Code refactor

app/src/main/java/code/name/monkey/retromusic/util/ColorUtil.java

@@ -0,0 +1,58 @@
+package code.name.monkey.retromusic.util;
+
+import android.graphics.Bitmap;
+
+import androidx.annotation.ColorInt;
+import androidx.annotation.Nullable;
+import androidx.palette.graphics.Palette;
+
+import java.util.Collections;
+import java.util.Comparator;
+
+public class ColorUtil {
+
+    @Nullable
+    public static Palette generatePalette(Bitmap bitmap) {
+        if (bitmap == null) return null;
+        return Palette.from(bitmap).generate();
+    }
+
+    @ColorInt
+    public static int getColor(@Nullable Palette palette, int fallback) {
+        if (palette != null) {
+            if (palette.getVibrantSwatch() != null) {
+                return palette.getVibrantSwatch().getRgb();
+            } else if (palette.getMutedSwatch() != null) {
+                return palette.getMutedSwatch().getRgb();
+            } else if (palette.getDarkVibrantSwatch() != null) {
+                return palette.getDarkVibrantSwatch().getRgb();
+            } else if (palette.getDarkMutedSwatch() != null) {
+                return palette.getDarkMutedSwatch().getRgb();
+            } else if (palette.getLightVibrantSwatch() != null) {
+                return palette.getLightVibrantSwatch().getRgb();
+            } else if (palette.getLightMutedSwatch() != null) {
+                return palette.getLightMutedSwatch().getRgb();
+            } else if (!palette.getSwatches().isEmpty()) {
+                return Collections.max(palette.getSwatches(), SwatchComparator.getInstance()).getRgb();
+            }
+        }
+        return fallback;
+    }
+
+    private static class SwatchComparator implements Comparator<Palette.Swatch> {
+        private static SwatchComparator sInstance;
+
+        static SwatchComparator getInstance() {
+            if (sInstance == null) {
+                sInstance = new SwatchComparator();
+            }
+            return sInstance;
+        }
+
+        @Override
+        public int compare(Palette.Swatch lhs, Palette.Swatch rhs) {
+            return lhs.getPopulation() - rhs.getPopulation();
+        }
+    }
+
+}