运行时报错如下：
This app has crashed because it attempted to access privacy-sensitive data without a usage description. The app's Info.plist must contain an NSPhotoLibraryUsageDescription key with a string value explaining to the user how the app uses this data.
打开后添加权限代码就可以了，添加什么权限代码可查看报错日志，里面说缺少NSPhotoLibraryUsageDescription这个权限添加如下代码既可以了,以后此类问题都可以这样解决。NSPhotoLibraryUsageDescriptionphotoLibraryUsageDescription下面其他的部分权限代码。NSMicrophoneUsageDescriptionmicrophoneDesciptionNSCameraUsageDescriptioncameraDesciptionNSPhotoLibraryUsageDescriptionphotoLibraryDesciption
