In this post, I am going to discuss about how to authenticate Users in Android application using Java Web service.The application which I am gonna create will have two screens – Login screen and Home screen.
User has to type his/her credentials and click ‘Login’ button. Once ‘Login’ button is clicked, application fires call to Java web service along with Username and Password typed by User. Our Activity waits for response from the web service, once it receives response, it decides whether to take User to next screen(Home) or show ‘Login Failed’ message based on the response.
Here is the graphical representation of whatever we discussed: