added artist & albums & fixe bugs & +perfomace in player & adjust in …

…layout (border radius)

analysis_options.yaml

@@ -3,5 +3,6 @@ include: package:flutter_lints/flutter.yaml
 linter:
   rules:
     avoid_print: true
-    # - implementation_imports : true
+    implementation_imports : true
+    prefer_const_constructors: true
     # prefer_single_quotes: true

android/app/src/main/res/drawable/rounded_background.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="@android:color/transparent" />
+    <corners android:radius="22dp" />
+    <stroke android:width="0dp" android:color="@android:color/transparent" />
+</shape>

android/app/src/main/res/layout/visualizer_music.xml

@@ -5,9 +5,10 @@
     style="@style/Widget.Android.AppWidget.Container"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="@android:color/transparent"
+    android:background="@drawable/rounded_background"
     android:theme="@style/Theme.Android.AppWidgetContainer"
     tools:ignore="ContentDescription,HardcodedText">
+    <!-- android:background="@android:color/transparent" -->
 
     <RelativeLayout 
         android:layout_width="match_parent"