iOS 截屏监听

苹果有提供方法，可以注册监听，当用户有截屏操作的时候会通知我们：

1、注册：

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didTakeScreenshot:) name:UIApplicationUserDidTakeScreenshotNotification object:nil];

2、回调：

- (void)didTakeScreenshot:(NSNotification *)notification {

}

3、再次一并献上截屏数据获取

- (NSData*)screenshotWithRect:(CGRect)rect{

    UIView *view = [UIApplication sharedApplication].windows[0].rootViewController.view;

    UIGraphicsBeginImageContextWithOptions(view.bounds.size, NO, [UIScreen mainScreen].scale);

    [view.layer renderInContext:UIGraphicsGetCurrentContext()];

    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();

    return UIImagePNGRepresentation(image);

}

本文地址：https://blog.csdn.net/jiangziwei/article/details/112556356