给她的信 黄舒骏 专辑：马不停蹄的忧伤 语种：国语 流派：Pop 本歌词于吾爱知道收集
I want to create an application could detect the number of spin when user rotates the iPhone device. Currently, I am using the Compass API to get the angle and try many ways to detect spin. Below is t
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