Added ability to extract accent color from wallpaper on 8.1+ devices

app/src/main/java/code/name/monkey/retromusic/helper/WallpaperAccentManager.kt

@@ -0,0 +1,40 @@
+package code.name.monkey.retromusic.helper
+
+import android.app.WallpaperManager
+import android.content.Context
+import android.os.Build
+import android.os.Handler
+import android.os.Looper
+import androidx.annotation.RequiresApi
+import code.name.monkey.appthemehelper.ThemeStore
+import code.name.monkey.appthemehelper.util.VersionUtils
+import code.name.monkey.retromusic.util.PreferenceUtil
+
+class WallpaperAccentManager(val context: Context) {
+
+    @RequiresApi(Build.VERSION_CODES.O_MR1)
+    private val onColorsChangedListener =
+        WallpaperManager.OnColorsChangedListener { colors, which ->
+            if (which == WallpaperManager.FLAG_SYSTEM && colors != null) {
+                ThemeStore.editTheme(context).wallpaperColor(colors.primaryColor.toArgb()).commit()
+            }
+        }
+
+    fun init() {
+        if (VersionUtils.hasOreoMR1() && PreferenceUtil.wallpaperAccent) {
+            WallpaperManager.getInstance(context).apply {
+                addOnColorsChangedListener(onColorsChangedListener, Handler(Looper.getMainLooper()))
+                ThemeStore.editTheme(context).wallpaperColor(
+                    getWallpaperColors(WallpaperManager.FLAG_SYSTEM)?.primaryColor?.toArgb() ?: 0
+                ).commit()
+            }
+        }
+    }
+
+    fun release() {
+        if (VersionUtils.hasOreoMR1()) {
+            WallpaperManager.getInstance(context)
+                .removeOnColorsChangedListener(onColorsChangedListener)
+        }
+    }
+}