Fix issue #22802691: APR: NPE in ActivityRecord

Change-Id: I8d6265589c97edc7a1d6c63f98c7252a439e62da

Author: Dianne Hackborn

services/core/java/com/android/server/am/ActivityRecord.java

@@ -530,13 +530,13 @@ boolean isNotResolverActivity() {
 
             AttributeCache.Entry ent = AttributeCache.instance().get(packageName,
                     realTheme, com.android.internal.R.styleable.Window, userId);
-            final boolean translucent = ent.array.getBoolean(
+            final boolean translucent = ent != null && (ent.array.getBoolean(
                     com.android.internal.R.styleable.Window_windowIsTranslucent, false)
                     || (!ent.array.hasValue(
                             com.android.internal.R.styleable.Window_windowIsTranslucent)
                             && ent.array.getBoolean(
                                     com.android.internal.R.styleable.Window_windowSwipeToDismiss,
-                                            false));
+                                            false)));
             fullscreen = ent != null && !ent.array.getBoolean(
                     com.android.internal.R.styleable.Window_windowIsFloating, false)
                     && !translucent;