavigationStep.kt

@@ -88,7 +88,10 @@ sealed interface FingerprintNavigationStep {
   }
 
   /** UiSteps should have a 1 to 1 mapping between each screen of FingerprintEnrollment */
-  sealed class UiStep : FingerprintNavigationStep
+  sealed class UiStep(
+    val enterTransition: Transition = Transition.EnterFromRight,
+    val exitTransition: Transition = Transition.ExitToLeft,
+  ) : FingerprintNavigationStep
 
   /** This is the landing page for enrollment, where no content is shown. */
   data object Init : UiStep() {
@@ -103,7 +106,7 @@ sealed interface FingerprintNavigationStep {
           } else if (state.flowType is FastEnroll) {
             TransitionStep(Enrollment(state.fingerprintSensor!!))
           } else {
-            TransitionStep(Introduction)
+            TransitionStep(Introduction())
           }
         }
         else -> null
@@ -118,7 +121,7 @@ sealed interface FingerprintNavigationStep {
       action: FingerprintAction,
     ): FingerprintNavigationStep? {
       return when (action) {
-        FingerprintAction.CONFIRM_DEVICE_SUCCESS -> TransitionStep(Introduction)
+        FingerprintAction.CONFIRM_DEVICE_SUCCESS -> TransitionStep(Introduction())
         FingerprintAction.CONFIRM_DEVICE_FAIL -> Finish(null)
         else -> null
       }
@@ -126,7 +129,10 @@ sealed interface FingerprintNavigationStep {
   }
 
   /** Indicates the FingerprintIntroduction screen is being presented to the user */
-  data object Introduction : UiStep() {
+  class Introduction(
+    enterTransition: Transition = Transition.EnterFromRight,
+    exitTransition: Transition = Transition.ExitToLeft,
+  ) : UiStep(enterTransition, exitTransition) {
     override fun update(
       state: NavigationState,
       action: FingerprintAction,
@@ -141,7 +147,11 @@ sealed interface FingerprintNavigationStep {
   }
 
   /** Indicates the FingerprintEducation screen is being presented to the user */
-  data class Education(val sensor: FingerprintSensor) : UiStep() {
+  class Education(
+    val sensor: FingerprintSensor,
+    enterTransition: Transition = Transition.EnterFromRight,
+    exitTransition: Transition = Transition.ExitToLeft,
+  ) : UiStep(enterTransition, exitTransition) {
     override fun update(
       state: NavigationState,
       action: FingerprintAction,
@@ -149,7 +159,8 @@ sealed interface FingerprintNavigationStep {
       return when (action) {
         FingerprintAction.NEXT -> TransitionStep(Enrollment(state.fingerprintSensor!!))
         FingerprintAction.NEGATIVE_BUTTON_PRESSED,
-        FingerprintAction.PREV -> TransitionStep(Introduction)
+        FingerprintAction.PREV ->
+          TransitionStep(Introduction(Transition.EnterFromLeft, Transition.ExitToRight))
         else -> null
       }
     }
@@ -179,7 +190,10 @@ sealed interface FingerprintNavigationStep {
     ): FingerprintNavigationStep? {
       return when (action) {
         FingerprintAction.NEXT -> Finish(null)
-        FingerprintAction.PREV -> TransitionStep(Education(state.fingerprintSensor!!))
+        FingerprintAction.PREV ->
+          TransitionStep(
+            Education(state.fingerprintSensor!!, Transition.EnterFromLeft, Transition.ExitToRight)
+          )
         FingerprintAction.ADD_ANOTHER -> TransitionStep(Enrollment(state.fingerprintSensor!!))
         else -> null
       }

src/com/android/settings/biometrics/fingerprint2/ui/enrollment/viewmodel/TransitionViewModel.kt

@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.biometrics.fingerprint2.ui.enrollment.viewmodel
+
+/** Indicates the type of transitions that can occur between fragments */
+sealed class Transition {
+  /**
+   * Indicates the new fragment should slide in from the left side
+   */
+  data object EnterFromLeft : Transition()
+
+  /**
+   * Indicates the new fragment should slide in from the right side
+   */
+  data object EnterFromRight : Transition()
+
+  /**
+   * Indicates the old fragment should slide out to the left side
+   */
+  data object ExitToLeft : Transition()
+
+  /**
+   * Indicates the old fragment should slide out to the right side
+   */
+  data object ExitToRight : Transition()
+}
+

tests/robotests/src/com/android/settings/biometrics/fingerprint2/fragment/FingerprintEnrollIntroFragmentTest.kt

@@ -90,7 +90,7 @@ class FingerprintEnrollIntroFragmentTest {
 
   private val navigationViewModel =
     FingerprintNavigationViewModel(
-      Introduction,
+      Introduction(),
       false,
       flowViewModel,
       interactor

tests/screenshot/src/com/android/settings/tests/screenshot/biometrics/fingerprint/fragment/FingerprintEnrollIntroScreenshotTest.kt

@@ -28,7 +28,7 @@ import platform.test.screenshot.ViewScreenshotTestRule.Mode
 
 @RunWith(AndroidJUnit4::class)
 class FingerprintEnrollIntroScreenshotTest {
-  private val injector: Injector = Injector(FingerprintNavigationStep.Introduction)
+  private val injector: Injector = Injector(FingerprintNavigationStep.Introduction())
 
   @Rule
   @JvmField