Implemented repeat functionality #23 and added functionality to change the current position of the song via the seekbar #27

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

@@ -17,6 +17,8 @@ import android.widget.Toast
 import java.lang.Exception
 import java.lang.Runnable
 import java.util.concurrent.TimeUnit
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.runBlocking
 import kotlin.io.*
 import kotlinx.android.synthetic.main.activity_main.*
 import kotlinx.android.synthetic.main.fragment_play_controls.*
@@ -28,11 +30,10 @@ import kotlinx.android.synthetic.main.fragment_track_flow.*
 import org.jetbrains.anko.image
 import org.jetbrains.anko.imageBitmap
 
+import com.example.mear.listeners.TrackElaspingChange
 import com.example.mear.playback.service.MusicService
-import com.example.mear.R
 import com.example.mear.models.PlayControls
-import kotlinx.coroutines.launch
+import com.example.mear.R
-import kotlinx.coroutines.runBlocking
 
 
 class MainActivity : AppCompatActivity() {
@@ -88,6 +89,14 @@ class MainActivity : AppCompatActivity() {
             val exMsg = ex.message
         }
     }
+    private fun initializeChangeListeners() {
+        val newListener = TrackElaspingChange(TrackElapsing)
+        if (musicService != null) {
+            newListener.musicService = musicService
+            newListener.initialize()
+            TrackElapsing.setOnSeekBarChangeListener(newListener)
+        }
+    }
     private fun initializeClickListeners() {
         PlayTrack.setOnClickListener {
             playSongTrack()
@@ -280,19 +289,13 @@ class MainActivity : AppCompatActivity() {
 
     private var musicTrackTimeUpdateTask = object: Runnable {
        override fun run() {
-
            try {
-           var newPosition = 0
                val currentPosition = musicService!!.currentPositionOfTrack() / 1000
-           val totalDuration = musicService!!.durationOfTrack() / 1000
+               val dur = String.format( "%02d:%02d",
-           newPosition = (((currentPosition).toDouble() / totalDuration) * 100).toInt()
+                                                                TimeUnit.SECONDS.toMinutes(currentPosition.toLong()),
-           val dur = String.format(
+                                                                (currentPosition % 60) )
-               "%02d:%02d", TimeUnit.SECONDS.toMinutes(currentPosition.toLong()),
-               (currentPosition % 60)
-           )
-           CurrentPosition.text = dur
 
-           TrackElapsing.progress = newPosition
+               CurrentPosition.text = dur
 
                if (TrackCover.image  == null && musicService!!.isPlaying()) {
                    configureTrackDisplay()
@@ -313,6 +316,7 @@ class MainActivity : AppCompatActivity() {
             runBlocking {
                 val demo = launch {
                     musicService = (service as MusicService.LocalBinder).service
+                    initializeChangeListeners()
                 }
                 demo.start()
             }
@@ -321,11 +325,6 @@ class MainActivity : AppCompatActivity() {
                     configureTrackDisplay()
                 }
             }
-
-            Toast.makeText(
-                this@MainActivity, "Music Service Started",
-                Toast.LENGTH_SHORT
-            ).show()
         }
 
         override fun onServiceDisconnected(className: ComponentName) {

app/src/main/java/com/example/mear/listeners/TrackElaspingChange.kt

@@ -0,0 +1,63 @@
+package com.example.mear.listeners
+
+import android.os.Handler
+import android.widget.SeekBar
+
+import java.lang.Exception
+import java.util.concurrent.TimeUnit
+
+import com.example.mear.playback.service.MusicService
+import com.example.mear.util.ConvertTrackPosition
+
+
+class TrackElaspingChange(var seekBar: SeekBar?): SeekBar.OnSeekBarChangeListener {
+
+    var musicService: MusicService? = null
+    var mHandler: Handler? = Handler()
+
+    override fun onStartTrackingTouch(seekBar: SeekBar?) {
+        this.seekBar = seekBar
+    }
+    override fun onStopTrackingTouch(seekBar: SeekBar?) {
+        this.seekBar = seekBar
+        val newPositionPercentage = this.seekBar!!.progress
+        var convertPosition =  ConvertTrackPosition(newPositionPercentage)
+        val newPosition = convertPosition.newPosition(musicService!!.durationOfTrack())
+        musicService!!.goToPosition(newPosition)
+        this.seekBar!!.progress = newPosition
+    }
+    override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
+        this.seekBar = seekBar
+
+        if (fromUser ){
+
+            mHandler!!.postDelayed( musicTrackTimeUpdateTask, 250)
+        }
+    }
+
+    fun initialize() {
+        mHandler!!.postDelayed(musicTrackTimeUpdateTask, 250)
+    }
+
+    private var musicTrackTimeUpdateTask = object: Runnable {
+        override fun run() {
+            try {
+                var newPosition = 0
+                val currentPosition = musicService!!.currentPositionOfTrack() / 1000
+                val totalDuration = musicService!!.durationOfTrack() / 1000
+                newPosition = (((currentPosition).toDouble() / totalDuration) * 100).toInt()
+                val dur = String.format(
+                    "%02d:%02d", TimeUnit.SECONDS.toMinutes(currentPosition.toLong()),
+                    (currentPosition % 60)
+                )
+
+                seekBar!!.progress = newPosition
+
+                mHandler!!.postDelayed(this, 250)
+            }
+            catch (ex: Exception) {
+                val exMsg = ex.message
+            }
+        }
+    }
+}

app/src/main/java/com/example/mear/playback/service/MusicService.kt

@@ -5,13 +5,11 @@ import android.content.Intent
 import android.media.MediaPlayer
 import android.os.Binder
 import android.os.IBinder
-import android.os.Looper
 import android.widget.Toast
 
 import java.lang.Exception
 import kotlin.random.Random
 
-import com.example.mear.management.DatabaseManager
 import com.example.mear.management.MusicFiles
 import com.example.mear.management.TrackManager
 import com.example.mear.models.PlayControls
@@ -65,7 +63,9 @@ class MusicService: Service() {
     }
 
 
-
+    fun goToPosition(progress: Int) {
+        trackPlayer!!.seekTo(progress)
+    }
     fun playSongTrack() {
         try {
             trackPlayer!!.start()

app/src/main/java/com/example/mear/util/ConvertTrackPosition.kt

@@ -0,0 +1,11 @@
+package com.example.mear.util
+
+
+class ConvertTrackPosition(val percentage: Int) {
+
+    fun newPosition(trackDuration: Int): Int {
+        val newPosition = (trackDuration * (percentage.toDouble() / 100)).toInt()
+
+        return newPosition
+    }
+}