相机权限

//需要添加#import <AVFoundation/AVFoundation.h>

NSString *mediaType = AVMediaTypeVideo;
AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:mediaType];
if(authStatus == ALAuthorizationStatusRestricted || authStatus == ALAuthorizationStatusDenied){

     NSLog(@"不允许访问相机");
    //跳转到设置页面中自己的应用下
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
    
}

相册权限

//需要添加#import <AssetsLibrary/AssetsLibrary.h>

ALAuthorizationStatus author = [ALAssetsLibrary authorizationStatus];
if (author == ALAuthorizationStatusRestricted || author ==ALAuthorizationStatusDenied)
{
     NSLog(@"不允许访问相册");
    //跳转到设置页面中自己的应用下
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
}

注意

在更改了权限之后，app会自动关闭， 然后试了一下其他的app同样会出现这样的问题，这个崩溃是系统造成的，不知道是它的bug还是它确实需要强行杀掉你的app