Error: Exception in HostFunction: Malformed calls from JS: field sizes are different. In an Animated View
As I understand this error can occur in a number of different use cases. Here is what happened in this use case
- An Animated View is being controlled by a
PanResponderand this is reset at certain intervals to create an infinite scroll effect. - Compiles and runs perfectly and functions as intended.
- Small gestures (almost like a tap) ie. pixel movements of about +- 4dx/ 4 dy the code crashes with the error in the title.
The error is thrown in the Child View of the PanResponsder with the mismatch resulting from the translate: [{transform}] I believe.
Why does the code function fine except for smaller gestures? What casuses the error?
Solution
I ended up resolving the issue.
In this case, it was specific to a PanResponder, but I believe this can occur in other situations as well, the error tracking should be similar. A moveY variable on the PanResponder went beyond a threshold set elsewhere. This resulted in translateY being set to NaN which threw the above error. This results in a mismatch in props.
- If others experience this issue my advice would be to identify the specific component experiencing the mismatch. (In this case
PanResponder) - Isolate the props (set defaults/ dummy values) and ensure that each prop is resolved correctly (especially in
Animatedtransform:translatex/translateY) - Trace the prop responsible and adjust the logic specific to that prop to avoid NaNs and undefined being passed.
- How to detect user inactivity with JavaScript?
- How to convert utf-8 string to urlencoded win1251 in javascript
- SubtleCrypto importKey from PEM
- Is starting express like this "const app = require('express')()" considered bad practice?
- Getting extra space between lines of text (not due to line height)
- MUI X Datagrid Resets on Row Selection
- How to allow directory uploads in React with <input type="file">
- Open two months date picker ( month range picker)
- OnClick works only once
- How do I programmatically select a node in jsTree and open all parents
- javascript redirect not working anyway
- factorial of a number
- Variable simultaneously true and false
- How to make these fixed columns' width on a Bootstrap 4.0 table-responsive?
- I am trying to create a nested route for a child component
- Creating a Blob from a base64 string in JavaScript
- Why does << 32 not result in 0 in javascript?
- Why do I have set my canvas width to window innerWidth in JS and canvas width 100% in css?
- How to validate an array of objects in a request body using JOI
- if statement when so much is loaded, it begins a new row
- Filtering array of objects with arrays based on nested value
- Focusing input box on keydown causes key to be typed into input box
- Passing Event from Button: event.target undefined; json strigify gives {"isTrusted":true}?
- Width of screen is not calculating correctly when using scrollbar-gutter stable
- Evt.which and Evt.keyCode deprecated and JavaScript Errors
- How do I redirect to another webpage?
- HTML5 canvas Mouseover event
- JavaScript's time zones as a way to locate a user's country
- Help me fix my JavaScript quiz
- File upload preview disappears when switching tabs (State persists)