无法从 Cocoapods 渲染 SwiftUI 预览

Question

我SwiftUI在一个公共库中有一个结构体，我寄给自己。

public struct NTextField: View {
    public var body: some View {
        Text("Hello, World!")
    }

    public init() {

    }
}

struct NTextField_Previews: PreviewProvider {
    static var previews: some View {
        NTextField()
    }
}

我点击文件，WYSIWYG 预览无法加载

单击“诊断”时，我看到如下内容：

Error Domain=com.apple.dt.UITestingAgent Code=-1 "failed to load library at path "/Users/<my_app_name>/Library/Developer/Xcode/DerivedData/<my_app_name>/Build/Intermediates.noindex/Previews/<my_app_name>/Products/Debug-iphonesimulator/<my_custom_pod>/<my_custom_pod>.framework/<my_custom_pod>": Library not loaded: 

有任何想法吗？我删除了派生数据，清理和构建。

也在cocoapods git hub issue tracker 上找到了这个。

Answer 1

您可以尝试将其添加到您的 Podfile 中（按照JamesHurst、cltnschlosser和andersio的建议）

class Pod::Target::BuildSettings::AggregateTargetSettings
    alias_method :ld_runpath_search_paths_original, :ld_runpath_search_paths

    def ld_runpath_search_paths
        return ld_runpath_search_paths_original unless configuration_name == "Debug"
        return ld_runpath_search_paths_original + framework_search_paths
    end
end

class Pod::Target::BuildSettings::PodTargetSettings
    alias_method :ld_runpath_search_paths_original, :ld_runpath_search_paths

    def ld_runpath_search_paths
        return (ld_runpath_search_paths_original || []) + framework_search_paths
    end
end