如何在屏幕锁定时显示来电屏幕？

// 创建Notification Channel
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
    NotificationChannel channel = new NotificationChannel("incoming_call", "Incoming Calls", NotificationManager.IMPORTANCE_HIGH);
    NotificationManager manager = getSystemService(NotificationManager.class);
    manager.createNotificationChannel(channel);
}

// 发送通知
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, "incoming_call")
        .setSmallIcon(R.drawable.ic_call)
        .setContentTitle("Incoming Call")
        .setContentText("John Doe is calling")
        .setPriority(NotificationCompat.PRIORITY_HIGH)
        .setCategory(NotificationCompat.CATEGORY_CALL);

NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
notificationManager.notify(1, builder.build());

import CallKit

class CallManager: NSObject, CXProviderDelegate {
    let provider: CXProvider
    
    override init() {
        provider = CXProvider(configuration: CXProviderConfiguration(localizedName: "My App"))
        super.init()
        provider.setDelegate(self, queue: nil)
    }
    
    func reportNewIncomingCall(with uuid: UUID, handle: CXHandle, hasVideo: Bool = false, completion: ((Error?) -> Void)? = nil) {
        let callUpdate = CXCallUpdate()
        callUpdate.remoteHandle = handle
        callUpdate.hasVideo = hasVideo
        provider.reportNewIncomingCall(with: uuid, update: callUpdate) { error in
            if error == nil {
                // Answer the call automatically if desired
                self.provider.answer(completion: { error in
                    // Handle answer completion
                })
            }
            completion?(error)
        }
    }
}