From ebd9395495a3b7cf4424c392a4573aab04b00f51 Mon Sep 17 00:00:00 2001
From: sahar <sahmaisary@yahoo.com>
Date: Wed, 9 Feb 2022 19:23:28 +0100
Subject: [PATCH] Production Code of UsbPlayer.prev() implemented

---
 src/main/java/device/usbPlayer/UsbPlayer.java | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/main/java/device/usbPlayer/UsbPlayer.java b/src/main/java/device/usbPlayer/UsbPlayer.java
index 75f6a21..0a6e75d 100644
--- a/src/main/java/device/usbPlayer/UsbPlayer.java
+++ b/src/main/java/device/usbPlayer/UsbPlayer.java
@@ -118,7 +118,12 @@ public class UsbPlayer implements Device {
 
     @Override
     public void prev() {
-
+        int currentIdex = Playlist.indexOf(playTrack);
+        int nextIndex = Playlist.size() - 1;
+        if (currentIdex != 0) {
+            nextIndex = (currentIdex - 1);
+        }
+        playTrack = Playlist.get(nextIndex);
     }
 
     @Override