Android缓存Webview图像？

Question

I've Listview activity each row content webview and the webview content article html code with images.

So far everything is perfect, but my problem is if the listview scrolled the webview lost images and reopen them again, and the listview become crazy.

I want to cache webview images to prevent it to reopen or download the images again. How?

I am new in Android and sorry for my English.

Any advice?

This is my webview settings:

    holder.message.addJavascriptInterface(new test_js(context), "Android");
    holder.message.getSettings().setJavaScriptEnabled(true);
   // holder.message.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT);
    holder.message.getSettings().setTextSize(WebSettings.TextSize.NORMAL);          

    //test
    holder.message.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
    holder.message.getSettings().setAppCacheMaxSize( 8 * 1024 * 1024 ); // 8MB
    holder.message.getSettings().setAppCachePath(context.getApplicationContext().getCacheDir().getAbsolutePath());
    holder.message.getSettings().setAllowFileAccess(true);
    holder.message.getSettings().setAppCacheEnabled(true);

but it won't cache the images it's redownloading them again when I scroll the listview!

Answer 1

I recommend you to use Universal-Image-Loader for loading and caching images when working with listview or recyclerview . The Universal-Image-Loader has option delayBeforeLoading(time) to prevent listview's scroll issues when there is item with images. And to cache other content just write the body of response to file and extract it to your listview.