How to Clear Data of my app ?

[pluton]

Is it possible to make clear data in my app without manually going Settings -> Applications -> manage applications ->myapp -> Clear Data ??

Reason why I asking this is because I have facebook aplication and I want to user logout from app when it doesn't need it.
Facebook changed policy of logout so now it is not working facebook.com/logout.php

Can I just call some function example Clear cache or some cookies from my webview. I don't know :sign0013:

Does anyone has this problem also :BangHead:

 

[warwound]

Hi.

Do you want to clear the WebView cache only or are there other (temporary) files to clear?

This post shows how to clear just the WebView cache:

http://www.b4x.com/forum/basic4android-updates-questions/10382-clear-webview-cache.html

Martin.

 

[admac231]

When I asked about clearing the webview cache logging out of facebook was exactly what I was trying to do. Unfortunately clearing the cache doesn't always work so I ended up using a rather side-stepped method for logging out.

Use the JSInterface library to programmatically press the "Logout" button on Facebook.

I don't have the code to hand but I will post it when I do.

 

[warwound]

Maybe it's not just the WebView's cached files you need to clear but also any cookies?

The documentation for the native WebView clearCache method simply states:

clearCache(boolean includeDiskFiles)
Clear the resource cache.

It doesn't mention whether cookies are also cleared - i'd imagine a session cookie to be used by Facebook when you're logged in.
If that cookie isn't cleared the user would probably remain logged in.

Martin.

 

[pluton]

@admac231 - How did you manage in your Status Via app logout button ?

 

[admac231]

Okay, well as I said it's a bit hashy but it works

'Initialise the JSInterface
Dim jsi As JSInterface
jsi.addJSInterface(Webview1,"B4A")

'Load facebook.com/terms.php
WebView1.LoadUrl("http://www.facebook.com/terms.php")

'When the page has finished loading press the logout button
Sub WebView1_PageFinished (Url As String)
   If url.IndexOf("terms.php") >-1 Then
      ProgressDialogShow("Logging out...")
      jsi.execJS(WebView1,"document.forms['logout_form'].submit();")
   Else If url.IndexOf("refsrc=http%3A%2F%2Fwww.facebook.com%2Fterms.php&_rdr") >-1 Then 
      ProgressDialogHide
      Log("Logged Out")   
   End If
End Sub

 

[pluton]

Thanks

I will try with yours metod @admac231