Wait for keyguard draw before stopping boot animation

- Add check for keyguard drawn before stopping boot animation.
  Otherwise blank screen can happen.
- Bind to keyguard service when sysui is launched to reduce waiting
  time later.
- Increase keyguard timeout to 5 secs if it is not boot completed.
  Otherwise (= normal screen on), keep the current 1 sec.
  This timeout can still lead into blank screen so use bigger timeout
  during boot-up to prevent such case.

bug: 37867510
Test: many reboots

Change-Id: Ibfdc42d295bb1d3f5b4ea316fe5aca9ab875e4be

1 files changed, 4 insertions, 2 deletions

diff --git a/services/java/com/android/server/SystemServer.java b/services/java/com/android/server/SystemServer.java
index 0965f03c27e9..b620b3e0e6e9 100644
--- a/services/java/com/android/server/SystemServer.java
+++ b/services/java/com/android/server/SystemServer.java
@@ -1644,6 +1644,7 @@ public final class SystemServer {
         final MediaRouterService mediaRouterF = mediaRouter;
         final MmsServiceBroker mmsServiceF = mmsService;
         final IpSecService ipSecServiceF = ipSecService;
+        final WindowManagerService windowManagerF = wm;
 
         // We now tell the activity manager it is okay to run third party
         // code.  It will call back into us once it has gotten to the state
@@ -1683,7 +1684,7 @@ public final class SystemServer {
 
             traceBeginAndSlog("StartSystemUI");
             try {
-                startSystemUi(context);
+                startSystemUi(context, windowManagerF);
             } catch (Throwable e) {
                 reportWtf("starting System UI", e);
             }
@@ -1837,13 +1838,14 @@ public final class SystemServer {
         }, BOOT_TIMINGS_TRACE_LOG);
     }
 
-    static final void startSystemUi(Context context) {
+    static final void startSystemUi(Context context, WindowManagerService windowManager) {
         Intent intent = new Intent();
         intent.setComponent(new ComponentName("com.android.systemui",
                     "com.android.systemui.SystemUIService"));
         intent.addFlags(Intent.FLAG_DEBUG_TRIAGED_MISSING);
         //Slog.d(TAG, "Starting service: " + intent);
         context.startServiceAsUser(intent, UserHandle.SYSTEM);
+        windowManager.onSystemUiStarted();
     }
 
     private static void traceBeginAndSlog(String name) {