Main

package com.example.sebastian.lab2;

import android.content.Intent;
import android.content.SharedPreferences;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    public static final String PREFS_NAME = "shared_pref";

    SharedPreferences pref;
    SharedPreferences.Editor editor;

    private EditText titleInput;
    private EditText nameInput;
    private EditText textInput;
    private EditText phoneInput;
    private EditText priceInput;
    private Button nextView;
    private Button save;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        pref = getApplicationContext().getSharedPreferences(PREFS_NAME, MODE_PRIVATE);
        editor = pref.edit();

        titleInput = (EditText)findViewById(R.id.editTextTitle);
        nameInput = (EditText)findViewById(R.id.editTextName);
        textInput = (EditText)findViewById(R.id.editTextAd);
        phoneInput = (EditText)findViewById(R.id.editTextPhone);
        priceInput = (EditText)findViewById(R.id.editTextPrice);
        nextView = (Button)findViewById(R.id.buttonNext);
        save = (Button)findViewById(R.id.buttonSave);

        nextView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivity(new Intent(MainActivity.this, DisplayAdActivity.class));
            }
        });

        save.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                editor.putString("title", titleInput.getText().toString());
                editor.putString("name", nameInput.getText().toString());
                editor.putString("text", textInput.getText().toString());
                editor.putString("phone", phoneInput.getText().toString());
                editor.putString("price", priceInput.getText().toString());
                editor.commit();

            }
        });

    }
}