🙆🏻 Woof that's done it Playlist

Code refactor to Kotlin

app/src/main/java/code/name/monkey/retromusic/interfaces/Callbacks.kt

@@ -0,0 +1,13 @@
+package code.name.monkey.retromusic.interfaces
+
+import android.view.MenuItem
+import android.view.View
+import java.io.File
+
+interface Callbacks {
+    fun onFileSelected(file: File)
+
+    fun onFileMenuClicked(file: File, view: View)
+
+    fun onMultipleItemAction(item: MenuItem, files: ArrayList<File>)
+}