Sample app for an easy Virtual Reality integration with ExoPlayer. This is achieved playing 360 videos (spherical) and using device motion sensors to navigate within them

VRActivity.kt

class VRActivity : AppCompatActivity() {

    private var player: SimpleExoPlayer? = null

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

        (player_view.videoSurfaceView as SphericalGLSurfaceView)
            .setDefaultStereoMode(C.STEREO_MODE_TOP_BOTTOM)
    }

    override fun onStart() {
        super.onStart()
        if (Build.VERSION.SDK_INT > 23) {
            initializePlayer()
        }
    }

    override fun onResume() {
        super.onResume()
        if ((Build.VERSION.SDK_INT <= 23 || player == null)) {
            initializePlayer()
        }
    }

    override fun onPause() {
        super.onPause()
        if (Build.VERSION.SDK_INT <= 23) {
            releasePlayer()
        }
    }

    override fun onStop() {
        super.onStop()
        if (Build.VERSION.SDK_INT > 23) {
            releasePlayer()
        }
    }

    private fun buildMediaSource(uri: Uri): MediaSource {
        val dataSourceFactory = DefaultDataSourceFactory(this, "javiermarsicano-VR-app")
        // Create a media source using the supplied URI
        return ProgressiveMediaSource.Factory(dataSourceFactory)
            .createMediaSource(uri)
    }

    private fun initializePlayer() {
        player = SimpleExoPlayer.Builder(this).build()

        val uri = Uri.parse("https://storage.googleapis.com/exoplayer-test-media-1/360/congo.mp4")
        val mediaSource = buildMediaSource(uri)
        player?.prepare(mediaSource)

        player_view.player = player
        player_view.onResume()
    }

    private fun releasePlayer() {
        player_view.onPause()
        player?.release()
        player = null
    }
}