Preparation to music streaming

app/src/main/java/com/cappielloantonio/play/service/MusicService.java

@@ -0,0 +1,97 @@
+package com.cappielloantonio.play.service;
+
+import android.app.Notification;
+import android.app.Service;
+import android.content.Intent;
+import android.media.AudioManager;
+import android.net.Uri;
+import android.os.IBinder;
+
+import androidx.annotation.Nullable;
+import androidx.core.app.NotificationCompat;
+
+import com.cappielloantonio.play.R;
+import com.google.android.exoplayer2.ExoPlayerFactory;
+import com.google.android.exoplayer2.SimpleExoPlayer;
+import com.google.android.exoplayer2.source.MediaSource;
+import com.google.android.exoplayer2.source.ProgressiveMediaSource;
+import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory;
+import com.google.android.exoplayer2.util.Util;
+
+public class MusicService extends Service implements AudioManager.OnAudioFocusChangeListener {
+    private AudioManager audioManager;
+    private MediaSource mediaSource;
+    private SimpleExoPlayer player;
+
+    @Override
+    public void onCreate() {
+        audioManager = (AudioManager) getApplicationContext().getSystemService(AUDIO_SERVICE);
+        super.onCreate();
+    }
+
+    @Override
+    public int onStartCommand(Intent intent, int flags, int startId) {
+        String input = intent.getStringExtra("playStop");
+        if (input != null && input.equals("play")) {
+            if (requestFocus()) {
+                initPlayer();
+                play();
+            }
+        } else {
+            stop();
+        }
+        startForeground(1, getNotification());
+        return START_NOT_STICKY;
+    }
+
+    @Override
+    public void onDestroy() {
+        stop();
+        super.onDestroy();
+    }
+
+    @Nullable
+    @Override
+    public IBinder onBind(Intent intent) {
+        return null;
+    }
+
+    private Notification getNotification() {
+        NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
+                .setContentText("Running ...")
+                .setContentTitle("Play")
+                .setOngoing(true)
+                .setSmallIcon(R.drawable.exo_controls_shuffle_on)
+                .setChannelId("PlayApp");
+        return builder.build();
+    }
+
+    @Override
+    public void onAudioFocusChange(int focusChange) {
+        if (focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT || focusChange == AudioManager.AUDIOFOCUS_LOSS) {
+            stop();
+            System.exit(0);
+        }
+    }
+
+    private boolean requestFocus() {
+        return (audioManager.requestAudioFocus(this, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN) == AudioManager.AUDIOFOCUS_REQUEST_GRANTED);
+    }
+
+    private void play() {
+        player.setForegroundMode(true);
+        player.prepare(mediaSource);
+        player.setPlayWhenReady(true);
+    }
+
+    private void stop() {
+        player.setPlayWhenReady(false);
+        player.stop();
+    }
+
+    private void initPlayer() {
+        player = ExoPlayerFactory.newSimpleInstance(getApplicationContext());
+        DefaultDataSourceFactory defaultDataSourceFactory = new DefaultDataSourceFactory(this, Util.getUserAgent(getApplicationContext(), "exoPlayerSample"));
+        mediaSource = new ProgressiveMediaSource.Factory(defaultDataSourceFactory).createMediaSource(Uri.parse("http://192.168.1.81:8096/Audio/5656e9fd11e38ba95ba4871bc061991a/universal?UserId=34addd030b4545e5ac4300dc322c9f73&DeviceId=e40853e4e7ab76f1&MaxStreamingBitrate=10000000&Container=flac|flac,mp3|mp3,opus|opus,m4a|aac,ogg|vorbis,ogg|opus,mka|opus&TranscodingContainer=ts&TranscodingProtocol=hls&AudioCodec=aac&api_key=7e6626ca220d4b01961022e148868d41"));
+    }
+}