Version: 2018.2
public void OnActiveBuildTargetChanged (BuildTarget previousTarget, BuildTarget newTarget);

Parameters

previousTargetThe build target before the change.
newTargetThe new active build target.

Description

This function is called automatically when the active build platform has changed.

using UnityEngine;
using UnityEditor;
using UnityEditor.Build;

public class ActiveBuildTargetListener : IActiveBuildTargetChanged { public int callbackOrder { get { return 0; } } public void OnActiveBuildTargetChanged(BuildTarget previousTarget, BuildTarget newTarget) { Debug.Log("Switched build target to " + newTarget); } }