Karakurik · Karakurik · Dec 5, 2021
diff --git a/app/build.gradle b/app/build.gradle
@@ -1,15 +1,16 @@
 plugins {
     id 'com.android.application'
     id 'kotlin-android'
+    id 'kotlin-parcelize'
 }
 
 android {
-    compileSdk 30
+    compileSdk 31
 
     defaultConfig {
         applicationId "com.itis.androidlabproject"
         minSdk 23
-        targetSdk 30
+        targetSdk 31
         versionCode 1
         versionName "1.0"
 
@@ -37,12 +38,13 @@ android {
 
 dependencies {
 
-    implementation 'androidx.core:core-ktx:1.6.0'
-    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'androidx.core:core-ktx:1.7.0'
+    implementation 'androidx.appcompat:appcompat:1.4.0'
     implementation 'com.google.android.material:material:1.4.0'
-    implementation 'androidx.constraintlayout:constraintlayout:2.1.1'
-    implementation 'android.arch.navigation:navigation-fragment:2.3.5'
-    implementation 'android.arch.navigation:navigation-ui:2.3.5'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.2'
+    implementation 'androidx.navigation:navigation-fragment-ktx:2.3.5'
+    implementation 'androidx.navigation:navigation-ui-ktx:2.3.5'
+    implementation "androidx.media:media:1.2.0"
     testImplementation 'junit:junit:4.+'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'

diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     package="com.itis.androidlabproject">
 
     <application
@@ -10,14 +11,18 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.AndroidLabProject">
         <activity
-            android:name=".MainActivity"
+            android:name=".view.MainActivity"
             android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <service
+            android:name=".services.MusicService"
+            android:exported="false"
+            tools:ignore="Instantiatable" />
     </application>
 
 </manifest>
diff --git a/app/src/main/aidl/com/itis/androidlabproject/IMyMusicInterface.aidl b/app/src/main/aidl/com/itis/androidlabproject/IMyMusicInterface.aidl
@@ -0,0 +1,16 @@
+// IMyMusicInterface.aidl
+package com.itis.androidlabproject;
+
+// Declare any non-default types here with import statements
+
+interface IMyMusicInterface {
+    /**
+     * Demonstrates some basic types that you can use as parameters
+     * and return values in AIDL.
+     */
+    void playPreviousTrack();
+    void playNextTrack();
+    void pauseTrack();
+    void playTrack();
+    void setTrack(int id);
+}
diff --git a/app/src/main/java/com/itis/androidlabproject/MainActivity.kt b/app/src/main/java/com/itis/androidlabproject/MainActivity.kt
diff --git a/app/src/main/java/com/itis/androidlabproject/adapter/TrackHolder.kt b/app/src/main/java/com/itis/androidlabproject/adapter/TrackHolder.kt
@@ -0,0 +1,46 @@
+package com.itis.androidlabproject.adapter
+
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.recyclerview.widget.RecyclerView
+import com.itis.androidlabproject.databinding.TrackListItemBinding
+import com.itis.androidlabproject.models.Track
+
+class TrackHolder(
+    private val binding: TrackListItemBinding,
+    private val itemClick: (Int) -> (Unit)
+) : RecyclerView.ViewHolder(binding.root) {
+
+    private var trackToDisplay: Track? = null
+
+
+    init {
+        itemView.setOnClickListener {
+            trackToDisplay?.also {
+                itemClick(it.id)
+            }
+        }
+    }
+
+    fun bind(track: Track) {
+        trackToDisplay = track
+        with(binding) {
+            trackListItemTitle.text = track.title
+            trackListItemAuthor.text = track.author
+            trackListItemCover.setImageResource(track.cover)
+        }
+    }
+
+    companion object {
+        fun create(
+            parent: ViewGroup,
+            itemClick: (Int) -> Unit
+        ) = TrackHolder(
+            TrackListItemBinding.inflate(
+                LayoutInflater.from(parent.context),
+                parent,
+                false
+            ), itemClick
+        )
+    }
+}
diff --git a/app/src/main/java/com/itis/androidlabproject/adapter/TrackListAdapter.kt b/app/src/main/java/com/itis/androidlabproject/adapter/TrackListAdapter.kt
@@ -0,0 +1,21 @@
+package com.itis.androidlabproject.adapter
+
+import android.view.ViewGroup
+import androidx.recyclerview.widget.RecyclerView
+import com.itis.androidlabproject.models.Track
+
+class TrackListAdapter(
+    private val trackList: ArrayList<Track>,
+    private val itemClick: (Int) -> (Unit)
+
+) : RecyclerView.Adapter<TrackHolder>() {
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): TrackHolder {
+        return TrackHolder.create(parent, itemClick)
+    }
+
+    override fun onBindViewHolder(holder: TrackHolder, position: Int) {
+        holder.bind(trackList[position])
+    }
+
+    override fun getItemCount() = trackList.size
+}
diff --git a/app/src/main/java/com/itis/androidlabproject/decorator/SpaceItemDecorator.kt b/app/src/main/java/com/itis/androidlabproject/decorator/SpaceItemDecorator.kt
@@ -0,0 +1,45 @@
+package com.itis.androidlabproject.decorator
+
+import android.content.Context
+import android.graphics.Rect
+import android.util.TypedValue
+import android.view.View
+import androidx.recyclerview.widget.RecyclerView
+
+class SpaceItemDecorator(
+    context: Context,
+    spacing: Float = 16f,
+) : RecyclerView.ItemDecoration() {
+
+    private val spacingPx: Int = TypedValue.applyDimension(
+        TypedValue.COMPLEX_UNIT_DIP,
+        spacing,
+        context.resources.displayMetrics
+    ).toInt()
+
+    override fun getItemOffsets(
+        outRect: Rect,
+        view: View,
+        parent: RecyclerView,
+        state: RecyclerView.State
+    ) {
+        val position = parent.getChildAdapterPosition(view)
+        val spacingMiddle: Int = spacingPx / 2
+        when (position) {
+            0 -> {
+                outRect.top = spacingPx
+                outRect.bottom = spacingMiddle
+            }
+            state.itemCount - 1 -> {
+                outRect.top = spacingMiddle
+                outRect.bottom = spacingPx
+            }
+            else -> {
+                outRect.top = spacingMiddle
+                outRect.bottom = spacingMiddle
+            }
+        }
+        outRect.left = spacingPx
+        outRect.right = spacingPx
+    }
+}
diff --git a/app/src/main/java/com/itis/androidlabproject/extensions/ActivityExt.kt b/app/src/main/java/com/itis/androidlabproject/extensions/ActivityExt.kt
@@ -0,0 +1,10 @@
+package com.itis.androidlabproject.extensions
+
+import androidx.appcompat.app.AppCompatActivity
+import androidx.fragment.app.Fragment
+import androidx.navigation.NavController
+import androidx.navigation.fragment.NavHostFragment
+
+fun AppCompatActivity.findController (id: Int) : NavController {
+    return (supportFragmentManager.findFragmentById(id) as NavHostFragment).navController
+}
diff --git a/app/src/main/java/com/itis/androidlabproject/fragments/TrackDetailsFragment.kt b/app/src/main/java/com/itis/androidlabproject/fragments/TrackDetailsFragment.kt
@@ -0,0 +1,146 @@
+package com.itis.androidlabproject.fragments
+
+import android.content.ComponentName
+import android.content.Intent
+import android.content.ServiceConnection
+import android.os.Bundle
+import android.os.IBinder
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.appcompat.app.AppCompatActivity
+import androidx.constraintlayout.widget.ConstraintLayout
+import androidx.fragment.app.Fragment
+import com.itis.androidlabproject.IMyMusicInterface
+import com.itis.androidlabproject.R
+import com.itis.androidlabproject.databinding.FragmentTrackDetailsBinding
+import com.itis.androidlabproject.models.Track
+import com.itis.androidlabproject.repository.TrackRepository
+import com.itis.androidlabproject.services.MusicService
+
+class TrackDetailsFragment : Fragment(R.layout.fragment_track_details) {
+    private var binding: FragmentTrackDetailsBinding? = null
+
+    private var binderAidl: IMyMusicInterface? = null
+
+    private val connectionAidl =object : ServiceConnection {
+        override fun onServiceConnected(
+            name: ComponentName?,
+            service: IBinder?
+        ) {
+            binderAidl = IMyMusicInterface.Stub.asInterface(service)
+            initView()
+        }
+
+        override fun onServiceDisconnected(
+            name: ComponentName?
+        ) {
+            binderAidl = null
+        }
+    }
+
+    private var currentTrack: Track? = null
+
+    private fun initView() {
+        val id = arguments?.getInt("trackId")
+
+        id?.let {
+            currentTrack = TrackRepository.tracksList[id]
+        }
+
+        binding?.run {
+            tvTitle.text = currentTrack?.title
+            tvAuthor.text = currentTrack?.author
+            currentTrack?.cover?.let { ivCover.setImageResource(it) }
+        }
+
+        initMusicNavigationView(id)
+    }
+
+    private fun initMusicNavigationView(id: Int?) {
+        id?.let {id ->
+            binderAidl?.setTrack(id)
+            binderAidl?.playTrack()
+
+            binding?.run {
+                btnPlay.setOnClickListener {
+                    binderAidl?.playTrack()
+                    showPauseButton()
+                }
+                btnPrevious.setOnClickListener {
+                    binderAidl?.playPreviousTrack()
+                    if (id== 0) {
+                        updateView(TrackRepository.tracksList.size-1)
+                    } else {
+                        updateView(id-1)
+                    }
+                }
+                btnNext.setOnClickListener {
+                    binderAidl?.playNextTrack()
+                    if (id == TrackRepository.tracksList.size-1) {
+                        updateView(0)
+                    } else {
+                        updateView(id+1)
+                    }
+                }
+                btnPause.setOnClickListener {
+                    binderAidl?.pauseTrack()
+                    showPlayButton()
+                }
+            }
+        }
+    }
+
+    private fun updateView(id:Int){
+        id.let {
+            currentTrack = TrackRepository.tracksList[id];
+        }
+
+        binding?.run {
+            tvTitle.text = currentTrack?.title
+            tvAuthor.text = currentTrack?.author
+            currentTrack?.cover?.let { ivCover.setImageResource(it) }
+        }
+
+        showPauseButton()
+        initMusicNavigationView(id)
+    }
+
+
+    private fun showPauseButton(){
+        binding?.run {
+            btnPlay.visibility = View.GONE
+            btnPause.visibility = View.VISIBLE
+        }
+    }
+
+    private fun showPlayButton(){
+        binding?.run {
+            btnPause.visibility = View.GONE
+            btnPlay.visibility = View.VISIBLE
+        }
+    }
+
+
+    override fun onViewCreated(
+        view: View,
+        savedInstanceState: Bundle?
+    ) {
+        super.onViewCreated(view, savedInstanceState)
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): ConstraintLayout? {
+        binding = FragmentTrackDetailsBinding.inflate(inflater, container, false)
+        activity?.bindService(
+            Intent(activity, MusicService::class.java),
+            connectionAidl,
+            AppCompatActivity.BIND_AUTO_CREATE
+        )
+        return binding?.root
+    }
+}