software-mansion/react-native-svg

iOS: onPress is not working on the SVG Path

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#1256 opened on Jan 20, 2020

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buggood first issuehelp wantedstale

Description

Bug

I've created the following sample.

arc-bug

This is an arc which is rendered as per my expectations. When I press anywhere on the arc, on Android, onPress is always called properly but on iOS, sometimes onPress is called but sometimes it doesn't. Some part of the arc is not clickable on iOS.

Also, there isn't any positioning element(absolute/relative positioned) overlapping the arc.

Environment info

react-native: 0.61.5 react-native-svg: 9.13.3

Reproducible sample code

I'm using Path to show an elliptical arc as follows.

<Svg
   height={deviceHeight - 200}
   width={deviceWidth}
>
    <Path
       ref={ref => this.pathRef = ref}
       fill="none"
       stroke='rgba(214,51,51,.2)'
       strokeWidth={35}
       onPress={() => console.log('path on pressed called!')}
       d="M 392.72727272727275 124.90909090909088 A 360 450 0 0 0 42.72727272727275 574.9090909090909"
    />
</Svg>

Contributor guide

Tech stack
javascriptreact
Domain
mobile
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
React NativeiOS developmentReact Native SVG internals
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
45
Research direction
Start by examining the onPress implementation in the iOS native module for react native svg. Compare the touch handling code in the SVGPath element between iOS and Android. Look at files like 'RNSVGSvgView.m' and 'RNSVGPath.m' in the repository. Review the comments in issue #1256 for any hints about the problem and note that no linked PR exists.