react-native-math-view
v3.9.5
Published
Math view for react-native
Downloads
5,786
Maintainers
Readme
react-native-math-view
WIP V3
A react native view used to easily display and handle math.
The library doesn't use WebView
.
| MathView Example | Lists Example | MathText | | --- | --- | --- | | | | |
Installation
npm install --save react-native-math-view
OR yarn add react-native-math-view
react-native
> 0.59
iOS:
Install react-native-svg
$ cd ios && pod install
Expo
Expo doesn't support native modules.
You can use this library with react-native-svg
(performance suffers a bit), see #19.
Errors during installation:
- Upgrade
typescript
- If you're getting an error regarging
compileMathjax
you can disregard it as long ascompiled mathjax successfully
was printed to the console. If you're usingyarn
it's probable no logging will show. - To be sure everything is compiled properly run the following command from the
mathjax-full
node_module
directory of your project:
npm run compile
typescript
errors can be safely disregareded.
see also #16
Getting Started
import MathView, { MathText } from 'react-native-math-view';
return (
...
<MathView
math={'x=\\frac{-b\\pm\\sqrt{b^2-4ac}}{2a}'}
/>
<MathView
math='\cos\left(x\right)=\frac{b}{c}'
/>
<MathView
math='\cos\left(x=\frac{b}{c}'
renderError={({ error }) => <Text style={[{ fontWeight: 'bold' }]}>{error}</Text>}
/>
<MathText
value={`This text includes math notations and should be wrapped correctly for \\( \\alpha \\) and $\\beta$ within the view. \nThe following formula shouldn't be inline:$$x_{1,2} = {-b \\pm \\sqrt{b^2-4ac} \\over 2a}$$However the following formula should be inline with the text: \\( a^2 + b^2 = c^2 \\)`}
direction="ltr"
CellRendererComponent={<TouchableOpacity />}
/>
...
);
TroubleShooting
- Make sure to properly escape all
LaTeX
strings (Syntax sensitive):
This occurs because when passing math={value}
, value
gets evaluated as opposed to math='LaTeX'
.
It is cosidered best practice to avoid using math='LaTeX'
.
<MathView
- math='x=\\frac{-b\\pm\\sqrt{b^2-4ac}}{2a}'
+ math='x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}'
/>
// OR
<MathView
- math={'x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}'}
+ math={'x=\\frac{-b\\pm\\sqrt{b^2-4ac}}{2a}'}
/>
- Try your
LaTeX
in theMathJax
sandbox. You can runsetMode('SVG')
from dev console in order to render svg.
Running example app
From the project's directory run:
yarn --production=false
cd MathExample
yarn --production=false
npm run android
MathJax Supported LaTeX Commands
Implementation:
[ ] iOS native MathView - POC successful, need to implement native measuring. For now fallbacking to
react-native-svg
[x] Android MathView - native since V2, based on Android SVGImageView. Need to implement
editable
state.
Looking for Web support?
Check out react-math-view!
FollowUp
Web Math Editors -> MathLive looks very promising!
KaTeX - Math keypad that works with <WebView>
. See this
React with LaTeX - using server side rendering to speed things up.