Support for Text Alignment #365

[Wmg20]

Summary

Support for feature request: #365

This PR introduces text alignment support (left, center, right) to EnrichedTextInput.

Features & Implementation:

• Core API: Added setParagraphAlignment(alignment) to the JS Ref and included alignment structures in the text change events.
• Android: Handled paragraph alignment using Android Layout.Alignment spans (ALIGN_NORMAL, ALIGN_CENTER, ALIGN_OPPOSITE). Emits active alignment state back to the JS context.
• iOS: Implemented native NSTextAlignment via NSMutableParagraphStyle and updated the active alignment state when cursor location changes.
• Example App: Included Left, Center, and Right buttons in the floating toolbar, correctly updating to reflect the cursor's current line alignment. Updated API_REFERENCE.md to document the new functionality.

Test Plan

1. Compile and run the example application.
2. Type multiple paragraphs.
3. Tap the alignment buttons in the floating toolbar and verify the text correctly aligns to Left, Center, and Right.
4. Move the cursor between differently aligned paragraphs and verify the active button in the toolbar dynamically updates.
5. Verify behavior on both platforms (iOS and Android).

Screenshots / Videos

Compatibility

OS	Implemented
iOS	✅
Android	✅

[kacperzolkiewski]

Hello @Wmg20,
Thank you for opening this PR, we really appreciate the contribution!

I wanted to let you know that we already have an iOS implementation of text alignment in #403, which is currently awaiting review. If it gets merged, we'd love to have the Android side implemented in a similar fashion so both platforms stay consistent.
A few key points from the iOS approach that would be great to align on:

1. List alignment is applied as a unit:

• when the cursor is inside a list, the alignment change is applied to all contiguous list items, not just the current paragraph.

2. List markers stay on the left:

• regardless of text alignment (right, center, etc.), bullets / numbers / checkboxes are always drawn at the left margin.

It would be great if you could take a look at #403 and adapt the Android implementation to follow the same conventions. That way we keep the behavior consistent across platforms.

Thanks again for your effort and feel free to reach out if you have any questions!

[Wmg20]

Hi @kacperzolkiewski ,

Thanks for the clarification and the detailed context.

I’ll take a look at #403 and align the Android implementation with the iOS approach so the behavior stays consistent across platforms. In particular, I’ll make sure that:

List alignment is applied to the entire contiguous list, not just the current paragraph when the cursor is inside a list.

List markers remain left-aligned, regardless of the selected text alignment (center, right, etc.).

I’ll update the Android implementation accordingly and push the changes.
Thanks again for pointing this out!

[kacperzolkiewski]

@Wmg20 I’ll close this PR since you’ve opened the Android version: #488