I have a viewPager with CubeTransformer, which is transforming every fragment. And inside every fragment is Image or Video view (with Exoplayer). And when you are trying to change a framgnet with transformation, exoplayer losses preview (I've got a black screen), even it's not playing. But after you changing condition to normal, preview is coming back
Ohterwise, if you will remove pageTransformer, review is not dissapears. How to keep preview always on screen?
CubeTransformer
class CubeTransformer : ViewPager.PageTransformer {
override fun transformPage(view: View, position: Float) {
if (view.visibility != View.VISIBLE) return
view.apply {
cameraDistance = (view.width * distanceMultiplier).toFloat()
pivotX = if (position < 0f) view.width.toFloat() else 0f
pivotY = view.height * 0.5f
rotationY = 90f * position
if (position < -1 || position > 1) {
alpha = 0f // item not visible
} else {
alpha = 1f
}
}
}
private companion object {
private const val distanceMultiplier: Int = 20
}
}
VideoView
class VideoView(context: Context) : ConstraintLayout(context, null) {
private val player = ExoPlayerFactory.newSimpleInstance(context, DefaultTrackSelector(), DefaultLoadControl())
private val dataSourceFactory = DefaultDataSourceFactory(context, "android")
private lateinit var model: Model
init {
inflate(context, R.layout.story_item_video, this)
video_view.player = player
video_view.keepScreenOn = true
video_view.setBackgroundColor(Color.TRANSPARENT)
video_view.setShutterBackgroundColor(Color.TRANSPARENT)
}
fun setData(model: Model?) {
if (model== null) return
this.model = model
val mediaSource = HlsMediaSource
.Factory(dataSourceFactory)
.setExtractorFactory(DefaultHlsExtractorFactory())
.createMediaSource(Uri.parse(model.streamLink))
player.playWhenReady = true
player.prepare(mediaSource)
player.addListener(object: Player.EventListener {
override fun onPlaybackParametersChanged(playbackParameters: PlaybackParameters?) {
}
override fun onSeekProcessed() {}
override fun onTracksChanged(trackGroups: TrackGroupArray?, trackSelections: TrackSelectionArray?) {
}
override fun onPlayerError(error: ExoPlaybackException?) {
}
override fun onLoadingChanged(isLoading: Boolean) {
}
override fun onPositionDiscontinuity(reason: Int) {
}
override fun onRepeatModeChanged(repeatMode: Int) {
}
override fun onShuffleModeEnabledChanged(shuffleModeEnabled: Boolean) {
}
override fun onTimelineChanged(timeline: Timeline?, manifest: Any?, reason: Int) {
}
override fun onPlayerStateChanged(playWhenReady: Boolean, playbackState: Int) {
}
})
}
}
