Android life cycle accelerometer and gyroscope

Hello,

I'm working on a mobile game that uses the accelerometer and gyroscope. When deployed to an android device, the game works well in the beginning. However, if the device sleeps, when I wake it up and try to continue playing the gyroscope, and accelerometer both stop working. Is there a way to hook into the android life cycle functions without writing a custom activity? The script that I'm using to update the gravity direction is below. It's very simple and does the job, until the phone sleeps. Also, can I provide a custom manifest without overriding the default unity activity (for using-permissions)?

Code (csharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class GravityDirectionUpdater : MonoBehaviour
5. {
6.     private static Quaternion m_quat;
7.     public float m_gravity = -29.8f;
8.  
9.     // Use this for initialization
10.     void Start ()
11.     {
12.         //Doesn't always work unless I put this here.
13.         Input.gyro.enabled = true;
14.  
15.         //TODO: reorient camera in scene to avoid transforming frame in scripts
16.         m_quat = Quaternion.AngleAxis ( -90, Vector3.up ) *
17.                  Quaternion.AngleAxis ( -90, Vector3.forward ) *
18.                  Quaternion.AngleAxis ( -90, Vector3.left );
19.     }
20.  
21.     // Update is called once per frame
22.     void Update ()
23.     {
24.         //I always see this, even after waking up
25.         Debug.Log ( "Updat gyro.enabled: " + Input.gyro.enabled.ToString () );
26.  
27.         //This makes no difference here
28.         Input.gyro.enabled = true;
29.  
30.         Physics.gravity = m_quat * ( Input.gyro.gravity.normalized * m_gravity );
31.  
32.     }
33. }

 

Have you tried turning off sleep?

Code (csharp):

1. Screen.sleepTimeout = -1;

May not suit your exact app but...

 

Hi John,
Thanks for the suggestion. It does prevent the problem and the annoyance of the screen dimming during play. The only thing I did different is that I used the unity constant.

Code (csharp):

1.  Screen.sleepTimeout = SleepTimeout.NeverSleep;

Cheers