diff --git a/packages/SystemUI/src/com/android/keyguard/AnimatableClockController.java b/packages/SystemUI/src/com/android/keyguard/AnimatableClockController.java
index efcf40a662582..a383cab94c366 100644
--- a/packages/SystemUI/src/com/android/keyguard/AnimatableClockController.java
+++ b/packages/SystemUI/src/com/android/keyguard/AnimatableClockController.java
@@ -20,12 +20,16 @@ import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.content.res.Resources;
 import android.graphics.Color;
 import android.icu.text.NumberFormat;
 
+import androidx.annotation.VisibleForTesting;
+
 import com.android.settingslib.Utils;
 import com.android.systemui.R;
 import com.android.systemui.broadcast.BroadcastDispatcher;
+import com.android.systemui.dagger.qualifiers.Main;
 import com.android.systemui.plugins.statusbar.StatusBarStateController;
 import com.android.systemui.statusbar.phone.KeyguardBypassController;
 import com.android.systemui.statusbar.policy.BatteryController;
@@ -67,20 +71,20 @@ public class AnimatableClockController extends ViewController<AnimatableClockVie
             BroadcastDispatcher broadcastDispatcher,
             BatteryController batteryController,
             KeyguardUpdateMonitor keyguardUpdateMonitor,
-            KeyguardBypassController bypassController) {
+            KeyguardBypassController bypassController,
+            @Main Resources resources
+    ) {
         super(view);
         mStatusBarStateController = statusBarStateController;
-        mIsDozing = mStatusBarStateController.isDozing();
-        mDozeAmount = mStatusBarStateController.getDozeAmount();
         mBroadcastDispatcher = broadcastDispatcher;
         mKeyguardUpdateMonitor = keyguardUpdateMonitor;
         mBypassController = bypassController;
         mBatteryController = batteryController;
 
         mBurmeseNumerals = mBurmeseNf.format(FORMAT_NUMBER);
-        mBurmeseLineSpacing = getContext().getResources().getFloat(
+        mBurmeseLineSpacing = resources.getFloat(
                 R.dimen.keyguard_clock_line_spacing_scale_burmese);
-        mDefaultLineSpacing = getContext().getResources().getFloat(
+        mDefaultLineSpacing = resources.getFloat(
                 R.dimen.keyguard_clock_line_spacing_scale);
     }
 
@@ -106,7 +110,7 @@ public class AnimatableClockController extends ViewController<AnimatableClockVie
         }
     };
 
-    private final StatusBarStateController.StateListener mStatusBarStatePersistentListener =
+    private final StatusBarStateController.StateListener mStatusBarStateListener =
             new StatusBarStateController.StateListener() {
                 @Override
                 public void onDozeAmountChanged(float linear, float eased) {
@@ -144,11 +148,11 @@ public class AnimatableClockController extends ViewController<AnimatableClockVie
         mBroadcastDispatcher.registerReceiver(mLocaleBroadcastReceiver,
                 new IntentFilter(Intent.ACTION_LOCALE_CHANGED));
         mDozeAmount = mStatusBarStateController.getDozeAmount();
+        mIsDozing = mStatusBarStateController.isDozing() || mDozeAmount != 0;
         mBatteryController.addCallback(mBatteryCallback);
         mKeyguardUpdateMonitor.registerCallback(mKeyguardUpdateMonitorCallback);
 
-        mStatusBarStateController.removeCallback(mStatusBarStatePersistentListener);
-        mStatusBarStateController.addCallback(mStatusBarStatePersistentListener);
+        mStatusBarStateController.addCallback(mStatusBarStateListener);
 
         refreshTime();
         initColors();
@@ -160,7 +164,7 @@ public class AnimatableClockController extends ViewController<AnimatableClockVie
         mBroadcastDispatcher.unregisterReceiver(mLocaleBroadcastReceiver);
         mKeyguardUpdateMonitor.removeCallback(mKeyguardUpdateMonitorCallback);
         mBatteryController.removeCallback(mBatteryCallback);
-        mStatusBarStateController.removeCallback(mStatusBarStatePersistentListener);
+        mStatusBarStateController.removeCallback(mStatusBarStateListener);
     }
 
     /** Animate the clock appearance */
@@ -189,6 +193,14 @@ public class AnimatableClockController extends ViewController<AnimatableClockVie
         mView.refreshFormat();
     }
 
+    /**
+     * Return locallly stored dozing state.
+     */
+    @VisibleForTesting
+    public boolean isDozing() {
+        return mIsDozing;
+    }
+
     private void updateLocale() {
         Locale currLocale = Locale.getDefault();
         if (!Objects.equals(currLocale, mLocale)) {
diff --git a/packages/SystemUI/src/com/android/keyguard/KeyguardClockSwitchController.java b/packages/SystemUI/src/com/android/keyguard/KeyguardClockSwitchController.java
index 260b39378485c..4111020afbf59 100644
--- a/packages/SystemUI/src/com/android/keyguard/KeyguardClockSwitchController.java
+++ b/packages/SystemUI/src/com/android/keyguard/KeyguardClockSwitchController.java
@@ -22,6 +22,7 @@ import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
 import static com.android.keyguard.KeyguardClockSwitch.LARGE;
 
 import android.app.WallpaperManager;
+import android.content.res.Resources;
 import android.text.TextUtils;
 import android.view.View;
 import android.widget.FrameLayout;
@@ -32,6 +33,7 @@ import com.android.keyguard.clock.ClockManager;
 import com.android.systemui.R;
 import com.android.systemui.broadcast.BroadcastDispatcher;
 import com.android.systemui.colorextraction.SysuiColorExtractor;
+import com.android.systemui.dagger.qualifiers.Main;
 import com.android.systemui.keyguard.KeyguardUnlockAnimationController;
 import com.android.systemui.plugins.ClockPlugin;
 import com.android.systemui.plugins.statusbar.StatusBarStateController;
@@ -67,6 +69,7 @@ public class KeyguardClockSwitchController extends ViewController<KeyguardClockS
     private final BroadcastDispatcher mBroadcastDispatcher;
     private final BatteryController mBatteryController;
     private final LockscreenSmartspaceController mSmartspaceController;
+    private final Resources mResources;
 
     /**
      * Clock for both small and large sizes
@@ -118,7 +121,8 @@ public class KeyguardClockSwitchController extends ViewController<KeyguardClockS
             KeyguardBypassController bypassController,
             LockscreenSmartspaceController smartspaceController,
             KeyguardUnlockAnimationController keyguardUnlockAnimationController,
-            SmartspaceTransitionController smartspaceTransitionController) {
+            SmartspaceTransitionController smartspaceTransitionController,
+            @Main Resources resources) {
         super(keyguardClockSwitch);
         mStatusBarStateController = statusBarStateController;
         mColorExtractor = colorExtractor;
@@ -130,6 +134,7 @@ public class KeyguardClockSwitchController extends ViewController<KeyguardClockS
         mKeyguardUpdateMonitor = keyguardUpdateMonitor;
         mBypassController = bypassController;
         mSmartspaceController = smartspaceController;
+        mResources = resources;
 
         mKeyguardUnlockAnimationController = keyguardUnlockAnimationController;
         mSmartspaceTransitionController = smartspaceTransitionController;
@@ -159,7 +164,8 @@ public class KeyguardClockSwitchController extends ViewController<KeyguardClockS
                         mBroadcastDispatcher,
                         mBatteryController,
                         mKeyguardUpdateMonitor,
-                        mBypassController);
+                        mBypassController,
+                        mResources);
         mClockViewController.init();
 
         mLargeClockViewController =
@@ -169,7 +175,8 @@ public class KeyguardClockSwitchController extends ViewController<KeyguardClockS
                         mBroadcastDispatcher,
                         mBatteryController,
                         mKeyguardUpdateMonitor,
-                        mBypassController);
+                        mBypassController,
+                        mResources);
         mLargeClockViewController.init();
     }
 
diff --git a/packages/SystemUI/tests/src/com/android/keyguard/KeyguardClockSwitchControllerTest.java b/packages/SystemUI/tests/src/com/android/keyguard/KeyguardClockSwitchControllerTest.java
index 88b596c26c0fd..5c7885f47c593 100644
--- a/packages/SystemUI/tests/src/com/android/keyguard/KeyguardClockSwitchControllerTest.java
+++ b/packages/SystemUI/tests/src/com/android/keyguard/KeyguardClockSwitchControllerTest.java
@@ -142,7 +142,8 @@ public class KeyguardClockSwitchControllerTest extends SysuiTestCase {
                 mBypassController,
                 mSmartspaceController,
                 mKeyguardUnlockAnimationController,
-                mSmartSpaceTransitionController
+                mSmartSpaceTransitionController,
+                mResources
         );
 
         when(mStatusBarStateController.getState()).thenReturn(StatusBarState.SHADE);
diff --git a/packages/SystemUI/tests/src/com/android/systemui/keyguard/AnimatableClockControllerTest.java b/packages/SystemUI/tests/src/com/android/systemui/keyguard/AnimatableClockControllerTest.java
new file mode 100644
index 0000000000000..df112840ed876
--- /dev/null
+++ b/packages/SystemUI/tests/src/com/android/systemui/keyguard/AnimatableClockControllerTest.java
@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2021 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.systemui.keyguard;
+
+import static com.android.dx.mockito.inline.extended.ExtendedMockito.mockitoSession;
+
+import static junit.framework.Assert.assertFalse;
+import static junit.framework.Assert.assertTrue;
+
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.ArgumentMatchers.anyObject;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.res.Resources;
+import android.testing.AndroidTestingRunner;
+import android.testing.TestableLooper;
+import android.view.View;
+
+import androidx.test.filters.SmallTest;
+
+import com.android.keyguard.AnimatableClockController;
+import com.android.keyguard.AnimatableClockView;
+import com.android.keyguard.KeyguardUpdateMonitor;
+import com.android.settingslib.Utils;
+import com.android.systemui.SysuiTestCase;
+import com.android.systemui.broadcast.BroadcastDispatcher;
+import com.android.systemui.plugins.statusbar.StatusBarStateController;
+import com.android.systemui.statusbar.phone.KeyguardBypassController;
+import com.android.systemui.statusbar.policy.BatteryController;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Captor;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.mockito.MockitoSession;
+import org.mockito.quality.Strictness;
+
+@SmallTest
+@RunWith(AndroidTestingRunner.class)
+@TestableLooper.RunWithLooper
+public class AnimatableClockControllerTest extends SysuiTestCase {
+    @Mock
+    private AnimatableClockView mClockView;
+    @Mock
+    private StatusBarStateController mStatusBarStateController;
+    @Mock
+    private BroadcastDispatcher mBroadcastDispatcher;
+    @Mock
+    private BatteryController mBatteryController;
+    @Mock
+    private KeyguardUpdateMonitor mKeyguardUpdateMonitor;
+    @Mock
+    private KeyguardBypassController mBypassController;
+    @Mock
+    private Resources mResources;
+
+    private MockitoSession mStaticMockSession;
+    private AnimatableClockController mAnimatableClockController;
+
+    // Capture listeners so that they can be used to send events
+    @Captor private ArgumentCaptor<View.OnAttachStateChangeListener> mAttachCaptor =
+            ArgumentCaptor.forClass(View.OnAttachStateChangeListener.class);
+    private View.OnAttachStateChangeListener mAttachListener;
+
+    @Captor private ArgumentCaptor<StatusBarStateController.StateListener> mStatusBarStateCaptor;
+    private StatusBarStateController.StateListener mStatusBarStateCallback;
+
+    @Before
+    public void setUp() throws Exception {
+        MockitoAnnotations.initMocks(this);
+        mStaticMockSession = mockitoSession()
+                .mockStatic(Utils.class)
+                .strictness(Strictness.LENIENT) // it's ok if mocked classes aren't used
+                .startMocking();
+        when(Utils.getColorAttrDefaultColor(anyObject(), anyInt())).thenReturn(0);
+
+        mAnimatableClockController = new AnimatableClockController(
+                mClockView,
+                mStatusBarStateController,
+                mBroadcastDispatcher,
+                mBatteryController,
+                mKeyguardUpdateMonitor,
+                mBypassController,
+                mResources
+        );
+        mAnimatableClockController.init();
+        captureAttachListener();
+    }
+
+    @After
+    public void tearDown() {
+        mStaticMockSession.finishMocking();
+    }
+
+    @Test
+    public void testOnAttachedUpdatesDozeStateToTrue() {
+        // GIVEN dozing
+        when(mStatusBarStateController.isDozing()).thenReturn(true);
+        when(mStatusBarStateController.getDozeAmount()).thenReturn(1f);
+
+        // WHEN the clock view gets attached
+        mAttachListener.onViewAttachedToWindow(mClockView);
+
+        // THEN the clock controller updated its dozing state to true
+        assertTrue(mAnimatableClockController.isDozing());
+    }
+
+    @Test
+    public void testOnAttachedUpdatesDozeStateToFalse() {
+        // GIVEN not dozing
+        when(mStatusBarStateController.isDozing()).thenReturn(false);
+        when(mStatusBarStateController.getDozeAmount()).thenReturn(0f);
+
+        // WHEN the clock view gets attached
+        mAttachListener.onViewAttachedToWindow(mClockView);
+
+        // THEN the clock controller updated its dozing state to false
+        assertFalse(mAnimatableClockController.isDozing());
+    }
+
+    private void captureAttachListener() {
+        verify(mClockView).addOnAttachStateChangeListener(mAttachCaptor.capture());
+        mAttachListener = mAttachCaptor.getValue();
+    }
+}