如果你能就我的问题提出建议,我会很感激。
我正在使用适用于Unity3D和Android插件的Vuforia SDK处理AR应用。 我的场景中有几个ImageTargets和3D模型。 我使用Android插件的类看起来像这样:
public class AssetBundleAugmenter : MonoBehaviour, ITrackableEventHandler
{
void Start()
{
StartCoroutine(DownloadAndCache());
mTrackableBehaviour = GetComponent<TrackableBehaviour>();
if (mTrackableBehaviour)
{
mTrackableBehaviour.RegisterTrackableEventHandler(this);
}
init();
}
public void OnTrackableStateChanged(
TrackableBehaviour.Status previousStatus,
TrackableBehaviour.Status newStatus)
{
if (newStatus == TrackableBehaviour.Status.DETECTED ||
newStatus == TrackableBehaviour.Status.TRACKED ||
newStatus == TrackableBehaviour.Status.EXTENDED_TRACKED)
{
if (!mAttached && mBundleInstance)
{
// if bundle has been loaded, let's attach it to this trackable
//...
}
OnTrackingFound();
}
else
{
OnTrakingLost();
}
}
private void OnTrackingFound()
{
if (mTrackableBehaviour is ImageTargetAbstractBehaviour)
{
GetJavaObject().Call("OnMarkerFound");
}
}
void onButtonClicked(int index)
{
//Changing current 3D model material
}
#if UNITY_ANDROID
private AndroidJavaObject javaObj = null;
//LISTENING TO BUTTON CLICK EVENTS FROM ANDROID
private sealed class EventListner : AndroidJavaProxy
{
private AssetBundleAugmenter mReceiver;
public EventListner(AssetBundleAugmenter receiver)
: base("com.mypackage.myapp.ImageTargetTracker$Listner")
{
mReceiver = receiver;
}
public void onButtonClicked(int index) //change color of model
{
mReceiver.onButtonClicked(index);
}
}
private AndroidJavaObject GetJavaObject()
{
if (javaObj == null)
{
javaObj = new AndroidJavaObject("com.mypackage.myapp.ImageTargetTracker");
}
return javaObj;
}
AndroidJavaObject activity;
private void init()
{
// Retrieve current Android Activity from the Unity Player
AndroidJavaClass jclass = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
activity = jclass.GetStatic<AndroidJavaObject>("currentActivity");
// Pass reference to the current Activity into the native plugin,
GetJavaObject().Call("setActivity", activity, new EventListner(this));
}
#else
void init() {}
#endif
}
所以我将这个脚本附加到场景中的所有ImageTargets
,我知道这一定是错的,因为UnityPlayer
在init()
函数中多次初始化。
我尝试将脚本附加到我的场景中的ARCamera
,并仅在那里编写初始化,但我不确定如何在使用{{1}的脚本中访问currentActivity
}。另外,我使用了监听器 - 我的插件中的界面,它监听按钮点击以统一激发某些功能。
我的插件代码:
ImageTargets
那么,我怎样才能在Unity中一次性全局初始化Activity和我的插件类,并在我的所有脚本中使用它们?