retaining the state of webview across activities - android

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http://stackoverflow.com – I have two activities activity A and activity B, in activity B i am using webview to load the url, it goes well upto here, but when i switch back from Activity B to A and back to B webview doesn't show me the previous state of the page, it againg reloads the url, i have tried to restore the webview using onSaveInstanceState but in onCreate the savedInstanceState always returns null Can someone please post some pseudo/sample code? or atleast give me tips to overcome this probloem. Thanks in advance! (HowTos)