Which thread invokes SensorEventListener.onSensorChanged
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by Christoph Heindl
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Published on 2010-05-04T05:44:04Z
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2010/05/04
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From my records it seems that SensorEventListener.onSensorChanged callback is called by the same thread that registered the callback. I.e there must be some message-queue synchronization going on in the background which allows the activitys UI-Thread to handle the callbacks.
That leads to my question: Is there a need to synchronize SensorEventListener.onSensorChanged with the activitys UI-thread, assuming that the activitys UI-thread registered the SensorEventListener?
I cannot find any documentation references, but can see various examples calling invalidate() unsychronized or synchronize the entire callback.
I used something along the lines of
Log.i(TAG, "" + Thread.currentThread().getId());
to retrieve threading information.
I'm running android 2.1 update1.
Best regards, Christoph
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