解决办法：
在Xcode的菜单栏，依次进入：
【product】-【scheme】-【Edit Scheme】-【Run】-【Argument】-【Environment Variable】添加key Value【OS_ACTIVITY_MODE disable】
或快捷键操作：
快捷键 shift＋command ＋ 《
快速打开如下图的界面，在相应的位置
添加对应的参数 OS_ACTIVITY_MODE disable
遗留问题：还会出现Class PLBuildVersion is implemented in both /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/System/Library/PrivateFrameworks/AssetsLibraryServices.framework/AssetsLibraryServices (0x10a39a910) and /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/System/Library/PrivateFrameworks/PhotoLibraryServices.framework/PhotoLibraryServices (0x10a1c4210). One of the two will be used. Which one is undefined.持续更新。。
