Don't show UNLOCK button when there are no users.

Alternate lock screen shows UNLOCK button in the middle of an
empty screen before any user has been created. See the screenshot
in the bug.

This fixes it. The approach is similar to the check in
KeyguardViewMediator.handleHide().

Bug: 27109342
Change-Id: I25536364b2c456d6fd55c79de7f25d2b0667e26f

1 files changed, 5 insertions, 1 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBouncer.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBouncer.java
index 190e37ff5481..825b64459397 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBouncer.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBouncer.java
@@ -79,6 +79,11 @@ public class KeyguardBouncer {
     }
 
     public void show(boolean resetSecuritySelection) {
+        final int keyguardUserId = KeyguardUpdateMonitor.getCurrentUser();
+        if (keyguardUserId == UserHandle.USER_SYSTEM && UserManager.isSplitSystemUser()) {
+            // In split system user mode, we never unlock system user.
+            return;
+        }
         mFalsingManager.onBouncerShown();
         ensureView();
         if (resetSecuritySelection) {
@@ -91,7 +96,6 @@ public class KeyguardBouncer {
         }
 
         final int activeUserId = ActivityManager.getCurrentUser();
-        final int keyguardUserId = KeyguardUpdateMonitor.getCurrentUser();
         final boolean allowDismissKeyguard =
                 !(UserManager.isSplitSystemUser() && activeUserId == UserHandle.USER_SYSTEM)
                 && activeUserId == keyguardUserId;