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

Answer 1

you should use SQlite Database instead of using share preference. Once you set up database then insert user credentials to database if user is a not register. And in your case check if current user is in database if exits authenticate him other wise you can force him to register to application. You can see sqlite in detail here http://developer.android.com/reference/android/database/sqlite/SQLiteDatabase.html

Answer 2

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

Answer 3

Store your login data in sharedpreferences: String username="dipali"; String pass="1111";

SharedPreferences.Editor editor = viewLoginScreen
                                                .getSharedPreferences(
                                                        "prefernce",
                                                        Context.MODE_PRIVATE).edit();
                                        editor.putString(
                                                "username",
                                                user);
                                        editor.commit();


SharedPreferences.Editor editor = viewLoginScreen
                                            .getSharedPreferences(
                                                    "prefernce",
                                                    Context.MODE_PRIVATE).edit();
                                    editor.putString(
                                            "pass",
                                            pass);
                                    editor.commit();

get shared prefences data:

SharedPreferences shar = viewLoginScreen
                                        .getSharedPreferences(
                                                "prefernce",
                                                Context.MODE_PRIVATE);
String username=shar.getString("username","");
String pass=shar.getString("pass","");