Android的：替代onSensorChanged？当手机躺在其表背面没有加速度计数据（没有运动） [英] Android: Alternative to onSensorChanged? no ACCELEROMETER data when phone is lying on its back on a table( when no movement)

问题描述

所以我用这个code，以获得加速度的数据。当我在DDMS模式来检查什么我打印语句打印时，我注意到，当手机没有移动分毫打印。 IE浏览器。它在桌上。我想原因是，当手机不动onSensorChanged不叫，然后将其当手机再次开始转动调用。如果我想不管手机是否是移动的还是不捕获数据，我应该使用一些其他的功能？其它方法吗？或任何解决方案？任何有助于AP preciated。

谢谢！

 公共无效onSensorChanged（SensorEvent事件）{    StringBuffer的BUFF =新的StringBuffer（）;
    buff.append（将String.valueOf（event.timestamp））;
    buff.append（逗号）;
    buff.append（将String.valueOf（event.values​​ [0]））;
    buff.append（逗号）;
    buff.append（将String.valueOf（event.values​​ [1]））;
    buff.append（逗号）;
    buff.append（将String.valueOf（event.values​​ [2]））;    mCurrentFile.println（buff.toString（））;
    mCurrentFile.write（buff.toString（）+'\\ N'）;    的System.out.println（**+ buff.toString（））;}
 

解决方案

您可以有一个线程监听传感器变化（即 onSensorChanged（）将写数据转换成全局变量），并运行一个计时器另一个线程（看看 postDelayed 的 http://developer.android.com/reference/android/os/Handler.html ），将在设定的时间阅读。如果没有变化，那么这将再次读取相同的数据。简单，干净，漂亮的电池。

So I'm using this code to get the Accelerometer data. When I am in the DDMS mode to check what my print statement is printing, I noticed that nothing is printed when the phone does not move. ie. its on the table. I think the reason is that onSensorChanged is not called when the phone does not move, and then its called when the phone starts moving again. If i want to capture data regardless of whether the phone is moving or not, should I use some other function? Any Alternatives? or Any solution? Any helps appreciated.

Thanks!

public void onSensorChanged(SensorEvent event) {  

    StringBuffer buff = new StringBuffer();
    buff.append(String.valueOf(event.timestamp));
    buff.append(comma);
    buff.append(String.valueOf(event.values[0]));
    buff.append(comma);
    buff.append(String.valueOf(event.values[1]));
    buff.append(comma);
    buff.append(String.valueOf(event.values[2]));

    mCurrentFile.println(buff.toString());
    mCurrentFile.write(buff.toString()+ '\n');

    System.out.println( "**" + buff.toString());

}

解决方案

You can have one thread listening to the sensor changes (i.e., onSensorChanged() that will write the data into global variables) and another thread running a timer (look at postDelayed, http://developer.android.com/reference/android/os/Handler.html) that will read it at set times. If there are no changes, then it will read the same data again. Easy, clean, and nice to the battery.

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