Has anyone implemented an Android Shake Detector that works well on most
phones?
I thought it would be fairly simple to implement but I keep getting
false results. Basically, what I'm doing is setting up a sensor
Listener, checking to make sure it is a
SensorManager.SENSOR_ACCELEROMETER event, then only checking the event
if the last event I received was more than 50 milliseconds ago (to try
to reduce the amount of checking I do)... Then I look for 3 "Shakes"
within 4 seconds... A "Shake" to me being a speed reading of over 1000
followed by a speed reading of less than 400 within 1 second.
If I don't get three "Shakes" within 4 seconds then the counter is reset
to zero.
At times it seems to work well... but I continue to have instances where
I just pick up the phone, and it triggers all three shakes, which makes
very little sense to me.. because at other times, I can physically shake
the phone quite hard, and not trigger all three shakes... As I said.. it
works about 90% of the time correctly, but a 10% error rate is making
the feature I want to implement useless.
Anyone have a better formula or some links?
Thanks..,
Brad Gies
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