Ensure that dreams show while docked.
Fixed a race between the UiModeManagerService and PowerManagerService
both of which are trying to wake the device when docked / powered.
Bug: 7281240
Change-Id: Ia41fef48f17f2a2eb56549437d295f9a86c95af2
diff --git a/services/java/com/android/server/UiModeManagerService.java b/services/java/com/android/server/UiModeManagerService.java
index d1af2b0..e9e3163 100644
--- a/services/java/com/android/server/UiModeManagerService.java
+++ b/services/java/com/android/server/UiModeManagerService.java
@@ -37,6 +37,7 @@
import android.os.PowerManager;
import android.os.RemoteException;
import android.os.ServiceManager;
+import android.os.SystemClock;
import android.os.UserHandle;
import android.provider.Settings;
import android.service.dreams.DreamService;
@@ -90,6 +91,8 @@
private NotificationManager mNotificationManager;
private StatusBarManager mStatusBarManager;
+
+ private final PowerManager mPowerManager;
private final PowerManager.WakeLock mWakeLock;
static Intent buildHomeIntent(String category) {
@@ -163,8 +166,8 @@
mContext.registerReceiver(mBatteryReceiver,
new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
- PowerManager powerManager = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
- mWakeLock = powerManager.newWakeLock(PowerManager.FULL_WAKE_LOCK, TAG);
+ mPowerManager = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
+ mWakeLock = mPowerManager.newWakeLock(PowerManager.FULL_WAKE_LOCK, TAG);
mConfiguration.setToDefaults();
@@ -502,7 +505,17 @@
try {
IDreamManager dreamManagerService = IDreamManager.Stub.asInterface(
ServiceManager.getService(DreamService.DREAM_SERVICE));
- dreamManagerService.dream();
+ if (dreamManagerService != null && !dreamManagerService.isDreaming()) {
+ // Wake up.
+ // The power manager will wake up the system when it starts receiving power
+ // but there is a race between that happening and the UI mode manager
+ // starting a dream. We want the system to already be awake
+ // by the time this happens. Otherwise the dream may not start.
+ mPowerManager.wakeUp(SystemClock.uptimeMillis());
+
+ // Dream.
+ dreamManagerService.dream();
+ }
} catch (RemoteException ex) {
Slog.e(TAG, "Could not start dream when docked.", ex);
}