如何从另一个 class 更改字符串值？

Question

public class Class1
{
    public string word;
    public string GetString()
    {
       ....
    }

}




public class Class2 : MonoBehaviour
{

    public Class1[] class1;



    void Start()
    {
        class1 = new Class1[3];
        getText();
    }




    void getText()
    {
        for (int i = 0; i < words.Length; i++)
        {
            class1[i].word = "new Text";
            class1[i].GetString();

        }
    }
}

How I can Change (word) from Class2 ?

I get this error: NullReferenceException: Object reference not set to an instance of an object

Answer 1

While you've initialized the class1 array, all its elements are null s, and you'd need to individually initialize each them before attempting to access their members.

void getText()
{
    for (int i = 0; i < words.Length; i++)
    {
        class1[i] = new Class1(); // Here!
        class1[i].word = "new Text";
        class1[i].GetString();

    }
}