Is cancelable function exists?

[CrystalRanita]

Like React-Native Alert's cancelable parameter, if I set { cancelable: false } then when I press screen outside of dialogbox, the dialogbox cannot be dismissed.

[deavial]

Currently no. There is a property isOverlay which defaults to true. If you set this to false it will not render the background overlay.

I don't believe this is what you are looking for. I think you are wanting the overlay drawn, but have it not respond to clicks. I will add this in an upcoming release.