Configuration to disable Android sensors, and query more sensors as needed.

[Alex2782]

I could not find any settings to disable the sensors (to save battery and CPU).
Normal apps and games will rarely use the sensor data.

There are other sensors, e.g. TYPE_LIGHT, which many smartphones should have. I think this sensor could also be used creatively in an app or game.

https://developer.android.com/guide/topics/sensors/sensors_overview

As a best practice you should always disable sensors you don't need, especially when your activity is paused. Failing to do so can drain the battery in just a few hours because some sensors have substantial power requirements and can use up battery power quickly.

https://github.com/godotengine/godot/blob/master/platform/android/java/lib/src/org/godotengine/godot/Godot.kt#L91
https://github.com/godotengine/godot/blob/master/platform/android/java/lib/src/org/godotengine/godot/Godot.kt#L496

---

Sensor Rate-Limiting
https://developer.android.com/guide/topics/sensors/sensors_overview#sensors-rate-limiting

To protect potentially sensitive information about users, if your app targets Android 12 (API level 31) or higher, the system places a limit on the refresh rate of data from certain motion sensors and position sensors. This data includes values recorded by the device's accelerometer, gyroscope, and geomagnetic field sensor.

If you call the registerListener() method to monitor sensor events, the sensor sampling rate is limited to 200 Hz. This is true for all overloaded variants of the registerListener() method.

android.permission.HIGH_SAMPLING_RATE_SENSORS

Is the limitation still sufficient for XR apps?
In the 'Android Export' dialog could not find this permission yet.

[Calinou]

Is the limitation still sufficient for XR apps?

200 Hz should be sufficient, as XR displays generally don't exceed 120 Hz.

[Gromph]

We have some ANR's reported to Google Play with this call stack:

"main" tid=1 Native
  #00  pc 0x000000000007f33c  /apex/com.android.runtime/lib64/bionic/libc.so (syscall+28)
  #01  pc 0x000000000014b094  /apex/com.android.runtime/lib64/libart.so (art::ConditionVariable::WaitHoldingLocks(art::Thread*)+148)
  #02  pc 0x0000000000590744  /apex/com.android.runtime/lib64/libart.so (art::GoToRunnable(art::Thread*) (.llvm.14603686783979941606)+460)
  #03  pc 0x0000000000590534  /apex/com.android.runtime/lib64/libart.so (art::JniMethodEnd(unsigned int, art::Thread*)+28)
  at android.os.BinderProxy.transactNative (Native method)
  at android.os.BinderProxy.transact (BinderProxy.java:510)
  at android.hardware.display.IDisplayManager$Stub$Proxy.getDisplayInfo (IDisplayManager.java:722)
  at android.hardware.display.DisplayManagerGlobal.getDisplayInfo (DisplayManagerGlobal.java:140)
  at android.view.Display.updateDisplayInfoLocked (Display.java:1126)
  at android.view.Display.getRotation (Display.java:785)
  at org.godotengine.godot.Godot.getRotatedValues (Godot.kt:866)
  at org.godotengine.godot.Godot.onSensorChanged (Godot.kt:896)
  at android.hardware.SystemSensorManager$SensorEventQueue.dispatchSensorEvent (SystemSensorManager.java:837)
  at android.os.MessageQueue.nativePollOnce (Native method)
  at android.os.MessageQueue.next (MessageQueue.java:336)
  at android.os.Looper.loop (Looper.java:174)
  at android.app.ActivityThread.main (ActivityThread.java:7403)
  at java.lang.reflect.Method.invoke (Native method)
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:502)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:980)

The first thing I did was look for a way to disable monitoring sensors, didn't find one, so just commented out the code.

[Alex2782]

better report this issue also here (button "New issue"): https://github.com/godotengine/godot/issues?q=is%3Aissue%20state%3Aopen%20onSensorChanged

[Gromph]

Reported: godotengine/godot#99733