ios - Voip 服务 (PKPush) 委托(delegate)方法未被调用

Question

我正在尝试设置一个 PKPushRegistry，这样我就可以接收 VOIP 服务推送，但我的代表没有触发。我成功取回了设备 token ，因此我知道流程的第一部分正在运行。此外，我的服务器具有适用于这两种推送的适当证书。

class AppDelegate: UIResponder, UIApplicationDelegate, PKPushRegistryDelegate {

  func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {

            self.voipRegistration()
    }

    func voipRegistration() {
        let mainQueue = DispatchQueue.main
        let voipRegistry: PKPushRegistry = PKPushRegistry(queue: mainQueue)
        voipRegistry.delegate = self
        voipRegistry.desiredPushTypes = [PKPushType.voIP]
    }


    func pushRegistry(_ registry: PKPushRegistry, didInvalidatePushTokenFor type: PKPushType) {
        //
    }

    func pushRegistry(_ registry: PKPushRegistry, didReceiveIncomingPushWith payload: PKPushPayload, for type: PKPushType) {
        //
    }

    func pushRegistry(_ registry: PKPushRegistry, didUpdate pushCredentials: PKPushCredentials, for type: PKPushType) {
        //
    }


    func pushRegistry(_ registry: PKPushRegistry, didReceiveIncomingPushWith payload: PKPushPayload, for type: PKPushType, completion: @escaping () -> Void) {
        //
    }

Answer 1

Apple 将 VOIP 从后台模式中移除，所以我手动添加了它并且它起作用了

<key>UIBackgroundModes</key>
<array>
    <string>audio</string>
    <string>voip</string>
    <string>fetch</string>
    <string>remote-notification</string>
</array>