从WebView中的网站保存图像？ [英] Save images from website inside a WebView?

问题描述

我四处搜索，大多数答案都与静态图像有关，即只有一个图像，而URL已经预先定义。

I searched around and most of the answers relate to images that are static, i.e just the one image and the URL is already pre-defined.

我设置了一个WebView，可以将用户带到一个充满照片的网站。我希望用户能够按住图像并获得将其保存到手机的选项。那可能吗？我当然不知道URL或任何东西，因为图像每天都在变化，而且有很多。

I have a WebView set up to take users to a website full of photos. I want the user to be able to hold down on an image and get the option to save it to their phone. Is that possible? I of course don't know the URL or anything because the images change every day and there are a lot of them.

网站上的图片都有自己的页面如果这有任何区别。它只是一个带图像的网站。无需身份验证。就像在桌面上一样，您可以右键单击并保存图像，我可以使用WebView执行此操作吗？必须有一种方法，因为它可以在默认浏览器中使用。

The images on the website all have their own page if that makes any difference. It's just a website with images. No authentication is required. Just like on a Desktop you can right click and save an image, can I do that with a WebView? There must be a way since it's possible in the default browser.

编辑：我一直在使用一个名为'Reddit is fun'的应用程序，它具有此功能，并且在面对它，它看起来像一个带操作栏的简单WebView，所以我认为它是可能的。

I've been using an app called 'Reddit is fun' that has this function and on the face of it, it looks like a simple WebView with action bar so I presume it's possible.

我很感激任何帮助。

推荐答案

对，我弄清楚了。

使用上下文菜单我可以按住图像来拉取它的URL。然后我可以让它使用DownloadManager启动下载。这一点是不言自明的，所以我将显示获取图像URL的代码。

Using a context menu I can hold down on an image to pull it's URL. Then I can have it initiate a download using DownloadManager. That bit is self-explanatory so I'll show the code to getting the image URL.

public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
    // Confirm the view is a webview
    if (v instanceof WebView) {                
        WebView.HitTestResult result = ((WebView) v).getHitTestResult();

        if (result != null) {
            int type = result.getType();

            // Confirm type is an image
            if (type == WebView.HitTestResult.IMAGE_TYPE || type == WebView.HitTestResult.SRC_IMAGE_ANCHOR_TYPE) {
                String imageUrl = result.getExtra();
                Toast.makeText(this, imageUrl, Toast.LENGTH_LONG).show();

            }
        }
    }
}

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