Fill Username or Password on website through my android apps

[Android Question]

Hi, I am android developer. I am making an android application. This application is to store username and password. When we will enter any url then this application helps to retrieve password from database or open the url to android browser.


Please give me some favour of your opinion.. My problem is that when i open url , the password and username not retrieve from database, only url is open.


Please give me suggestion that how i get my username and password from database...fill up the username or password on website automatically...