Unity 4.6 - Access Button By Script

Questions & Answers
1

I have a button on my stage ( Camera - > Canvas → JumpButton).

I have prefab that is instantiated at runtime. That prefab has a VehicleController script (C#) that contains a Jump() function.

All I want to do is simply add listener (in my VehicleController script) to that button so that it fires the Jump() function.

I’ve seen this post: Unity 4.6: GetComponent().onClick... how do you add an event to button click? - Unity Answers but I cannot get it to work with my setup. I’m having trouble targeting or access by name the JumpButton that is already in the scene.

In my VehicleController script:

Button JumpButton = null; // assign in the editor?
	
	void Start() { 

		//JumpButton = //How do I find the desired button in the scene?

		JumpButton.onClick.AddListener(() => {MyJumpFunction(); });
	}

Any help would be greatly appreciated.

2

The JumpButton variable should be assigned by the thing that instantiates the Vehicle. So if you have a vehicleSpawner, you do something like this:

public Button JumpButton; //Assign in editor

void SpawnVehicle() {
    GameObject vehicle = Instantiate(vehiclePrefab) as GameObject;
    VehicleController controller = vehicle.GetComponent<VehicleController>();
    controller.JumpButton = JumpButton;
}

If you do this, the VehicleController’s Start will be run when the JumpButton assigned, and you can use it as you’re doing it in the script. Hope that helps!