How do i use shared pref file for my app's log in page [closed]

Answer 1

You can use your apps shared preferences. The prefs can be accessed anytime using the key you set for these prefs.

static final String KEY_USERNAME = "username";
 static final String KEY_PASSWORD = "password";

 if (saveLogInDetail) { //save username and pw to prefs
      SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
      Editor ed = prefs.edit();
      ed.putString(KEY_USERNAME, theUsername);
      ed.putString(KEY_PASSWORD, thePW);
      ed.commit();
 }

To access the information or check the valid username and password use this:

SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 String storedUsername = prefs.getString(KEY_USERNAME, "Default Value if not found");
 String storedPassword = prefs.getString(KEY_PASSWORD, ""); //return nothing if no pass saved