Unity C# - Array index out of range

Question

I'm having trouble with unity and here is the code The error message: ``` IndexOutOfRangeException: Array index is out of range. Sequence.fillSequenceArray () (at Assets/Scripts/Sequence.cs:43) Sequence.Start () (at Assets/Scripts/Sequence.cs:23) ``` Code: ``` public int[] colorSequence = new int[100]; public int level = 2; // Use this for initialization void Start () { anim = GetComponent("Animator") as Animator; fillSequenceArray (); showArray (); // just to know } // Update is called once per frame void Update () { } public void showArray(){ for (int i = 0; i < colorSequence.Length; i++) { Debug.Log ("Position " + i + ":" + colorSequence[i]); } } public void fillSequenceArray(){ for (int i = 0; i < level; i++) { int numRandom = Random.Range (0, 3); if (colorSequence[i] == 0) { colorSequence[i] = numRandom; } } } ``` I have tried to change the last `if` to `if (!colorSequence[i].Equals(null))`, or `if (colorSequence[i] == null)` and the same error occurs. Even if I delete this `if`,…

Accepted Answer

You have to check whether the the array contains a value at that index before attempting to access it. Doing otherwise will throw an error instead of returning null.

You can easily check it using the array's length property:

```
    if (colorSequence.Length > i) {
        colorSequence[i] = numRandom;
    }
```

Unity C# - Array index out of range

Solution

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