问题描述
能不能给我一个例子，说明如何检测iPhone是向左移动还是向右移动。就像摇晃的长版本一样，我希望我的应用能够知道用户手臂是向右还是向左。想像一下你的手就像擦玻璃的雨刮器，手机末尾
can someone please give me an example of how you detect if the iphone is moving left or moving right. like a long version of a shake i want my app to be able to know if the users arm is going right or left. imagine your hand like a window wiper with the phone at the end
有什么想法吗？
谢谢，Sam： P
推荐答案
那将是加速度。x的值。想象一下，有3条线穿过您的iPhone：
1）一条垂直于iPhone屏幕并穿过它的线，即Z。
2）与您的iPhone屏幕平行的水平线屏幕上将是X（您要查找的内容）。
3）屏幕垂直和平行线，即Y。
That would be the acceleration.x value. Imagine 3 lines going through your iPhone:
1) a line perpendicular to your iPhone screen and going through it, that would be Z.
2) a horizontal and parallel line to your screen, that would be X (what you're looking for).
3) a vertical and parallel line to your screen, that would be Y.
因此，向左或向右移动iPhone将会在X图形中生成更改。向上或向下移动iPhone会在Y曲线图中产生变化。向前或向后移动iPhone会在Z图中产生变化。
希望这可以帮助您掌握加速度计的概念，
〜Natanavra。
So, moving the iPhone left or right will generate changes in the X graph. Moving the iPhone up or down will generate changes in the Y graph. Moving your iPhone forward or backward will generate changes in the Z graph.
Hope this helps you grasp the accelerometer's concept,
~ Natanavra.
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