iOS截图并保存(Objective-C)

snip.m

- (void)saveImageToPhotos:(UIImage *)image {
    UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:),nil);
}

-  (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo {
    if (error == nil) {
        NSLog(@"保存成功");
    } else {
        NSLog(@"失败");
    }
}

- (UIImage *)snipImage {
    UIGraphicsBeginImageContext(self.view.frame.size);
    CGContextRef contextRef = UIGraphicsGetCurrentContext();
    [self.view.layer renderInContext:contextRef];
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    
    return image;
}