Does React Native styles support gradients?

Not at the moment. You should use the library you linked; they recently added Android support and it is by one of the main contributors of react-native.

Just export your gradient as SVG and use it using react-native-svg and when after you import your component set width and height and preserveAspectRatio="xMinYMin slice"to scale an SVG gradient at your needs.

First, run npm install expo-linear-gradient --save

You don't need to use an animated tag, but this is what I was using in my code.

inside colors={[ put your gradient colors ]}

then you can use something like this:

 import { LinearGradient } from "expo-linear-gradient";
 import { Animated } from "react-native";

 <AnimatedLinearGradient
    colors={["rgba(255,255,255, 0)", "rgba(255,255,255, 1)"]}
    style={{ your styles go here }}/>

const AnimatedLinearGradient = Animated.createAnimatedComponent(LinearGradient);