Able to play and pause a songs

app/src/main/AndroidManifest.xml

@@ -21,4 +21,6 @@
         </activity>
     </application>
 
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
+
 </manifest>

app/src/main/java/com/example/mear/MainActivity.kt

@@ -9,8 +9,13 @@ import android.support.v7.app.AppCompatActivity;
 import kotlinx.android.synthetic.main.activity_main.*
 import kotlinx.android.synthetic.main.content_main.*
 import java.io.File
+import java.lang.Exception
+import java.nio.file.Files
 import kotlin.io.*
 
+import com.example.mear.management.MusicFiles
+import kotlin.random.Random
+
 class MainActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -18,6 +23,8 @@ class MainActivity : AppCompatActivity() {
         setContentView(R.layout.activity_main)
         setSupportActionBar(toolbar)
 
+        loadSongs()
+
         initializeMediaPlayer()
 
         PlayTrack.setOnClickListener {
@@ -29,19 +36,63 @@ class MainActivity : AppCompatActivity() {
     fun configureSongs() {
 
     }
+    fun configureDemoSong() {
+        val sdC = "sdcard0/"
+        var musicPath = "music/"
+        var artistPath = "Flueric/"
+        var albumPath = "New Death of a Phoenix/"
+        var songPath = "Qualm.mp3"
+        val pa = demoPath!!.absoluteFile.toString() + "/" + musicPath + artistPath + albumPath +
+                songPath
+        try {
+            var fl = File(pa)
+            if (fl.exists()) {
+                TrackPayer!!.setDataSource(pa)
+            }
+        }
+        catch (ex: Exception) {
+            var exMsg = ex.message
+        }
+    }
+
 
     fun initializeMediaPlayer() {
         if (TrackPayer == null) {
             TrackPayer = MediaPlayer()
+            playerInitialized = true
+            TrackPayer!!.setDataSource(allSongs!![currentSong!!])
+            TrackPayer!!.prepare()
         }
-        File("/").walkTopDown().forEach { print(it) }
     }
 
     fun playSongTrack() {
 
+        try {
+            if (!TrackPayer!!.isPlaying) {
+                TrackPayer!!.start()
+                var musicData = TrackPayer!!.trackInfo
+                println("ss")
+            } else {
+                TrackPayer!!.pause()
+            }
+        }
+        catch (ex: Exception) {
+            val exMsg = ex.message
+        }
     }
 
 
-    var TrackPayer: MediaPlayer? = null
+    private fun loadSongs() {
-    var sysPath = Environment.getRootDirectory()
+        val mfPaths =  MusicFiles(this.demoPath!!)
+        mfPaths.loadAllMusicPaths()
+        allSongs = mfPaths.allSongs
+        val songIndex = Random.nextInt(0, allSongs!!.size - 1)
+        currentSong = songIndex
+    }
+
+    private var TrackPayer: MediaPlayer? = null
+    private var demoPath: File? =   Environment .getExternalStorageDirectory()
+    private var allSongs: MutableList<String>? = null
+    private var currentSong: Int? = null
+    private var playerInitialized: Boolean? = null
 }

app/src/main/java/com/example/mear/management/MusicFiles.kt

@@ -0,0 +1,65 @@
+package com.example.mear.management
+
+import android.os.Environment
+import java.io.File
+import java.lang.Exception
+import kotlin.io.*
+
+class MusicFiles (val demoPath:  File) {
+
+
+    fun loadAllMusicPaths() {
+        try {
+            allSongs = mutableListOf()
+            val demoPath = this.demoPath.absoluteFile.toString() +"/music/"
+            val f = File(demoPath)
+            var count = 0
+
+            val folder = f
+            val listOfFiles = folder.listFiles()
+
+            for (i in listOfFiles) {
+                for (j in i.listFiles()) {
+                    if (j.absolutePath.toString().contains("zip")) {
+                        println("zip file")
+                    }
+                    for (k in j.listFiles()) {
+                        println("What's good?")
+                        if (k.absolutePath.toString().contains("mp3")) {
+                            allSongs!!.add(k.absolutePath.toString())
+                            count++
+                        }
+                        else {
+                            println("Stranger")
+                        }
+                    }
+                }
+            }
+            songCount = count
+        }
+        catch (ex: Exception) {
+            var exMsg = ex.message
+        }
+    }
+    fun configureDemoSong() {
+        val sdC = "sdcard0/"
+        var musicPath = "music/"
+        var artistPath = "Flueric/"
+        var albumPath = "New Death of a Phoenix/"
+        var songPath = "Qualm.mp3"
+        val pa = demoPath.absoluteFile.toString() + "/" + musicPath + artistPath + albumPath +
+                songPath
+        try {
+            var fl = File(pa)
+            if (fl.exists()) {
+            }
+        }
+        catch (ex: Exception) {
+            var exMsg = ex.message
+        }
+    }
+
+
+    var allSongs: MutableList<String>?= null
+    var songCount: Int? = null
+}

app/src/main/java/com/example/mear/models/Track.kt

@@ -0,0 +1,5 @@
+package com.example.mear.models
+
+class Track (val id: Int, val title: String, val artist: String, val album: String,
+             val TrackCover: ByteArray) {
+}