Agfdhyk

I'm trying to get data (Name , Email , Password) from user and then save them using SharedPreferences . In second Activity I want to retrieve the data (only Email and Password) and then set them in editText. Here is my code. My data is not showing and I don't know where the problem is.

My code :-

First Activity

EditText username  , userpassword , useremail ;



SharedPreferences sharedPreferences ;





static final String Email = "Email";

static final String Username = "Username";

static final String Password = "Password";



  public void RegisterrButton(View view){



    username = findViewById(R.id.username_editText);

    userpassword = findViewById(R.id.pasword_editText);

    useremail = findViewById(R.id.email_editText);



    String name = username.getText().toString();

    String password = userpassword.getText().toString();

    String email  = useremail.getText().toString();



    SharedPreferences.Editor editor = sharedPreferences.edit();



    editor.putString(Username , name);

    editor.putString(Password , password);

    editor.putString(Email,email);

    editor.commit();





    Intent intent = new Intent(signup.this,MainActivity.class);

    startActivity(intent);





}

Second Activity

SharedPreferences sharedPreferences ;

static final String prefrence = "prefrence";



static final String Email = "Email";

static final String Password = "Password";



EditText useremail  , userpassword ;



 public void EnterButton(View view){



        useremail = findViewById(R.id.useremail_editText);

        userpassword = findViewById(R.id.pasword_editText);





        sharedPreferences = getSharedPreferences(prefrence , Context.MODE_PRIVATE) ;



        if(sharedPreferences.contains(Email) ){



            useremail.setText(sharedPreferences.getString(Email , ""));}





        if(sharedPreferences.contains(Password)){



            userpassword.setText(sharedPreferences.getString(Password , ""));



        }



 } 

Replace the following code in MainActivity:

SharedPreferences.Editor editor = sharedPreferences.edit();

With

public static final String MY_PREFS_NAME = "prefrence";

SharedPreferences.Editor editor = getSharedPreferences(MY_PREFS_NAME, MODE_PRIVATE).edit();

Use the same MY_PREFS_NAME variable to get the info in your second activity:

SharedPreferences prefs = getSharedPreferences(MY_PREFS_NAME, MODE_PRIVATE); 

Make sure are you are using same shared preference name at the time of persisting and reading the values.

    SharedPreferences preference = context.getSharedPreferences(<SAME_PREFERENCE_NAME>,Context.MODE_PRIVATE);

Create your Function and try this:

   public void saveText(String key, String value) {

        SharedPreferences sPref = context.getSharedPreferences(config.PREFERENCES, context.MODE_PRIVATE);

        SharedPreferences.Editor ed = sPref.edit();

        ed.putString(key, value);

        ed.commit();

        ed.apply();

        toast("Yatda saklandy");

    }



    public String loadText(String key) {

        SharedPreferences sPref = context.getSharedPreferences(config.PREFERENCES, context.MODE_PRIVATE);

        String savedText = sPref.getString(key, "");

        return savedText;

    }

and use it:

saveText("name",username.getText().toString());



loadText("name");

In your first activity you are not initialising sharedPreference
To initialise do this

sharedPreferences = getSharedPreferences(prefrence , Context.MODE_PRIVATE);

Consider using apply().

It writes the changes to the RAM immediately and waits and writes it to the internal storage(the actual preference file) after. Commit writes the changes synchronously and directly to the file.