Use values-night to control the dark mode background color

Bug: 149974597
Test: make -j42 RunSettingsRoboTests
Change-Id: Ia10f7bab0ec7781db8b4b4dbdf359bb8a87672cc

res/values-night/colors.xml

@@ -37,5 +37,6 @@
     <color name="palette_list_color_cyan">@color/palette_list_dark_mode_color_cyan</color>
     <color name="palette_list_color_blue">@color/palette_list_dark_mode_color_blue</color>
     <color name="palette_list_color_purple">@color/palette_list_dark_mode_color_purple</color>
+    <color name="gestures_setting_background_color">@android:color/black</color>
 </resources>
 

src/com/android/settings/widget/VideoPreference.java

@@ -39,17 +39,12 @@ import com.android.settings.R;
 public class VideoPreference extends Preference {
 
     private static final String TAG = "VideoPreference";
-    private static final int DEFAULT_BACKGROUND_RESOURCE_ID = -1;
     private final Context mContext;
 
     @VisibleForTesting
     AnimationController mAnimationController;
     @VisibleForTesting
     boolean mAnimationAvailable;
-    @VisibleForTesting
-    LinearLayout mAnimationView;
-    @VisibleForTesting
-    int mBackgroundResId = DEFAULT_BACKGROUND_RESOURCE_ID;
 
     private float mAspectRatio = 1.0f;
     private int mPreviewId;
@@ -120,7 +115,6 @@ public class VideoPreference extends Preference {
         mVideo = (TextureView) holder.findViewById(R.id.video_texture_view);
         mPreviewImage = (ImageView) holder.findViewById(R.id.video_preview_image);
         mPlayButton = (ImageView) holder.findViewById(R.id.video_play_button);
-        mAnimationView = (LinearLayout) holder.itemView;
         final AspectRatioFrameLayout layout = (AspectRatioFrameLayout) holder.findViewById(
                 R.id.video_container);
 
@@ -130,9 +124,6 @@ public class VideoPreference extends Preference {
             layout.setLayoutParams(new LinearLayout.LayoutParams(
                     LinearLayout.LayoutParams.MATCH_PARENT, mHeight));
         }
-        if (mBackgroundResId != DEFAULT_BACKGROUND_RESOURCE_ID) {
-            mAnimationView.setBackgroundResource(mBackgroundResId);
-        }
         if (mAnimationController != null) {
             mAnimationController.attachView(mVideo, mPreviewImage, mPlayButton);
         }
@@ -212,14 +203,6 @@ public class VideoPreference extends Preference {
                 / (float) mAnimationController.getVideoHeight();
     }
 
-    /**
-     * Set the background color of the video preference
-     * @param resId resource id of color
-     */
-    public void setBackgroundColor(int resId) {
-        mBackgroundResId = resId;
-    }
-
     /**
      * Handle animation operations.
      */

tests/robotests/src/com/android/settings/widget/VideoPreferenceTest.java

@@ -32,7 +32,6 @@ import android.view.LayoutInflater;
 import android.view.TextureView;
 import android.view.View;
 import android.widget.ImageView;
-import android.widget.LinearLayout;
 
 import androidx.preference.PreferenceFragmentCompat;
 import androidx.preference.PreferenceViewHolder;
@@ -61,8 +60,6 @@ public class VideoPreferenceTest {
     private ImageView fakePreview;
     @Mock
     private ImageView fakePlayButton;
-    @Mock
-    private LinearLayout mAnimationView;
 
     private Context mContext;
     private VideoPreference mVideoPreference;
@@ -77,7 +74,6 @@ public class VideoPreferenceTest {
                 new MediaAnimationController(mContext, R.raw.accessibility_screen_magnification));
         mVideoPreference = new VideoPreference(mContext, null /* attrs */);
         mVideoPreference.mAnimationController = mAnimationController;
-        mVideoPreference.mAnimationView = mAnimationView;
         when(mAnimationController.getVideoWidth()).thenReturn(VIDEO_WIDTH);
         when(mAnimationController.getVideoHeight()).thenReturn(VIDEO_HEIGHT);
 
@@ -162,13 +158,6 @@ public class VideoPreferenceTest {
         assertThat(vp2.mAnimationController instanceof VectorAnimationController).isTrue();
     }
 
-    @Test
-    public void setBackgroundColor_shouldBeCalled() {
-        mVideoPreference.setBackgroundColor(1111);
-
-        assertThat(mVideoPreference.mBackgroundResId).isEqualTo(1111);
-    }
-
     public static class TestFragment extends PreferenceFragmentCompat {
         @Override
         public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {