React-Native-svg supports SVG pattern, however, I am not sure how to apply it... When I try the minimal example from the documentation, I get a blanc screen, white screen.
<View
style={{paddingTop: 20,
height: '100%',
flex: 1,
backgroundColor: 'white'}}>
<Svg width="100%" height="100%" viewBox="0 0 800 400">
<Defs>
<Pattern
id="TrianglePattern"
patternUnits="userSpaceOnUse"
x="0"
y="0"
width="100"
height="100"
viewBox="0 0 10 10">
<Path d="M 0 0 L 7 0 L 3.5 7 z" fill="red" stroke="blue" />
</Pattern>
</Defs>
</Svg>
</View>
Why is that?
As @Robert Longson pointed out in a comment below the Q. You need a shape (like a rect or ellipse) with the id given in the pattern.
<Svg width="100%" height="100%" viewBox="0 0 800 400">
<Defs>
<Pattern
id="TrianglePattern"
patternUnits="userSpaceOnUse"
x="0"
y="0"
width="100"
height="100"
viewBox="0 0 10 10"
>
<Path d="M 0 0 L 7 0 L 3.5 7 z" fill="red" stroke="blue" />
</Pattern>
</Defs>
<Rect fill="none" stroke="blue" x="1" y="1" width="798" height="398" />
<Ellipse
fill="url(#TrianglePattern)" // make sure this is the id given in the pattern
stroke="black"
strokeWidth="5"
cx="400"
cy="200"
rx="350"
ry="150"
/>
</Svg>