Fixed notification implementation.

app/build.gradle

...n/java/com/futo/platformplayer/downloads/VideoDownload.kt

...tformplayer/fragment/mainactivity/main/VideoDetailView.kt

.../main/java/com/futo/platformplayer/helpers/VideoHelper.kt

.../com/futo/platformplayer/services/MediaPlaybackService.kt

...c/main/java/com/futo/platformplayer/states/StatePlayer.kt

.../main/java/com/futo/platformplayer/video/PlayerManager.kt

...in/java/com/futo/platformplayer/views/casting/CastView.kt

app/src/main/res/layout/fragview_video_detail.xml

app/src/main/res/layout/thumbnail_player_ui.xml

app/src/main/res/layout/thumbnail_video_view.xml

app/src/main/res/layout/video_player_ui.xml

app/src/main/res/layout/video_player_ui_bar.xml

app/src/main/res/layout/video_player_ui_fullscreen.xml

app/src/main/res/layout/video_view.xml

app/src/main/res/layout/view_cast.xml

app/src/main/res/values/strings.xml