Make aodIconTint default to white.

Previously, this defaulted to NO_COLOR (0) when the wallpaperTextColor
cannot be fetched from the context, which made some icons not show up at
all.

Bug: 260377107
Test: manual testing (issue fully reproducible with the debug
notification icon) &  atest SystemUITests

Change-Id: Ia407251621fe11ec5daac76677d6b66bf8015fa2
diff --git a/packages/SettingsLib/src/com/android/settingslib/Utils.java b/packages/SettingsLib/src/com/android/settingslib/Utils.java
index a822e18..5611976 100644
--- a/packages/SettingsLib/src/com/android/settingslib/Utils.java
+++ b/packages/SettingsLib/src/com/android/settingslib/Utils.java
@@ -308,8 +308,16 @@
 
     @ColorInt
     public static int getColorAttrDefaultColor(Context context, int attr) {
+        return getColorAttrDefaultColor(context, attr, 0);
+    }
+
+    /**
+     * Get color styled attribute {@code attr}, default to {@code defValue} if not found.
+     */
+    @ColorInt
+    public static int getColorAttrDefaultColor(Context context, int attr, @ColorInt int defValue) {
         TypedArray ta = context.obtainStyledAttributes(new int[]{attr});
-        @ColorInt int colorAccent = ta.getColor(0, 0);
+        @ColorInt int colorAccent = ta.getColor(0, defValue);
         ta.recycle();
         return colorAccent;
     }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationIconAreaController.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationIconAreaController.java
index e70c81d..85590fc 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationIconAreaController.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationIconAreaController.java
@@ -11,6 +11,7 @@
 import android.view.View;
 import android.widget.FrameLayout;
 
+import androidx.annotation.ColorInt;
 import androidx.annotation.NonNull;
 import androidx.annotation.VisibleForTesting;
 import androidx.collection.ArrayMap;
@@ -62,6 +63,8 @@
 
     public static final String HIGH_PRIORITY = "high_priority";
     private static final long AOD_ICONS_APPEAR_DURATION = 200;
+    @ColorInt
+    private static final int DEFAULT_AOD_ICON_COLOR = 0xffffffff;
 
     private final ContrastColorUtil mContrastColorUtil;
     private final Runnable mUpdateStatusBarIcons = this::updateStatusBarIcons;
@@ -84,7 +87,7 @@
     private NotificationIconContainer mShelfIcons;
     private NotificationIconContainer mAodIcons;
     private final ArrayList<Rect> mTintAreas = new ArrayList<>();
-    private Context mContext;
+    private final Context mContext;
 
     private final DemoModeController mDemoModeController;
 
@@ -567,7 +570,7 @@
 
     private void reloadAodColor() {
         mAodIconTint = Utils.getColorAttrDefaultColor(mContext,
-                R.attr.wallpaperTextColor);
+                R.attr.wallpaperTextColor, DEFAULT_AOD_ICON_COLOR);
     }
 
     private void updateAodIconColors() {