找不到类型或名称空间名称“ ICloudRecoEventHandler”

Question

已编辑

  

我将Unity版本更改为2018.3.8f1，将Vuforia版本更改为8.0.10，它可以正常工作。但是有人知道如何在最新版本中工作吗？

我正在关注this tutorial以在Unity中实现Cloud Reco。

我的SimpleCloudHandler.cs脚本中的错误：

  

错误CS0246：找不到类型或名称空间名称'ICloudRecoEventHandler'（您是否缺少using指令或程序集引用？）

我的Unity版本为2018.3.14f1 我的Vuforia版本是8.1.7

本教程之后的代码：

using Vuforia;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class SimpleCloudHandler : MonoBehaviour, ICloudRecoEventHandler 
{
    private CloudRecoBehaviour mCloudRecoBehaviour;
    private bool mIsScanning = false;
    private string mTargetMetadata = "";
    public ImageTargetBehaviour ImageTargetTemplate;

    public void OnInitialized(TargetFinder targetFinder) {
        Debug.Log ("Cloud Reco initialized");
    }

    public void OnInitError(TargetFinder.InitState initError) {
        Debug.Log ("Cloud Reco init error " + initError.ToString());
    }

    public void OnUpdateError(TargetFinder.UpdateState updateError) {
        Debug.Log ("Cloud Reco update error " + updateError.ToString());
    }

    public void OnStateChanged(bool scanning) {
        mIsScanning = scanning;
        if (scanning)
        {
            // clear all known trackables
            var tracker = TrackerManager.Instance.GetTracker<ObjectTracker>();
            tracker.TargetFinder.ClearTrackables(false);
        }
    }

    // Here we handle a cloud target recognition event
    public void OnNewSearchResult(TargetFinder.TargetSearchResult targetSearchResult) {
        TargetFinder.CloudRecoSearchResult cloudRecoSearchResult = 
            (TargetFinder.CloudRecoSearchResult)targetSearchResult;
        // do something with the target metadata
        mTargetMetadata = cloudRecoSearchResult.MetaData;
        // stop the target finder (i.e. stop scanning the cloud)
        mCloudRecoBehaviour.CloudRecoEnabled = false;

        // Build augmentation based on target
        if (ImageTargetTemplate) {
            // enable the new result with the same ImageTargetBehaviour:
            ObjectTracker tracker = TrackerManager.Instance.GetTracker<ObjectTracker>();
            ImageTargetBehaviour imageTargetBehaviour =
                (ImageTargetBehaviour)tracker.TargetFinder.EnableTracking(
            targetSearchResult, ImageTargetTemplate.gameObject);
        }
    }

    void OnGUI() {
        // Display current 'scanning' status
        GUI.Box (new Rect(100,100,200,50), mIsScanning ? "Scanning" : "Not scanning");
        // Display metadata of latest detected cloud-target
        GUI.Box (new Rect(100,200,200,50), "Metadata: " + mTargetMetadata);
        // If not scanning, show button
        // so that user can restart cloud scanning
        if (!mIsScanning) {
            if (GUI.Button(new Rect(100,300,200,50), "Restart Scanning")) {
            // Restart TargetFinder
            mCloudRecoBehaviour.CloudRecoEnabled = true;
            }
        }
    }

    // Start is called before the first frame update
    void Start()
    {
        mCloudRecoBehaviour = GetComponent<CloudRecoBehaviour>();

        if (mCloudRecoBehaviour){
            mCloudRecoBehaviour.RegisterEventHandler(this);
        }
    }

    // Update is called once per frame
    void Update()
    {

    }
}

Answer 1

我在Unity 2019.1.12f1上遇到了相同的问题。问题在于该教程已过时。参见例如this site说ICloudRecoEventHandler重命名为IObjectRecoEventHandler和this post，建议在其中使用两个Vuforia示例BASE和BOOKS。

我最近已经研究了此问题，发现以下脚本的工作方式为SimpleCloudHandler.cs。

如果您愿意，请保持联系，我们会互相帮助！

using UnityEngine;
using Vuforia;
public class SimpleCloudHandler : MonoBehaviour, IObjectRecoEventHandler
{
    private CloudRecoBehaviour mCloudRecoBehaviour;
    private bool mIsScanning = false;
    private string mTargetMetadata = "";
    // Use this for initialization
    void Start()
    {
        // register this event handler at the cloud reco behaviour
        mCloudRecoBehaviour = GetComponent<CloudRecoBehaviour>();

        if (mCloudRecoBehaviour)
        {
            mCloudRecoBehaviour.RegisterEventHandler(this);
        }
    }

    public void OnInitialized(TargetFinder targetFinder)
    {
        Debug.Log("Cloud Reco initialized");
    }
    public void OnInitError(TargetFinder.InitState initError)
    {
        Debug.Log("Cloud Reco init error " + initError.ToString());
    }
    public void OnUpdateError(TargetFinder.UpdateState updateError)
    {
        Debug.Log("Cloud Reco update error " + updateError.ToString());
    }


    /// <summary>
    /// when we start scanning, unregister Trackable from the ImageTargetBehaviour, 
    /// then delete all trackables
    /// This function is from CloudRecoEventHandler.cs from Vuforia Base sample
    /// </summary>
    public void OnStateChanged(bool scanning)
    {
        Debug.Log("<color=blue>OnStateChanged(): </color>" + scanning);

        // Changing CloudRecoBehaviour.CloudRecoEnabled to false will call:
        // 1. TargetFinder.Stop()
        // 2. All registered ICloudRecoEventHandler.OnStateChanged() with false.

        // Changing CloudRecoBehaviour.CloudRecoEnabled to true will call:
        // 1. TargetFinder.StartRecognition()
        // 2. All registered ICloudRecoEventHandler.OnStateChanged() with true.
    }


    // Here we handle a cloud target recognition event
    public void OnNewSearchResult(TargetFinder.TargetSearchResult targetSearchResult)
    {
        TargetFinder.CloudRecoSearchResult cloudRecoSearchResult =
            (TargetFinder.CloudRecoSearchResult)targetSearchResult;
        // do something with the target metadata
        mTargetMetadata = cloudRecoSearchResult.MetaData;
        // stop the target finder (i.e. stop scanning the cloud)
        mCloudRecoBehaviour.CloudRecoEnabled = false;
    }


    void OnGUI()
    {
        // Display current 'scanning' status
        GUI.Box(new Rect(100, 100, 200, 50), mIsScanning ? "Scanning" : "Not scanning");
        // Display metadata of latest detected cloud-target
        GUI.Box(new Rect(100, 200, 200, 50), "Metadata: " + mTargetMetadata);
        // If not scanning, show button
        // so that user can restart cloud scanning
        if (!mIsScanning)
        {
            if (GUI.Button(new Rect(100, 300, 200, 50), "Restart Scanning"))
            {
                // Restart TargetFinder
                mCloudRecoBehaviour.CloudRecoEnabled = true;
            }
        }
    }
}