是黄牌。从前的共享单车骑一次一元钱，甚至有的不要钱，而现在许多城市的共享单车价格达到每小时6.5元左右。有的网友抱怨说，如今共享单车的价格已经直追地铁。去年上半年，国内的众多共享单车企业经过一轮涨价后，在
I have a video in applications documents folder. I need it to be saved in camera roll. So, I used UISaveVideoAtPathToSavedPhotosAlbum method to save it in camera roll. It\'s working and I can see the
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