[simba/#23] feat::5주차 구현 완료

mediaplayer 구현
sharedpreferences 구현

UMC_6th/app/build.gradle.kts

@@ -47,6 +47,7 @@ dependencies {
     implementation("androidx.appcompat:appcompat:1.6.1")
     implementation("com.google.android.material:material:1.11.0")
     implementation("androidx.constraintlayout:constraintlayout:2.1.4")
+    implementation("com.squareup.retrofit2:converter-gson:2.9.0")
     testImplementation("junit:junit:4.13.2")
     androidTestImplementation("androidx.test.ext:junit:1.1.5")
     androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")

UMC_6th/app/src/main/java/com/example/umc_6th/MainActivity.kt

@@ -8,28 +8,23 @@ import android.widget.Toast
 import androidx.activity.result.ActivityResultLauncher
 import androidx.activity.result.contract.ActivityResultContracts
 import com.example.umc_6th.databinding.ActivityMainBinding
+import com.google.gson.Gson
 
 class MainActivity : AppCompatActivity() {
 
     lateinit var binding: ActivityMainBinding
     lateinit var activityResultLauncher: ActivityResultLauncher<Intent>
+    private var song : Song = Song()
+    private var gson : Gson = Gson()
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setTheme(R.style.SplashTheme)
+        setTheme(R.style.Theme_UMC_6th)
         binding = ActivityMainBinding.inflate(layoutInflater)
         setContentView(binding.root)
 
         initBottomNavigation()
 
-        val song = Song(
-            binding.mainMiniplayerTitleTv.text.toString(),
-            binding.mainMiniplayerSingerTv.text.toString(),
-            0,
-            60,
-            false
-        )
-
         activityResultLauncher =
             registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
                 if (result.resultCode == RESULT_OK) {
@@ -49,6 +44,7 @@ class MainActivity : AppCompatActivity() {
             intent.putExtra("second", song.second)
             intent.putExtra("playTime", song.playTime)
             intent.putExtra("isPlaying", song.isPlaying)
+            intent.putExtra("music",song.music)
 //            startActivity(intent)
             activityResultLauncher.launch(intent)
         }
@@ -94,4 +90,21 @@ class MainActivity : AppCompatActivity() {
             false
         }
     }
+    override fun onStart() {
+        super.onStart()
+        val sharedPreferences = getSharedPreferences("song", MODE_PRIVATE)
+        val jsonToSong = sharedPreferences.getString("songData", null)
+        Log.d("jsonToSong", jsonToSong.toString())
+        song = if(jsonToSong == null) { // 최초 실행 시
+            Song("라일락", "아이유(IU)", 0, 60, false, "music_lilac")
+        } else { // SongActivity에서 노래가 한번이라도 pause 된 경우
+            gson.fromJson(jsonToSong, Song::class.java)
+        }
+        setMiniPlayer(song)
+    }
+    private fun setMiniPlayer(song : Song) {
+        binding.mainMiniplayerTitleTv.text = song.title
+        binding.mainMiniplayerSingerTv.text = song.singer
+        binding.mainMiniplayerProgressSb.progress = (song.second * 100000 / song.playTime)
+    }
 }

UMC_6th/app/src/main/java/com/example/umc_6th/Song.kt

@@ -5,5 +5,6 @@ data class Song(
     val singer : String = "",
     var second : Int = 0,
     var playTime : Int = 60,
-    var isPlaying : Boolean = false
+    var isPlaying : Boolean = false,
+    var music : String = ""
 )

UMC_6th/app/src/main/java/com/example/umc_6th/SongActivity.kt

@@ -1,11 +1,13 @@
 package com.example.umc_6th
 
 import android.content.Intent
+import android.media.MediaPlayer
 import android.os.Bundle
 import android.util.Log
 import android.view.View
 import androidx.appcompat.app.AppCompatActivity
 import com.example.umc_6th.databinding.ActivitySongBinding
+import com.google.gson.Gson
 import java.util.Timer
 
 class SongActivity : AppCompatActivity() {
@@ -14,6 +16,9 @@ class SongActivity : AppCompatActivity() {
     lateinit var song: Song
     lateinit var timer : Timer
 
+    private var mediaPlayer : MediaPlayer? = null
+    private var gson : Gson = Gson()
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         binding = ActivitySongBinding.inflate(layoutInflater) // binding 초기화
@@ -47,14 +52,36 @@ class SongActivity : AppCompatActivity() {
         }
     }
 
+    override fun onPause() {
+        super.onPause()
+        setPlayerStatus(false)
+
+        song.second = (song.playTime * binding.songProgressSb.progress) / 100000
+        val sharedPreferences = getSharedPreferences("song", MODE_PRIVATE)
+        val editor = sharedPreferences.edit()
+        val songToJson = gson.toJson(song)
+        editor.putString("songData", songToJson)
+        Log.d("songData", songToJson.toString())
+        editor.apply()
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        timer.interrupt()
+        mediaPlayer?.release() // 미디어 플레이어가 갖고 있던 리소스를 해제한다.
+        mediaPlayer = null // 미디어 플레이어를 해제한다.
+    }
+
+
     private fun initSong(){
         if(intent.hasExtra("title") && intent.hasExtra("singer")){
             song = Song(
                 intent.getStringExtra("title")!!,
                 intent.getStringExtra("singer")!!,
                 intent.getIntExtra("second",0),
                 intent.getIntExtra("playTime",0),
-                intent.getBooleanExtra("isPlaying",false)
+                intent.getBooleanExtra("isPlaying",false),
+                intent.getStringExtra("music")!!
             )
         }
         startTimer()
@@ -67,19 +94,26 @@ class SongActivity : AppCompatActivity() {
         binding.songEndTimeTv.text = String.format("%02d:%02d",song.playTime / 60,song.playTime % 60)
         binding.songProgressSb.progress = (song.second * 1000 / song.playTime)
 
+        val music = resources.getIdentifier(song.music,"raw",this.packageName)
+        mediaPlayer = MediaPlayer.create(this,music)
         setPlayerStatus(song.isPlaying)
     }
 
     fun setPlayerStatus(isPlaying : Boolean){
         song.isPlaying = isPlaying
         timer.isPlaying = isPlaying
 
-        if(isPlaying){
+        if(isPlaying){ // 재생중
             binding.songMiniplayerIv.visibility= View.GONE
             binding.songPauseIv.visibility = View.VISIBLE
-        } else{
+            mediaPlayer?.start()
+        } else{ // 일시정지
             binding.songMiniplayerIv.visibility=View.VISIBLE
             binding.songPauseIv.visibility = View.GONE
+
+            if(mediaPlayer?.isPlaying == true){
+                mediaPlayer?.pause()
+            }
         }
     }
 

UMC_6th/app/src/main/res/layout/activity_main.xml

@@ -17,11 +17,11 @@
     <SeekBar
         android:id="@+id/main_miniplayer_progress_sb"
         android:layout_width="match_parent"
-        android:layout_height="0dp"
+        android:layout_height="10dp"
         android:background="@null"
         android:paddingEnd="0dp"
         android:paddingStart="0dp"
-        android:layout_marginBottom="-3dp"
+        android:layout_marginBottom="-4dp"
         android:progressBackgroundTint="@color/song_player_bg"
         android:progressTint="@color/song_player"
         android:progress="0"