iOS中的截屏

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

UIGraphicsBeginImageContextWithOptions(self.view.frame.size, YES, 0.0);

[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];

UIImage* image = UIGraphicsGetImageFromCurrentImageContext();

UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);

}

- (void)image:(UIImage *)image didFinishSavingWithError:(NSError*)error contextInfo:(void*)contextInfo

{

NSLog(@"保存结束");

}