How I can Save WebView Contents to show even when no network available?

Question

I am creating a app and using WebView for open URL. I see some apps offer "Save Page"(A web page) option to user.

I want to know how to Save a page from my WebView so that I can show it to user when it request.

Answer 1

Maybe using a cache is the best way... for that you should check http://developer.android.com/reference/android/webkit/WebSettings.html

"Manages settings state for a WebView. When a WebView is first created, it obtains a set of default settings. These default settings will be returned from any getter call. A WebSettings object obtained from WebView.getSettings() is tied to the life of the WebView. If a WebView has been destroyed, any method call on WebSettings will throw an IllegalStateException."

Especifically:

public static final int **LOAD_CACHE_ONLY**

Since: API Level 1 Don't use the network, load from cache only. Use with setCacheMode(int). Constant Value: 3 (0x00000003)

Or

public static final int **LOAD_CACHE_ELSE_NETWORK**

Since: API Level 1 Use cache if content is there, even if expired (eg, history nav) If it is not in the cache, load from network. Use with setCacheMode(int). Constant Value: 1 (0x00000001)

Update1:

hmm "crappy code of all life" for example:

public static InputStream fetch(String url) throws MalformedURLException,
        IOException {
    DefaultHttpClient httpClient = new DefaultHttpClient();
    HttpGet request = new HttpGet(url);
    HttpResponse response = httpClient.execute(request);
    return response.getEntity().getContent();
}


private static String convertStreamToString(InputStream is)
        throws IOException {

    StringWriter writer = new StringWriter();
    IOUtils.copy(is, writer, "UTF-8");
    return writer.toString();
}

So, you can fetch a url with InputStream fetch(String url) an then convert that stream to String with private static String convertStreamToString(InputStream is) and save that stream to a file, later you can load that content to a webview..... to read later

Update2:

Or you can do some Java Serialization stuff... cant remember if this work on android xD

Discover the secrets of the Java Serialization API http://java.sun.com/developer/technicalArticles/Programming/serialization/