음악재생

08 Dec 2021 in Study on Android

음악

문제

activity_main.xml

<?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">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:padding="20dp"
        android:text="음악 서비스 테스트" android:textSize="20sp" />
    <Button
        android:id="@+id/start"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="시작" >
    </Button>
    <Button
        android:id="@+id/stop"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="중지" >
    </Button>

</LinearLayout>

MainActivity.java

import androidx.appcompat.app.AppCompatActivity;

import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "MusicServiceTest";
    Button start, stop;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        start=(Button)findViewById(R.id.start);
        stop=(Button)findViewById(R.id.stop);

        start.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Log.d(TAG, "onClick() start ");
                startService(new Intent(getApplicationContext(),MusicService.class));
            }
        });

        stop.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Log.d(TAG, "onClick() stop");
                stopService(new Intent(getApplicationContext(), MusicService.class));
            }
        });
    }

}

MusicService.java

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

public class MusicService extends Service {
    private static final String TAG = "MusicService";
    MediaPlayer player;
    public IBinder onBind(Intent intent) {
        return null;
    }
    public void onCreate() {
        Log.d(TAG, "onCreate()");
        player = MediaPlayer.create(this, R.raw.old_pop);
        player.setLooping(false); // Set looping
    }
    public void onDestroy() {
        Toast.makeText(this, "Music Service가 중지되었습니다.", Toast.LENGTH_LONG).show();
        Log.d(TAG, "onDestroy()");
        player.stop();
    }
    public int onStartCommand(Intent intent, int flags, int startId) {
        Toast.makeText(this, "Music Service가 시작되었습니다.", Toast.LENGTH_LONG).show();
        Log.d(TAG, "onStart()");
        player.start();
        return super.onStartCommand(intent, flags, startId);
    }
}