如何播放音频文件只有在用户晃动iPhone？ [英] How to play an audio file ONLY while user is shaking iPhone?

问题描述

我读了许多关于如何检测震动的职位，但我不知道：

I've read a number of posts regarding how to detect shakes but I'm not sure:

1. 目前什么是检测抖动的最佳方式？

1. What is currently the best way to detect shakes?

• 和 -

如何播放音频文件的只有的当用户晃动iPhone？

How to play an audio file ONLY while the user is shaking the iPhone?

任何人都有一个建议，例子/教程或样品code？

Anyone have an advice, examples/tutorials or sample code?

感谢

推荐答案

使用的<一个href=\"http://developer.apple.com/iphone/library/documentation/UIKit/Reference/UIAccelerometer_Class/Reference/UIAccelerometer.html\"相对=nofollow> UIAccelerometer 贯彻<一个href=\"http://developer.apple.com/iphone/library/documentation/UIKit/Reference/UIAccelerometerDelegate_Protocol/UIAccelerometerDelegate/UIAccelerometerDelegate.html\"相对=nofollow> UIAccelerometerDelegate 在你的类协议。也许你可以做这样的事情：

Use the UIAccelerometer and implement the UIAccelerometerDelegate protocol in your class. Perhaps you could do something like this:

- (void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acc {
  float twoGs = 2.0;
  if ((acc.x * acc.x) + (acc.y * acc.y) + (acc.z * acc.z) > twoGs * twoGs) {
    if ([self paused]) {
      [self play];
    }
  } else {
    if ([self playing]) {
      [self pause];
    }
  }
}

有关暂停合适的实现，暂停，播放，播放选择。

for suitable implementations of the pause, paused, play, playing selectors.

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