奇怪的空指针异常 [英] Strange null pointer exception

问题描述

我有以下全局数组...

I've got the following global array...

public static float camObjCoord[] = new float[8000];

我有一种方法可以将值输入到它的索引中，我正在像这样发送它们...

I've got a method feeding values into its indexes I'm sending them like so...

layers.addcube(-6, -2, -6, -2);

i 是一个类变量，声明为..

i is a class variable declared as..

int i = 0;

并且层被声明为...

GLLayer layers = new GLLayer(this);

但是当我这样做时，我在...处收到 NullPointerException 异常

But when I do I get a NullPointerException at....

public void addcube(float highx, float lowx, float highz, float lowz){
    //Constructing new cube...

    cubes++;
    float highy = 4.5f;
    float lowy = 2.5f;

    //FRONT
    Global.camObjCoord[i] = highx; //null pointer here.

有谁知道为什么它给我一个空指针?还有更多代码，但我认为只提供相关内容就足够了.

Does anyone have any idea why it's giving me a null pointer? There is more code but I thought it'd be sufficent to give you only what's relevant.

谢谢

推荐答案

试试改成这样:

public final static float camObjCoord[] = new float[8000];

正如我假设您在这里更新 camObjCoord 并将其设置为 null.否则，我看不到您如何在该行中获得 NullPointerException.

As I assume you somwehere update camObjCoord and set it to null. Otherwise I do not see how you could get a NullPointerException in that line.

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