Release shrink fixes: unsafe features & camera focus marker

app/build.gradle

@@ -24,6 +24,8 @@ android {
 
     buildTypes {
         release {
+            minifyEnabled true
+            shrinkResources true
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }

app/proguard-rules.pro

@@ -19,3 +19,10 @@
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
+
+-keepattributes InnerClasses
+-keep class sushi.hardcore.droidfs.SettingsActivity$** {
+    *;
+}
+-keep class sushi.hardcore.droidfs.explorers.ExplorerElement
+-keep class com.otaliastudios.cameraview.markers.DefaultAutoFocusMarker

app/src/main/AndroidManifest.xml

@@ -7,12 +7,13 @@
         android:name="${applicationId}.WRITE_TEMPORARY_STORAGE"
         android:protectionLevel="signature" />
 
-    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.USE_FINGERPRINT" />
     <uses-permission android:name="android.permission.USE_BIOMETRIC" />
+    <uses-feature android:name="android.hardware.camera.any" android:required="false"/>
+    <uses-feature android:name="android.hardware.fingerprint" android:required="false"/>
 
-    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" tools:node="remove"/>
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" tools:node="remove"/> <!--removing this permission automatically added by exoplayer-->
 
     <application
         android:name=".ColoredApplication"

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

@@ -15,6 +15,7 @@
         app:cameraAutoFocusMarker="@string/cameraview_default_autofocus_marker"
         app:cameraHdr="on"
         app:cameraPictureFormat="jpeg"
+        app:cameraPlaySounds="false"
         app:cameraAudio="off"/>
 
     <androidx.constraintlayout.widget.ConstraintLayout