I saw onnoffitacation in the Behavior configuration of Reality Composer pro, which asked me to enter the Nofficatition name, that is to say, this requires swift in Xcode to send a message. There is a message name in the message, so I hope you can write a list for me how to use Swift in Xcode to send a message containing the message name.(There is an answer in https://developer.apple.com/forums/thread/756978, but it doesn't work.) and in the time line in Reality Composer Pro, there is a Notification action, which is used to send messages to swift. How can I ask swift to detect whether the Notification action has sent a message?(There is an answer in https://developer.apple.com/videos/play/wwdc2024/10102/, but it doesn't work.) I have asked this question before (https://developer.apple.com/forums/thread/756978). Those answers were available before, but now they are all invalid in the latest system. I hope you can help me. Thank you.

How to make a specified entity in RealityView be captured by users: This entity has physical and collision components, and the user will not change when he does not grasp the action. However, when the user makes a grab hand gesture and is very close to the entity (there can be a small deviation), an Anchor component will be enabled to bind the entity to the hand, but when the user lets go, he will fall along the y-axis of the current position (affected by the physical component). I hope you can help me. Thank you.

How to detect whether two entities collide in RealityView and execute some instructions after the collision. It is assumed that both entities have collision components, and one of them also has an anchor component (such as a binding hand).

I am honored that I successfully participated in the "Envision the future: Build great apps for visionOS"(https://developer.apple.com/events/view/ZCH7ZUY24C/dashboard) conference. However, unfortunately, I am in China, and due to the visa problem (because it usually takes at least 2 months to apply for a visa, but it only takes about 10 days from the time I received the notice to the meeting), I can't go to the United States to participate in the site. So I hope Apple can place an iPad on site and create a FaceTime link, and then I can make a call to this iPad. I also told Apple about this suggestion, but now there are only a few days left to start. They didn't reply to me. Even Apple has sent me the ticket to the Developer Center and asked me to add it to the Apple Wallet App, which means that Apple has not There is a request to deal with me. So I hope you can give me some advice or help me for those who know about this aspect. For Apple's internal engineers, if possible, I hope you can contact the person who manages this meeting. I'm very grateful for this. Thank you.

Since my question exceeds 700 words, please check it in the attachment. Thank you! Question

Given my limited knowledge of physics, I would appreciate it if individuals with a solid understanding of the subject could provide insights into this matter. I have added a physical component to a entity in Reality Composer Pro, but I am seeking guidance on how to achieve the following: Make an object float in the air (with a slight downward motion reminiscent of the moon’s surface) Enable the object to move at a slow pace Implement a strong rebound force I would be grateful if you could provide appropriate values for these parameters. Thank you for your assistance.

In iOS, to display a RealityView, you can assign a value to the content.camera property: content.camera = .virtual However, how can this be implemented in macOS and tvOS?

When I wanted to call the Reality Composer Pro scene containing Object Tracking, I tried the following code: RealityView { content in if let model = try? await Entity(named: "Scene", in: realityKitContentBundle) { content.add(model) } } Obviously, this is wrong. We need to add some configurations that can enable Object Tracking to Reality View. What do we need to add? Note:I have seen https://developer.apple.com/videos/play/wwdc2024/10101/, but I don't know much about it.

There appears to be an issue with the sales of my application. The sales table indicates a negative value of -1. Has anyone processed a refund for this transaction?

I saw onnoffitacation in the Behavior configuration of Reality Composer pro, which asked me to enter the Nofficatition name, that is to say, this requires swift in Xcode to send a message. There is a message name in the message, so I hope you can write an list for me how to use Swift in Xcode to send a message containing the message name.

The light of RealityView can only be effective on virtual objects. I hope it can be projected into the real world. What API can be implemented?

In Reality View, I want to move an entity A to the position of entity B, but I can't determine the coordinates of entity B (for example, entity B is tracking the hand). What's the solution?

In this code: https://developer.apple.com/documentation/visionos/incorporating-real-world-surroundings-in-an-immersive-experience It contains a physical collision reaction between virtual objects and the real world, which is realized by creating a grid with physical components. However, I don't understand the information in the document very well. Who can give me a solution? Thank you!

Coordinate conversion was mentioned in https://developer.apple.com/wwdc24/10153 (the effect is demonstrated at 22:00), in which the demonstration is an entity that jumps out of volume into space, but I don't understand his explanation very well. I hope you can give me a basic solution. I am very grateful for this!

This effect was mentioned in https://developer.apple.com/wwdc24/10153 (the effect is demonstrated at 28:00), in which the demonstration is you can add coordinates by looking somewhere on the ground and clicking., but I don't understand his explanation very well. I hope you can give me a basic solution. I am very grateful for this!