[Kotlin] 음악 재생 프로그램 만들기

 

MainActivity.kt 소스 코드

package com.example.musicserviceapp

import android.content.Intent
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import android.widget.Button

class MainActivity : AppCompatActivity() {
    lateinit var soundIntent:Intent
    lateinit var btnStart :Button
    lateinit var btnStop:Button

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        soundIntent = Intent(this, MusicService::class.java)
        btnStart = findViewById(R.id.btnStart)
        btnStop = findViewById(R.id.btnStop)

        btnStart.setOnClickListener{
            startService(soundIntent)
            Log.i("서비스 테스트", "startService()")

        }

        btnStop.setOnClickListener {
            stopService(soundIntent)
            Log.i("서비스 테스트", "stopService()")
        }
    }
}

 

 

activity_main.xml 소스 코드

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">

   <Button
       android:id="@+id/btnStart"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:text="음악서비스 시작"/>

    <Button
        android:id="@+id/btnStop"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="음악서비스 중지"/>

</LinearLayout>

 

Musicservice.kt 소스코드

package com.example.musicserviceapp

import android.app.Service
import android.content.Intent
import android.media.MediaPlayer
import android.os.IBinder
import android.util.Log

class MusicService : Service() {
    lateinit var mp : MediaPlayer

    override fun onBind(intent: Intent): IBinder? {
        return null
    }

    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {

        Log.i("서비스 테스트", "onStartCommand()")

        mp=MediaPlayer.create(this, R.raw.song)
        mp.isLooping=true
        mp.start()

        return super.onStartCommand(intent, flags, startId)
    }

    override fun onCreate(){
        Log.i("서비스 테스트", "onCreate()")

        super.onCreate()
    }

    override fun onDestroy() {
        Log.i("서비스 테스트", "onDestroy()")
        mp.stop()
        super.onDestroy()
    }

}