Android examples how to play audio files

Android code examples to play audio asset or resource files.

Simple applications with list of audio files. The audio files are stored in botht the res/raw directory and the asset directory. Best to stored audio files in mp3 encoding audio format which is supported by both old and new OS levels.

Android media formats

Image shows workspace layout with audio files (mp3) stored in both assets and res/raw directory.

Select and audio file then press the various play otions:

Notification - Play using status notification service

Raw - Play audio file stored in res/raw directory

Asset - Play audio file stored in asset directory

Play using Notification service

Example of how to play Audio file in resource raw directory using the Status bar Notifcation service:

private void notifySound(String assetName) {
    NotificationManager notificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);

    // Uri soundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    String RESOURCE_PATH = ContentResolver.SCHEME_ANDROID_RESOURCE + "://";

    String path;
    if (false) {
        path = RESOURCE_PATH + getPackageName() + "/raw/" + assetName;
    } else {
        int resID = getResources().getIdentifier(assetName, "raw", getPackageName());
        path = RESOURCE_PATH + getPackageName() + File.separator + resID;
    }
    Uri soundUri = Uri.parse(path);

    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(getApplicationContext())
            .setContentTitle("Title")
            .setContentText("Message")
            .setSmallIcon(R.mipmap.ic_launcher)
            .setSound(soundUri); //This sets the sound to play

    notificationManager.notify(10, mBuilder.build());
}

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Play audio file from resource raw directory

private void playSound2(String assetName) {
    try {
        // Syntax  :  android.resource://[package]/[res type]/[res name]
        // Example : Uri.parse("android.resource://com.my.package/raw/sound1");
        //
        // Syntax  : android.resource://[package]/[resource_id]
        // Example : Uri.parse("android.resource://com.my.package/" + R.raw.sound1);

        String RESOURCE_PATH = ContentResolver.SCHEME_ANDROID_RESOURCE + "://";

        String path;
        if (false) {
             path = RESOURCE_PATH + getPackageName() + "/raw/" + assetName;
        } else {
            int resID = getResources().getIdentifier(assetName, "raw", getPackageName());
            path = RESOURCE_PATH + getPackageName() + File.separator + resID;
        }
        Uri soundUri = Uri.parse(path);
        mSoundName.setText(path);

        mMediaPlayer = new MediaPlayer();
        if (true) {
            // Internal asset
            mMediaPlayer.setDataSource(getApplicationContext(), soundUri);
            mMediaPlayer.prepare();
        } else if (false) {
            // Load external audio files url:
            //  "http://www.bogotobogo.com/Audio/sample.mp3";
            mMediaPlayer.setDataSource(path);
            mMediaPlayer.prepare();
        } else {
            // Internal resource asset
            ContentResolver resolver = getContentResolver();
            AssetFileDescriptor afd = resolver.openAssetFileDescriptor(soundUri, "r");
            mMediaPlayer.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength());
            afd.close();
        }

        mMediaPlayer.start();
    } catch (Exception ex) {
        Toast.makeText(this, ex.getMessage(), Toast.LENGTH_LONG).show();
    }
}

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Play audio file from asset directory

private void playSound3(String assetName) {
    try {
        AssetFileDescriptor afd =  getAssets().openFd("sounds/" + assetName + ".mp3");
        mMediaPlayer = new MediaPlayer();
        mMediaPlayer.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength());
        afd.close();
        mMediaPlayer.prepare();
        mMediaPlayer.start();
    } catch (Exception ex) {
        Toast.makeText(this, ex.getMessage(), Toast.LENGTH_LONG).show();
    }
}

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