[C+ Checklist Needs Completion] [$250] IOS - Avatar doesn't get back to its original center position after zooming in and out

[lanitochka17]

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Version Number: 9.0.70-2
Reproducible in staging?: Y
Reproducible in production?: Y
If this was caught on HybridApp, is this reproducible on New Expensify Standalone?: Y
If this was caught during regression testing, add the test name, ID and link from TestRail: https://expensify.testrail.io/index.php?/tests/view/5291133
Email or phone of affected tester (no customers): nathanmulugetatesting+2272@gmail.com
Issue reported by: Applause - Internal Team

Action Performed:

1. Open hybrid app
2. Upload a custom avatar for your profile
3. Open your self DM
4. Open the avatar to show in full screen
5. Pinch out to zoom and without releasing our finger pinch in to zoom out and position your fingers to the corner while zooming out and release your fingers

Expected Result:

The position of the avatar gets back to its original center position

Actual Result:

The avatar stays at the position it was released on and doesn't get back to the center

Workaround:

Unknown

Platforms:

Which of our officially supported platforms is this issue occurring on?

• Android: Standalone
• Android: HybridApp
• Android: mWeb Chrome
• iOS: Standalone
• iOS: HybridApp
• iOS: mWeb Safari
• MacOS: Chrome / Safari
• MacOS: Desktop

Screenshots/Videos

Add any screenshot/video evidence

Bug6683084_1733231204767.ScreenRecording_12-03-2024_15-58-36_1.1.mp4

View all open jobs on GitHub

Upwork Automation - Do Not Edit

• Upwork Job URL: https://www.upwork.com/jobs/~021863989062279850488
• Upwork Job ID: 1863989062279850488
• Last Price Increase: 2025-02-03
• Automatic offers:
• dominictb | Contributor | 106011607

[melvin-bot]

Triggered auto assignment to @greg-schroeder (Bug), see https://stackoverflow.com/c/expensify/questions/14418 for more details. Please add this bug to a GH project, as outlined in the SO.

[melvin-bot]

Job added to Upwork: https://www.upwork.com/jobs/~021863989062279850488

[melvin-bot]

Triggered auto assignment to Contributor-plus team member for initial proposal review - @abdulrahuman5196 (External)

[melvin-bot]

Upwork job price has been updated to $125

[ahmedkhan28]

Hi! I came across your job posting on Upwork regarding the avatar centering issue in your iOS app. After analyzing the problem where the avatar doesn't return to center after zoom gestures, I believe this can be fixed effectively through iterative solutions. I am a full time full stack iOS developer, designer and game developer at MagicHabits. This can be fixed in max 1-2 days.

Based on my experience with iOS gesture handling and UI animations, I've identified 5 potential approaches that could solve this:

Spring Animation Reset

swiftCopyUIView.animate(withSpringDamping: 0.8) {
avatarImageView.center = view.center
}

Velocity-Based Repositioning

swiftCopylet velocity = gesture.velocity(in: view)
let newCenter = calculatePosition(from: velocity)
animateToPosition(newCenter)

Smart Edge Detection

swiftCopyif !safeBounds.contains(avatar.frame) {
returnToCenter(animated: true)
}

Progressive Center Force

swiftCopylet centerForce = 1 - currentScale
let newCenter = interpolate(current: position,
target: center,
force: centerForce)

Physics-Based Boundaries

swiftCopylet behavior = UIAttachmentBehavior(item: avatarImageView)
animator.addBehavior(behavior)
Most natural but complex implementation
Recommended Approach:

I suggest implementing Solution #1 (Spring Animation Reset) first, then enhancing it with elements of Solution #4 (Progressive Center Force). This combination would:

Provide immediate improvement in UX
Feel natural and iOS-native
Be quick to implement and test
Allow for easy tuning of behavior

Let me know if you like it so I can submit a proposal on upwork!

[melvin-bot]

📣 @ahmedkhan28! 📣
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[ahmedkhan28]

Contributor details
Your Expensify account email: ahmedkhan850@gmail.com
Upwork Profile Link: www.upwork.com/agencies/1838604427293852717