iOS CallKit 调用识别

Question

我已成功安装扩展CXCallDirectoryProvider，以识别预先添加的电话条目。我在网上找到的文档相当不够。尽管如此，我还是成功地完成了必要的电话条目的初始导入。通过重写 func beginRequest(with context: CXCallDirectoryExtensionContext)。更具体:

override func beginRequest(with context: CXCallDirectoryExtensionContext) {
    context.delegate = self

    // Check whether this is an "incremental" data request. If so, only provide the set of phone number blocking
    // and identification entries which have been added or removed since the last time this extension's data was loaded.
    // But the extension must still be prepared to provide the full set of data at any time, so add all blocking
    // and identification phone numbers if the request is not incremental.

    if #available(iOS 11, *) {
        if context.isIncremental {
            addOrRemoveIncrementalBlockingPhoneNumbers(to: context)
            addOrRemoveIncrementalIdentificationPhoneNumbers(to: context)
        } else {
            addAllBlockingPhoneNumbers(to: context)
            addAllIdentificationPhoneNumbers(to: context)
        }
    } else {
        addAllBlockingPhoneNumbers(to: context)
        addAllIdentificationPhoneNumbers(to: context)
    }

    context.completeRequest()
}

上面最初安装电话记录的调用函数是addAllIdentificationPhoneNumbers并且工作起来就像一个魅力。

private func addAllIdentificationPhoneNumbers(to context: CXCallDirectoryExtensionContext) {
    // Retrieve phone numbers to identify and their identification labels from data store. For optimal performance and memory usage when there are many phone numbers,
    // consider only loading a subset of numbers at a given time and using autorelease pool(s) to release objects allocated during each batch of numbers which are loaded.
    //
    // Numbers must be provided in numerically ascending order.


    var allNumbers = [(Number: String, Fullname: String)]()

    // load allNumbers from local db 
    // ...
    // ...
    // ...

    var test = allNumbers.map { s -> (Number: CXCallDirectoryPhoneNumber, Fullname:String) in
        (CXCallDirectoryPhoneNumber(s.Number)!, s.Fullname)
    }

    // inc order 
    test.sort(by: { $0.Number < $1.Number })

    // do the mapping to satisfy CallKit
    let allPhoneNumbers = test.map { $0.Number }

    let labels = test.map { $0.Fullname }

    for (phoneNumber, label) in zip(allPhoneNumbers, labels) {
        context.addIdentificationEntry(withNextSequentialPhoneNumber: phoneNumber, label: label)
    }

}

当用户到达“设置”->“电话”->“调用阻止和识别”并启用应用程序名称旁边的句柄时，将运行上述代码。

现在问题部分...

此代码如何阻止

if context.isIncremental {
            addOrRemoveIncrementalBlockingPhoneNumbers(to: context)
            addOrRemoveIncrementalIdentificationPhoneNumbers(to: context)
        }

为了更新经常更改的记录而触发？

是否有任何指南/模式或几乎任何东西可以为我指明正确的方向，即如何维护这些条目并在它们更改时保持它们最新，或者添加新的，甚至删除过时的条目。我在网上找不到任何有关初始 addAllIdentificationPhoneNumbers 增量的信息。

Answer 1

只有在您的扩展程序运行一次并提供其初始的完整基准数据集后，才会请求增量数据集。

例如，如果您的扩展程序在安装后运行一次，提供其基准数据集，然后您的应用程序调用 CXCallDirectoryManager.reloadExtension(identifier:completion:)要请求重新运行扩展，后续重新运行应该是增量的。