实例化并销毁Unity3D

Question

I need to instantiate and destroy a prefab on the run. I tried these:

public Transform prefab;     //I attached a prefab in Unity Editor

Object o = Instantiate(prefab);
//using this I cannot get the transform component (I don't know why) so useless

Transform o=(Transform)Instantiate(prefab);
//gives transform and transform component cannot be destroyed

GameObject o=(GameObject)Instantiate(prefab);
//invalid cast

So how to do that?

Answer 1

gives transform and transform component cannot be destroyed

Destroy the GameObject to which the Transform component is attached to:

GameObject.Destroy(o.gameObject);

Instantiate method returns the same type of the object passed as parameter. Since it's a Transform you can't cast it to GameObject . Try this:

GameObject o=((Transform)Instantiate(prefab)).gameObject;

Answer 2

You don't have to declare your Instance as Object, if you do you get the ancestor object which it has not the transform component.

public GameObject prefab;
GameObject obj = Instantiate(prefab); 

If you want get transform component just type obj.transform .
If you want destroy the object type Destroy(obj); .

Answer 3

Your codes does not make sense..

public Transform prefab;
Object o = Instantiate(prefab);

You are instantiating a Transform? Why dont you try attaching the prefab instead?

You should try:

public GameObject prefab; // attach the prefab in Unity Editor
GameObject obj = Instantiate(prefab);
GameObject.Destroy(obj);

Answer 4

I noticed the accepted answer is actually wrong.

When using the Instantiate function of the MonoBehaviour class we must specify the type of what we are instantiating. I highly recommend reading Instantiate API reference .

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To instantiate a prefab as a GameObject

GameObject g = Instantiate(prefab) as GameObject;

To instantiate a prefab as a Transform and provide a position in 3D space.

Transform t = Instantiate(prefab, new Vector3(1,10,11), new Quaternion(1,10,11,100));

To Destroy a component, which means you can destroy scripts attached to gameObjects as well as rigibodies and other components.

Destroy(g);

or

Destroy(t.gameObject)

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