I am just a beginner in the application development industry. I know the accelerometer can be used to return the current acceleration along three axis in meters per second squared (m/s2). But I have come to know that an accelerometer can also be use as speedometer.
I want to know how I can use accelerometer to determine distance traveled by Android device between points of interest. If it is possible, then how can I implement it? I have seen a similar question "how do I measure the distance traveled by an Iphone using accelerometer" How do I measure the distance traveled by an iPhone using the accelerometer?. But I didn't come to a point.
Thank You, Arslan
You get position by integrating the linear acceleration twice but the error is horrible. It is useless in practice.
Here is an explanation why (Google Tech Talk) at 23:20. I highly recommend this video.
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You can combine it with GPS positioning, and filter data with Kalman filter. GPS give rough but stable position, while accelerometer give more accerate but drifting position.
来源：https://stackoverflow.com/questions/6352681/how-to-use-accelerometer-to-measure-distance-for-android-application-development