从 UIWebView 点击并按住保存图像 [英] Tap and hold save image from UIWebView

问题描述

当用户点击并按住图像时，我希望能够将图像从 UIWebView 保存到照片应用.

I want to be able to save an image to the photos app from a UIWebView when the user taps and holds on the image.

当我在 Objective-c 中编程时，我已经设法从 UIWebView 保存图像，但是现在我正在快速学习它似乎有点不同.

I've managed to save an image from a UIWebView when I was programming in objective-c however now as I'm learning swift it seems to be kind of different.

这就是我在 Objective-C 中的做法:

This is how I did it back in Objective-C:

-(IBAction)saveWeb:(id)sender 
{

    UIGraphicsBeginImageContext(webview.frame.size);
    [self.webview.layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage *viewImage =UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    UIImageWriteToSavedPhotosAlbum(viewImage, nil,nil,nil); 

}  

推荐答案

您现在拥有的代码片段更倾向于截取网页的屏幕截图.

The snippet you have right now is more towards taking a screen shot of the web page.

您可以结合手势识别器和 Javascript 来获取 HTML 页面中给定点的图像..

You can combine gesture recognizers and Javascript to get an image at a give point in a HTML page..

查看 https://stackoverflow.com/a/5607694/4236572.你可能想要实现类似的东西..

Have a look at https://stackoverflow.com/a/5607694/4236572 . You may want to implement something like that..

这篇关于从 UIWebView 点击并按住保存图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！