diff --git a/src/com/android/settings/biometrics/BiometricEnrollBase.java b/src/com/android/settings/biometrics/BiometricEnrollBase.java
index 03e18d7..b62b35f 100644
--- a/src/com/android/settings/biometrics/BiometricEnrollBase.java
+++ b/src/com/android/settings/biometrics/BiometricEnrollBase.java
@@ -19,16 +19,22 @@
 import static com.android.settings.Utils.SETTINGS_PACKAGE_NAME;
 
 import android.annotation.Nullable;
+import android.annotation.SuppressLint;
 import android.content.Intent;
+import android.content.res.ColorStateList;
 import android.graphics.Color;
 import android.os.Bundle;
 import android.os.UserHandle;
 import android.text.TextUtils;
 import android.view.View;
+import android.widget.LinearLayout;
 import android.widget.TextView;
 
+import androidx.annotation.ColorInt;
+
 import com.android.settings.R;
 import com.android.settings.SetupWizardUtils;
+import com.android.settings.Utils;
 import com.android.settings.biometrics.fingerprint.FingerprintEnrollEnrolling;
 import com.android.settings.core.InstrumentedActivity;
 import com.android.settings.password.ChooseLockSettingsHelper;
@@ -138,6 +144,20 @@
     protected void onPostCreate(@Nullable Bundle savedInstanceState) {
         super.onPostCreate(savedInstanceState);
         initViews();
+
+        @SuppressLint("VisibleForTests")
+        final LinearLayout buttonContainer = mFooterBarMixin != null
+                ? mFooterBarMixin.getButtonContainer()
+                : null;
+        if (buttonContainer != null) {
+            buttonContainer.setBackgroundColor(getBackgroundColor());
+        }
+    }
+
+    @Override
+    public void onAttachedToWindow() {
+        super.onAttachedToWindow();
+        getWindow().setStatusBarColor(getBackgroundColor());
     }
 
     @Override
@@ -242,4 +262,10 @@
             mLaunchedConfirmLock = true;
         }
     }
+
+    @ColorInt
+    private int getBackgroundColor() {
+        final ColorStateList stateList = Utils.getColorAttr(this, android.R.attr.windowBackground);
+        return stateList != null ? stateList.getDefaultColor() : Color.TRANSPARENT;
+    }
 }
diff --git a/src/com/android/settings/biometrics/BiometricEnrollIntroduction.java b/src/com/android/settings/biometrics/BiometricEnrollIntroduction.java
index a85382b..09d8e71 100644
--- a/src/com/android/settings/biometrics/BiometricEnrollIntroduction.java
+++ b/src/com/android/settings/biometrics/BiometricEnrollIntroduction.java
@@ -18,8 +18,6 @@
 
 import android.app.admin.DevicePolicyManager;
 import android.content.Intent;
-import android.content.res.ColorStateList;
-import android.graphics.Color;
 import android.graphics.PorterDuff;
 import android.graphics.PorterDuffColorFilter;
 import android.os.Bundle;
@@ -27,17 +25,14 @@
 import android.os.UserManager;
 import android.util.Log;
 import android.view.View;
-import android.widget.LinearLayout;
 import android.widget.TextView;
 
-import androidx.annotation.ColorInt;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
 import com.android.internal.widget.LockPatternUtils;
 import com.android.settings.R;
 import com.android.settings.SetupWizardUtils;
-import com.android.settings.Utils;
 import com.android.settings.password.ChooseLockGeneric;
 import com.android.settings.password.ChooseLockSettingsHelper;
 
@@ -188,15 +183,6 @@
     }
 
     @Override
-    protected void onPostCreate(@Nullable Bundle savedInstanceState) {
-        super.onPostCreate(savedInstanceState);
-        final LinearLayout buttonContainer = mFooterBarMixin.getButtonContainer();
-        if (buttonContainer != null) {
-            buttonContainer.setBackgroundColor(getBackgroundColor());
-        }
-    }
-
-    @Override
     protected void onResume() {
         super.onResume();
 
@@ -214,12 +200,6 @@
     }
 
     @Override
-    public void onAttachedToWindow() {
-        super.onAttachedToWindow();
-        getWindow().setStatusBarColor(getBackgroundColor());
-    }
-
-    @Override
     protected void onSaveInstanceState(Bundle outState) {
         super.onSaveInstanceState(outState);
         outState.putBoolean(KEY_CONFIRMING_CREDENTIALS, mConfirmingCredentials);
@@ -355,10 +335,4 @@
         }
         return mIconColorFilter;
     }
-
-    @ColorInt
-    private int getBackgroundColor() {
-        final ColorStateList stateList = Utils.getColorAttr(this, android.R.attr.windowBackground);
-        return stateList != null ? stateList.getDefaultColor() : Color.TRANSPARENT;
-    }
 }