Webview not loading offline cached data

Question

I am having a problem with Webview in that it will not use the cache. I start my app up, load the HTML5 page, then back out of the page, enter airplane mode on the phone, then try to go to the web page again. It should be cached, but I get a message saying that the URL could not be retrieved.

Here is my code pertaining to this. Am I doing something wrong???

String weblink = "http://abcd.com";
final ConnectivityManager conMgr =  (ConnectivityManager)
getSystemService(Context.CONNECTIVITY_SERVICE);

final NetworkInfo activeNetwork = conMgr.getActiveNetworkInfo();

if (activeNetwork != null && activeNetwork.isConnected()) {
    progressBar = ProgressDialog.show(this, "Please Wait", "loading online..");
    mWebview.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT);
    mWebview.getSettings().setAppCacheMaxSize(1024*1024*8);
    mWebview.loadUrl(weblink);
    setContentView(mWebview);
} 
else 
{
    progressBar = ProgressDialog.show(this, "Please Wait", "loading offline..");
    mWebview.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ONLY);

    mWebview.loadUrl(weblink);
    setContentView(mWebview);
}

Hi, did you manage to resolve this issue? I have the exact same problem. Could you share the solution if you have one. Thanks Matt. Here's my duplicate problem http://stackoverflow.com/questions/14549638/webview-not-displaying-website-when-offline — turtleboy, Jan 28 '13 at 14:25

score 1 · Answer 1 · answered Jul 14 '12 at 11:15

1

Your code is ok.

Either the Website does not exist or didn't get cached correctly, or your forgot to add the following permissions :

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permisson.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.INTERNET"/>

answered Jul 14 '12 at 11:15

Zakaria

14,892
22
84
125

Did you enable caching for your webview ? http://alex.tapmania.org/2010/11/html5-cache-android-webview.html – Zakaria Jul 14 '12 at 11:18
website is running correctly too and i see that in simulator's application setting 2.5 mb data is cached but not loading in webview ?? Please help me !! – sudhakar singh Jul 14 '12 at 11:19
yeah mWebview = new WebView(this); mWebview.getSettings().setJavaScriptEnabled(true); mWebview.getSettings().setDomStorageEnabled(true); mWebview.getSettings().setAppCachePath("/data/data/com.tmi.app/cache"); mWebview.getSettings().setAllowFileAccess(true); mWebview.getSettings().setAppCacheEnabled(true); mWebview.getSettings().setLoadsImagesAutomatically(true); – sudhakar singh Jul 14 '12 at 11:20
Can you restart the whole process ? remove the app with its cache from the simulator, run it again online and then, switch to the airplane mode. For me, everything you've done is correct. – Zakaria Jul 14 '12 at 11:22
Ok let me try !! Thanks for quick reply :) – sudhakar singh Jul 14 '12 at 11:25
It stops with message "the requested file was not found" – sudhakar singh Jul 14 '12 at 11:27
What if you replaced `WebSettings.LOAD_CACHE_ONLY` with `WebSettings.LOAD_CACHE_ELSE_NETWORK` – Zakaria Jul 14 '12 at 11:31
It says requested url not found – sudhakar singh Jul 14 '12 at 11:39
Thanks a lot Zakaria but no hopes still :( – sudhakar singh Jul 14 '12 at 11:41
It could be worth using this ARO tool to understand what the phone is doing on the network side. This could help you to understand what is happening and what data is being fetched http://developer.att.com/developer/legalAgreementPage.jsp?passedItemId=9700312 – Rod Burns Jul 16 '12 at 10:31
Thanks Rod Burns .. just checking it :) – sudhakar singh Jul 16 '12 at 11:23
I think no advantage to have a ARO for this :( – sudhakar singh Jul 16 '12 at 11:30
Are you using Android with another framework (ex: PhoneGap, Appcelerator, etc.) ? – Zakaria Jul 16 '12 at 12:28
@Zakaria : no just eclipse with latest android sdk – sudhakar singh Jul 18 '12 at 04:51

score 0 · Answer 2 · answered Jun 16 '14 at 11:07

0

Just Remove

setContentView(mWebview);

in 
if and else both parts

answered Jun 16 '14 at 11:07

Rashid Ali

561
6
14

Webview not loading offline cached data

2 Answers2

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