fix bug https://github.com/AriaLyy/Aria/issues/414

fix bug https://github.com/AriaLyy/Aria/issues/406

app/src/main/res/drawable/bg_loading.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+  <solid android:color="#99000000"/>
+  <corners android:radius="8dp"/>
+</shape>

app/src/main/res/layout/activity_download_group.xml

@@ -15,6 +15,11 @@
         name="progress"
         type="int"
         />
+    <variable
+        name="stateStr"
+        type="String"
+        />
+
   </data>
 
   <RelativeLayout
@@ -26,7 +31,7 @@
     <include layout="@layout/layout_bar"/>
 
     <include
-        layout="@layout/content_single"
+        layout="@layout/layout_content_single"
         android:id="@+id/content"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
@@ -34,6 +39,7 @@
         bind:fileSize="@{fileSize}"
         bind:progress="@{progress}"
         bind:speed="@{speed}"
+        bind:stateStr="@{stateStr}"
         />
 
     <com.arialyy.simple.widget.SubStateLinearLayout

app/src/main/res/layout/dialog_loading.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout xmlns:android="http://schemas.android.com/apk/res/android">
+
+  <RelativeLayout
+      android:layout_width="120dp"
+      android:layout_height="120dp"
+      android:background="@drawable/bg_loading"
+      android:orientation="vertical"
+      >
+
+    <ProgressBar
+        android:layout_width="80dp"
+        android:layout_height="80dp"
+        android:layout_centerInParent="true"
+        />
+
+
+  </RelativeLayout>
+</layout>

app/src/main/res/layout/fragment_video_player.xml

@@ -12,7 +12,7 @@
     <SurfaceView
         android:id="@+id/surface_view"
         android:layout_width="match_parent"
-        android:layout_height="200dp"
+        android:layout_height="240dp"
         />
 
 
@@ -31,7 +31,8 @@
           android:layout_height="wrap_content"
           android:layout_centerVertical="true"
           android:clickable="true"
-          app:srcCompat="@drawable/ic_start"
+          android:visibility="visible"
+          app:srcCompat="@drawable/selector_start_stop_bt"
           />
 
       <SeekBar