如何定制GetStream Chat SwiftUI视图？UIKit与SwiftUI混合场景下ChatChannelInfoView修改求助

Got it, let's tackle this problem together! Since you can't modify the ChatChannelInfoView directly from the StreamChatSwiftUI library, here are a few practical approaches to customize it and hide the sections you don't want:

1. Leverage Stream's Built-in Customization APIs (Recommended) #

Stream's SwiftUI SDK is designed with customization in mind—start by checking if the ChatChannelInfoView initializer or Stream's configuration offers parameters to toggle visibility of specific sections. Many of their pre-built views include flags to show/hide components like member lists, channel descriptions, or headers.

For example, if the initializer supports such parameters, you can adjust it like this:

@objc func didSelectAvatarView() { 
    guard let channel = self.channelController.channel else { return } 
    // Use hypothetical visibility parameters (check Stream's docs for actual names)
    let channelInfoView = ChatChannelInfoView(
        channel: channel,
        showMembersSection: false,
        showChannelDescription: false
    )
    let vc = UIHostingController(rootView: channelInfoView) 
    navigationController?.pushViewController(vc, animated: true) 
}

If direct initializer parameters don't exist, check the ChatClient configuration or the view's associated view model—there might be global or per-view settings to disable certain elements.

2. Wrap the View and Hide Elements with SwiftUI Layout Tools #

If built-in customization isn't an option, wrap the ChatChannelInfoView in a parent SwiftUI view and use layout modifiers to obscure or hide unwanted sections. You can use a ZStack to overlay a colored view matching your background over the parts you want to hide, or use .hidden() if you can target specific subviews (though SwiftUI's opaque views make this tricky).

Here's an example of overlaying to hide a section:

struct CustomChannelInfoWrapper: View {
    let channel: ChatChannel
    
    var body: some View {
        ZStack {
            ChatChannelInfoView(channel: channel)
            
            // Adjust frame and position to cover the section you want to hide
            Color(UIColor.systemBackground)
                .frame(height: 90)
                .position(x: UIScreen.main.bounds.width / 2, y: 320)
        }
    }
}

// Update your UIKit code to use the wrapper
@objc func didSelectAvatarView() { 
    guard let channel = self.channelController.channel else { return } 
    let customView = CustomChannelInfoWrapper(channel: channel)
    let vc = UIHostingController(rootView: customView) 
    navigationController?.pushViewController(vc, animated: true) 
}

3. Create a Custom Clone of the View #

If workarounds aren't sufficient, you can create your own version of ChatChannelInfoView by copying the library's source code (just double-check Stream's license to ensure this is allowed). This lets you fully remove the sections you don't want.

Steps to implement this:

1. Use Xcode's "Jump to Definition" to view the source code of ChatChannelInfoView.
2. Copy the code into your project and rename it (e.g., CustomChatChannelInfoView).
3. Delete or comment out the UI elements you want to hide.
4. Use your custom view in the hosting controller:

@objc func didSelectAvatarView() { 
    guard let channel = self.channelController.channel else { return } 
    let customChannelInfoView = CustomChatChannelInfoView(channel: channel)
    let vc = UIHostingController(rootView: customChannelInfoView) 
    navigationController?.pushViewController(vc, animated: true) 
}

4. Use Introspection to Modify Underlying UIKit Views #

Since you're hosting the SwiftUI view in a UIHostingController, you can use the Introspect library (or Apple's native view introspection tools) to traverse the underlying UIKit view hierarchy and hide specific elements.

Example of this approach:

struct CustomChannelInfoView: View {
    let channel: ChatChannel
    
    var body: some View {
        ChatChannelInfoView(channel: channel)
            .introspectViewController { hostingVC in
                traverseAndHideSubviews(hostingVC.view)
            }
    }
    
    private func traverseAndHideSubviews(_ view: UIView) {
        for subview in view.subviews {
            // Identify the view to hide (adjust condition based on your needs)
            if let label = subview as? UILabel, label.text == "Members" {
                subview.isHidden = true
            }
            // Recursively check child subviews
            traverseAndHideSubviews(subview)
        }
    }
}

内容的提问来源于stack exchange，提问作者tyler