我有一个web视图中,我可以访问网页。是否有可能,当我脱机访问,例如到已经previously下载的图片吗? 而且如果可能的话我该怎么办呢?
I have a WebView in which I can access to web pages. Is it possible, when I am offline to have access for example to the images that have been previously downloaded? And if it is possible how can I do this?
在此先感谢。
是的,你可以,至少在Android 2.3的低。
Yes, you can, at least for Android 2.3 and lower.
如果你想看到整个缓存文件夹,它是坐落于此:
If you want to see the entire cache folder, it is situated here:
<android cache dir>/<your app package>/cache/webviewCache/
如果你已经知道缓存图片的网址,就可以得到实际的文件,以便:
If you already know the URL of the cached image, you can get the actual file so:
String uri = "http://the url of the image that you need";
String hashCode = String.format("%08x", uri.hashCode());
File file = new File(new File(getCacheDir(), "webviewCache"), hashCode);
// if the call file.exist() returns true, then the file presents in the cache