iOS10相册相机闪退bug

iOS10系统下调用系统相册、相机功能，遇到闪退的情况，描述如下：

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.

修复方法：
在info.plist文件下添加

相机权限

<key>NSCameraUsageDescription</key>

<string>cameraDesciption</string>

相册权限

<key>NSPhotoLibraryUsageDescription</key>

<string>photoLibraryDesciption</string>