Android的web视图 - 从缓存中载入图像 [英] Android WebView - Load Images from cache

问题描述

当我访问包含图像的网站，并没有表现出自己的格式，我的WebView可以节省大量的缓存对SD卡。当我尝试打开它们时，默认的Andr​​oid文件管理器显示未找到文件类型。然后，我改变了一些人的格式（主要是大尺寸的一个），jpg和宾果，他们是我在网页上看到的图像。

My webview saves lot of cache on SD Card when I visit a site which contains images and they don't show their format. When I try to open them, the default Android file manager says "File type not found". Then I changed the format of some of them(mostly the big size one) to .jpg and bingo, they are the images I saw on the webpage.

警句：我想从打开的图像，被保存为缓存，在另一个活动场所，我会去和所有的缓存文件重命名为.JPG，然后打电话给他们或者有另一种方式来做到这一点

Punchline: I want to open the images from that sites that are saved as cache, in another activity, would I have to go on and rename all the cache files to .jpg then call them or there is another way to do it.

感谢您。

推荐答案

您可以使用的 BitmapFactory 打开这些图像文件。你可以试试：

You can use the BitmapFactory to open these images files. You can try:

- decodeFile(String pathName)

如果它提出了一些问题的延伸，尝试德codeStream（InputStream为），它收到的InputStream ，它应该工作。

If it gives some problem with the extension, try decodeStream (InputStream is), it receive an InputStream and it should work.

您可以列出一个文件夹文件：

You can list a folder with File:

File f = new File(Environment
          .getExternalStorageDirectory()
          .getAbsolutePath());

File[] files = f.listFiles();
for (File file : files){
   //Do something with this file
}

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