wwmusic的专栏

当我的Project用Xcode5打开过后，然后又用Xcode4.x打开，选中XXXX.xib/storyboard文件时，有时会弹出 "The document “XXXX.xib/storyboard" could not be opened. Could not read archive" ，Xcode已给出解决方式 "Please use a newer version of Xcod

一、什么是iBeacon iBeacon是苹果公司2013年9月WWDC发布的 iOS7 上配备的新功能。它利用的是 BLE 中名为“通告帧”（Advertising）的广播帧。通告帧由配备 BLE 的设备定 期发出,只要是支持 BLE 的终端,都可以接收到信号。通告帧的有效载荷部分,写入了由 苹果定义的数据。 iBeacon 的数据大致由四部分信息组成: (1)UUID(univers