use the un/hide icons from Commons library

app/build.gradle

@@ -47,7 +47,7 @@ ext {
 }
 
 dependencies {
-    implementation 'com.simplemobiletools:commons:4.4.1'
+    implementation 'com.simplemobiletools:commons:4.4.10'
     implementation 'com.theartofdev.edmodo:android-image-cropper:2.7.0'
     implementation 'com.android.support:multidex:1.0.3'
     implementation 'it.sephiroth.android.exif:library:1.0.1'

app/src/main/kotlin/com/simplemobiletools/gallery/adapters/DirectoryAdapter.kt

@@ -99,9 +99,9 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
             R.id.cab_rename -> renameDir()
             R.id.cab_pin -> pinFolders(true)
             R.id.cab_unpin -> pinFolders(false)
-            R.id.cab_hide -> toggleFoldersVisibility(true)
             R.id.cab_empty_recycle_bin -> emptyRecycleBin()
             R.id.cab_empty_disable_recycle_bin -> emptyAndDisableRecycleBin()
+            R.id.cab_hide -> toggleFoldersVisibility(true)
             R.id.cab_unhide -> toggleFoldersVisibility(false)
             R.id.cab_exclude -> tryExcludeFolder()
             R.id.cab_copy_to -> copyMoveTo(true)

app/src/main/kotlin/com/simplemobiletools/gallery/extensions/Activity.kt

@@ -151,6 +151,11 @@ fun BaseSimpleActivity.removeNoMedia(path: String, callback: (() -> Unit)? = nul
 fun BaseSimpleActivity.toggleFileVisibility(oldPath: String, hide: Boolean, callback: ((newPath: String) -> Unit)? = null) {
     val path = oldPath.getParentPath()
     var filename = oldPath.getFilenameFromPath()
+    if ((hide && filename.startsWith('.')) || (!hide && !filename.startsWith('.'))) {
+        callback?.invoke(oldPath)
+        return
+    }
+
     filename = if (hide) {
         ".${filename.trimStart('.')}"
     } else {

app/src/main/kotlin/com/simplemobiletools/gallery/fragments/VideoFragment.kt

@@ -406,7 +406,6 @@ class VideoFragment : ViewPagerFragment(), TextureView.SurfaceTextureListener, S
         mView?.video_play_outline?.setImageResource(R.drawable.ic_play)
         mView?.video_play_outline?.alpha = PLAY_PAUSE_VISIBLE_ALPHA
         activity?.window?.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
-
     }
 
     private fun videoEnded() = mExoPlayer!!.currentPosition >= mExoPlayer!!.duration

build.gradle

@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.2.50'
+    ext.kotlin_version = '1.2.51'
 
     repositories {
         jcenter()