Enable/Disable Vr from Code

Enable/Disable VR from code

Include using UnityEngine.XR; at the top.

Call XRSettings.LoadDeviceByName("") with empty string followed by XRSettings.enabled = false; to disable VR in the start function to disable VR.

When you want to enable it later on, call XRSettings.LoadDeviceByName("daydream") with the VR name followed by XRSettings.enabled = true;.

You should wait for a frame between each function call. That requires this to be done a corutine function.

Also, On some VR devices, you must go to Edit->Project Settings->Player and make sure that Virtual Reality Supported check-box is checked(true) before this will work. Then you can disable it in the Start function and enable it whenever you want.

EDIT:

This is known to work on some VR devices and not all VR devices. Although, it should work on Daydream VR. Complete code sample:

IEnumerator LoadDevice(string newDevice, bool enable)
{
    XRSettings.LoadDeviceByName(newDevice);
    yield return null;
    XRSettings.enabled = enable;
}

void EnableVR()
{
    StartCoroutine(LoadDevice("daydream", true));
}

void DisableVR()
{
    StartCoroutine(LoadDevice("", false));
}

Call EnableVR() to enable vr and DisableVR() to disable it. If you are using anything other than daydream, pass the name of that VR device to the LoadDevice function in the EnableVR() function.

Daydream Non-VR Mode in Unity 5.4.2f-GVR13

Change your minimum api level in build setting to Android 7.0 'Nougat'.

Toggle A-Frame's vr-mode-ui dynamically

Currently the component doesn't support enabling/disabling much of the button. More of a one-time thing. This can be fixed but will file an issue.

In the meantime, it would be easier to simply toggle the visibility of the button using CSS:

document.querySelector('.a-enter-vr-button').style.visible = 'none';

Daydream Hybrid (NonVR/VR) App does not switch VR mode

So, I finally found the issue and will leave this answer for future reference.

I started over from scratch a few times. In the end, it was stupidity as I was just missing the two lines marked below

UnityEngine.VR.VRSettings.LoadDeviceByName("daydream");
// wait one frame                         //<--
UnityEngine.VR.VRSettings.enabled = true; //<--

LoadDeviceByName does initialize the Daydream GvrViewer as determined by logcat output, but it does not implicitly activate the StereoController.

I also uploaded the changes to github. Thus, you can find a bare, working Scene (starting in NonVR) and switching every 10 seconds for Unity 5.4.2f2-GVR13 on github: tag=StackoverflowAnswer

How can I enable the Virtual Reality Supported project setting from a Unity editor script?

Please try

PlayerSettings.virtualRealitySupported = true;

(While I didn't see this in Unity's PlayerSettings docs, I remembered the Oculus VR plugin did similar, so I dug there.)

Unity ARCore XR settings and Vuforia enable(or switch) at Runtime in Android UnityPlayer

No. You can't currently do this now but this might change in the future. The reason is because there is no way to disable ARCore at this moment. You can probably suggest that as a feature on their Github page and explain you need it.

For Vuforia, you can disable it with VuforiaBehaviour.Instance.enabled = false; and enable it by setting it to true again.

The problem is that you can't do the-same with ARCore. You might be able to do the-same thing by finding all ARCore components in the scene and disabling them but I am not sure if that will release the camera or even work at-all.

Stop, Disable or Pause head tracking google cardboard

Use OnHeadUpdated event

Following this code.

CardboardHead head;

void Start () {
    head = GameObject.Find("Head").GetComponent<CardboardHead>();
    head.OnHeadUpdated += Test_OnHeadUpdated;
}

private void Test_OnHeadUpdated(GameObject head_obj)
{
    head_obj.transform.rotation = Quaternion.identity;
    head_obj.transform.position = //the position when you stop cardboard;
}

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