Android Wear: measuring sensors and preventing ambient mode / sleep
<p>I have built an app for Android Wear that needs to measure the motion (accelerometer) sensors continuously for an hour or so for data collection purposes.  During operation, I have had problems with the device going into ambient mode (or sleep) and slowing down (or shutting off) the sensors.
As a result, I am using the following command to lock the screen on and it seems to work.  But it also seems wasteful, since I dont actually need the screen on, just the sensors running.</p>

<p>getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);  // Allow going to sleep</p>

<p>CUrrently, I have the onSensorsChanged() method in the main activity.  I am willing to put it in a service, but from what I understand that won't help if it is still in the main UI thread.  I could put it in its own thread, but I'm not sure that that will present Ambient Mode from slowing the sensors. 
Questions:
1) Is there way to prevent ambient mode?  Or if detected to turn it off?
2) If the sensors are in their own service/thread, can I let the activity go to sleep and still maintain sensor collection at full rate?
3) If the sensors are in their own service/thread, can I still send data over the dataapi to the phone?
Thanks.</p>