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我正在尝试在 iOS 上创建自己的内容拦截器。我想为不同类型的内容（跟踪、广告、成人网站等）创建单独的 json 列表。我遇到了这个https://github.com/calebhicks/ios-safari-content-blocking，它说你可以创建一个“附件”数组，而不是依赖于单一的“blockerList”json 文件。

func beginRequest(with context: NSExtensionContext) {
    var jsonFiles:Array<NSItemProvider> = Array()

    let attachment = NSItemProvider(contentsOf: Bundle.main.url(forResource: "blockerList", withExtension: "json"))!
    jsonFiles.append(attachment)

    let attachment2 = NSItemProvider(contentsOf: Bundle.main.url(forResource: "testList", withExtension: "json"))!
    jsonFiles.append(attachment2)

    let item = NSExtensionItem()
    item.attachments = jsonFiles

    context.completeRequest(returningItems: [item], completionHandler: nil)
}

大部分代码是 Content Blocker Extension 设置中的默认代码，但我添加的是 jsonFiles 数组，附件和附件 2 放置在其中。运行此代码时，仅加载两个规则集之一，而不是两者的组合他们俩。关于为什么只加载一个规则集的任何想法？

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1 回答 1

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您可以将两个 JSON 规则文件合并到一个文件中并使用该文件。 

    import UIKit
        import MobileCoreServices
        class ContentBlockerRequestHandler: NSObject, NSExtensionRequestHandling {

        func beginRequest(with context: NSExtensionContext) {

        let sharedContainerURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "you app group identifier")

                let sourceURLRules = sharedContainerURL?.appendingPathComponent("Rules1.json")
                let sourceURLRules2 = sharedContainerURL?.appendingPathComponent("Rules2.json")
                do {
                    let jsonDecoder = JSONDecoder()

                    let dataFormRules1 = try Data(contentsOf: sourceURLRules1!, options: .mappedIfSafe)// Rule is Decode able Swift class            
                   let  rulesArray1 = try? jsonDecoder.decode(Array<Rule>.self,from: dataFormRules1)

                    let dataFormRules2 = try Data(contentsOf: sourceURLRules2!, options: .mappedIfSafe)
                    let  rulesArray2 = try? jsonDecoder.decode(Array<Rule>.self,from: dataFormRules2)

                    saveCombinedRuleFile(ruleList: rulesArray1! + rulesArray2!)

                } catch {
                    //handle error condition
                }

                let sourceURLCombinedRule = sharedContainerURL?.appendingPathComponent("CombinedRule.json")
                let combinedRuleAttachment = NSItemProvider(contentsOf: sourceURLCombinedRule)
                let item = NSExtensionItem()
                item.attachments = [combinedRuleAttachment]
                context.completeRequest(returningItems: [item], completionHandler: nil)
            }

            func saveCombinedRuleFile(ruleList:[Rule]) {
                let encoder = JSONEncoder()
                if let encoded = try? encoder.encode(ruleList) {
                    let sharedContainerURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "you app group identifier")
                    if let json = String(data: encoded, encoding: .utf8) {
                        print(json)
                    }
                    if let destinationURL = sharedContainerURL?.appendingPathComponent("CombinedRule.json") {
                        do {
                            try  encoded.write(to: destinationURL)
                        } catch {
                            print ("catchtry")
                        }
                    }
                }
            }
        }
于 2018-09-18T07:30:13.800 回答