NoSuchMethodError when calling putExtra

Hi all,

I am trying to construct an android intent and am getting a NoSuchMethodError when I call the putExtra function.

This is the text of the error;

java.lang.NoSuchMethodError: no non-static method with name='putExtra' signature='(Ljava/lang/String;L[Landroid.os.Parcelable;;)Ljava/lang/Object;' in class Ljava.lang.Object;

However, if I am reading it correctly, a function with that signature has existed for ages. Any idea what I could be doing wrong?

My code looks like this;

 AndroidJavaObject finalIntent = intentClass.CallStatic<AndroidJavaObject>("createChooser", targets[0], "Share via...");
 AndroidJavaClass parcelableClass = new AndroidJavaClass("android.os.Parcelable");
 AndroidJavaClass arrayClass  = new AndroidJavaClass("java.lang.reflect.Array");
 AndroidJavaObject arrayObject = arrayClass.CallStatic<AndroidJavaObject>("newInstance", parcelableClass, targets.Length);
 for (int i=1; i<targets.Length; ++i) {
    arrayClass.CallStatic("set", arrayObject, i, targets[i]);
 }
 
 finalIntent.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_INITIAL_INTENTS"), targetsArray);