I have used webview for display vimeo video. Fullscreen is working on ios but not in android.In webview i'll set HTML source to display video,
code :
[<iframe id="vimeo_player" src="https://player.vimeo.com/video/367704812" width="100%" height="300" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>]```