Match hashtag with emoji iOS 16

[namdg1992]

I have input hashtag emoji like image 1 and it displays like image 2.
How I can resolve it.

[evermeer]

Emoji's are just special text characters and should display correctly when using a font that is able to display emoji's.

If emojis aren’t displaying as expected in your iOS AttributedTextView, there are a few things you can check and try:
Font Support:
Emojis are represented by Unicode characters, and their display depends on the font used. Some fonts may not include all emoji characters.
Ensure that the font you’re using in your AttributedTextView supports the specific emojis you want to display. Not all fonts have comprehensive emoji coverage.
If you encounter issues with specific emojis, consider using an image-based approach instead.
Plane 1 Characters:
Some emojis, including the FACE SAVOURING DELICIOUS FOOD (🤤) emoji, fall into the Unicode Plane 1 category. These characters consist of two 16-bit code units in their UTF-16 encoded form (e.g., 0xD83D 0xDE0B for 🤤).
Plane 1 characters can cause problems because not all programs and fonts handle them correctly. Few fonts contain these characters.
To avoid encoding issues, use the character reference format (e.g., \uD83D\uDE08) in HTML. However, this won’t address font compatibility.
Image-Based Solution:
Consider using images for emojis instead of relying solely on text rendering.
Create an image sprite containing the emoji graphics and adjust the CSS based on the Unicode of the emoji.
Using images simplifies the process and ensures consistent rendering across devices and fonts.
iOS Predictive Text and Emoji Issues:
Sometimes, predictive text or emoji features can cause unexpected behavior.
To troubleshoot, go to Settings > General > Keyboards on your iOS device.
Scroll down to find the Predictive feature and toggle it off. Wait a few seconds, then switch it back on1.
Additionally, ensure that both you and your sister are running the latest iOS update (iOS 10.1.1 or later).
Remember that while emojis add fun and expressiveness to text, ensuring consistent display across platforms can be challenging. Using images or considering font compatibility can help address these issues. 🌟📱🙂

On iOS, the Apple Color Emoji font is the primary font used for displaying emojis across various Apple devices, including iPhone, iPad, Mac, Apple Watch, and Apple TV12. Let’s delve into the details:
Apple Color Emoji Font (Default):
Supports emojis: This font is specifically designed to display emojis with high detail and sharpness. It can handle various combinations of skin tones, genders, and other variations1.
File size: The font includes highly detailed 160px images, resulting in a file size of over 200MB1. It’s significantly larger than most other fonts.
Flexibility: It can combine multiple bitmap images in real time, allowing for more emoji combinations1.
Third-Party Fonts:
While third-party fonts can be installed on iOS, they may not always handle emojis as effectively as the default Apple font.
Some third-party fonts might not render emojis correctly or lack the necessary support for all variations (skin tones, gender combinations, etc.).
System Fonts:
System fonts (such as Helvetica, Arial, or San Francisco) are primarily designed for regular text and do not prioritize emoji rendering.
They may display emojis, but the quality and consistency might vary.
Custom Fonts:
Custom fonts chosen by users from the App Store or other sources may or may not support emojis.
It depends on the specific font and its design.
Predictive Text and Emoji Input:
Predictive text features (like QuickType) rely on the default emoji font.
If predictive text isn’t working as expected, you can try toggling it off and on in the keyboard settings3.
Remember that while third-party and system fonts can display emojis, they might not provide the same level of detail and flexibility as the Apple Color Emoji font. For the best emoji experience, stick with the default font! 😊🍎📱

[namdg1992]

It works perfectly on iOS 15 and below, but from iOS 16 there is this error.
Looks like Apple has tweaked the way UITextview works. :(

[evermeer]

The issue you’re encountering with emoji rendering in a UITextView on iOS 16 might be related to changes in the underlying system or how certain properties are handled. Let’s explore some potential solutions:
Background Color Issue:
If the emoji icons have a white background when using the emoji keyboard, it could be due to the global appearance settings. For example, if you’ve set UICollectionViewCell.appearance().backgroundColor = .white, this might affect the emoji cells as well.
To address this, consider adjusting the appearance settings specifically for your custom UICollectionViewCell class. For instance, use MyCollectionViewCell.appearance().backgroundColor = .white instead1.
TextKit 2 Update:
In iOS 16, UITextView was updated to support TextKit 2. However, if you access the layoutManager property, it falls back to TextKit 1 for compatibility reasons2.
Ensure that your code doesn’t directly manipulate the layoutManager in a way that might conflict with the new TextKit version.
Emoji Shortnames:
If you’re trying to render emoji using shortnames (like 💪), note that these shortnames are not officially assigned by the Unicode Consortium. There is no built-in implementation in the iOS SDK to handle this format3.
You might need to use existing libraries or implement custom logic to convert shortnames to actual emoji characters.
Check for Known Issues:
Sometimes, specific versions of iOS or frameworks introduce unexpected behavior. Check for any known issues related to UITextView and emoji rendering in iOS 16.
For example, in the context of .NET MAUI, there’s an issue related to Shell.TitleView not rendering on iOS 164.
Remember to test your app thoroughly on both iOS 15 and iOS 16 to identify any other potential compatibility issues. If you encounter specific error messages or warnings, those can provide additional clues for troubleshooting. 🚀

[namdg1992]

Maybe on iOS 16, this library has identified it as a string starting with the character # before rendering the emoji.