iOS Extension Today 扩展真机不显示和错误can attach to it by selecting Debug > Attach to Process

iOS8中Today扩展遇到在模拟器中OK，在5S以上真机就会失败的问题，还会报can attach to it by selecting Debug > Attach to Process 之类的错误，之前一直以为是Xcode的BUG，其实想想只在5S上出现，就应该想到64位编译的问题了

解决方法：

1、Build Settings->Architectures 选择 Standard architectures (armv7, arm64)

2、Build Settings->Valid Architectures设定 armv7 armv7s armv8 arm64

3、Build Settings->Build Active Architectures Only设定为 NO

4、扩展Today的Target按如上设置