安卓：如何收集传感器值的一段固定的时间？ [英] Android: How to collect sensor values for a fixed period of time?

问题描述

我想收集约5秒加速度的值。什么是做一个适当的方式？

I want to collect for ca. 5 seconds the values of the Accelerometer. What is a proper way to do this?

我试了一下通过实现注册一个AsyncTask的和注销本身在传感器经理为加速度计，然后睡5秒。但睡在onSensorChanged方法的5S过程中不会被调用：D ...

I tried it by implementing an AsyncTask which registers and unregisters itself at the sensor manager for the accelerometer and then sleeps for 5 seconds. But during those 5s of sleeping the onSensorChanged method isn't invoked :D...

我的追求背后的动机是：
为了校准我的加速度我想收集一些秒传感器值（而手机趴在地板上），然后通过计算平均值得到偏差...

The motivation behind my sought is the following: In order to calibrate my accelerometer I want to collect for some seconds sensor values (while the phone is lying on the floor) and then get the bias by computing the mean values...

我AP preciate任何暗示！

I appreciate any hint!

推荐答案

假设你开始你传感器onResume：

Assuming you are starting your sensors in onResume:

/**
 * start sensors
 */
public void onResume() {
    mSensorManager.registerListener(mListener, mSensorAcceleration, SensorManager.SENSOR_DELAY_GAME);
    mSensorManager.registerListener(mListener, mSensorMagnetic, SensorManager.SENSOR_DELAY_GAME);
    Handler h = new Handler();
    h.postDelayed(new Runnable() {

        @Override
        public void run() {
        //    do stuff with sensor values
            mSensorManager.unregisterListener(mListener);               
        }
    }, 5000);
...

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