Question

unity报错NullReferenceException: Object reference not set to an instance of an object change.

public GameObject[] character;
public int index = 0;

private GameObject[] charactershow;

void Start () {

}

void Update () {
if (Input.GetKey (KeyCode.G)) {
index += 1;
if (index >= character.Length) {
index = 0;
}
characterchange (index);
}
if (Input.GetKey (KeyCode.F)) {
index -= 1;
if (index < 0) {
index = character.Length - 1;
}
characterchange (index);
}
}

void characterchange(int inde){
for (int i = 0; i < character.Length; i++) {
if (i == inde) {
charactershow [i].SetActive (true);
} else
charactershow [i].SetActive (false);
// charactershow [i].active = false;
}
}
void instantiationcharacter(){
for (int i = 0; i < character.Length; i++) {
charactershow[i]=(GameObject)(Instantiate(character[i],transform.position,transform.rotation));
}
characterchange(index);
}

}

Answer 1

你都没有调用instantiationcharacter来初始化charactershow，
在update调用它的时候肯定会报空指针异常啊