Set dark theme flag when initializing with Color

Users want to be able to use this flag and have been relying on
WallpaperColors#fromBitmap given that flags were not parsed by
the main constructor.

Fixes: 151717291
Test: atest WallpaperColorsTest
Change-Id: I0470a867c54756df9a758b24835a50bc67191050

1 files changed, 8 insertions, 0 deletions

diff --git a/tests/Internal/src/android/app/WallpaperColorsTest.java b/tests/Internal/src/android/app/WallpaperColorsTest.java
index 65ff6eb1ba04..e9bac717daa1 100644
--- a/tests/Internal/src/android/app/WallpaperColorsTest.java
+++ b/tests/Internal/src/android/app/WallpaperColorsTest.java
@@ -87,6 +87,14 @@ public class WallpaperColorsTest {
                 + "HINT_FROM_BITMAP.", fromBitmap);
     }
 
+    @Test
+    public void darkMainColorSupportsDarkTheme() {
+        final Color color = Color.valueOf(Color.BLACK);
+        WallpaperColors colors = new WallpaperColors(color, null, null);
+        Assert.assertTrue("Dark theme should be supported by dark main colors.",
+                (colors.getColorHints() & WallpaperColors.HINT_SUPPORTS_DARK_THEME) != 0);
+    }
+
     /**
      * WallpaperColors should not recycle bitmaps that it didn't create.
      */