import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;


public class MainActivity extends ActionBarActivity {
    public static SharedPreferences mySharedPreferences = null;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // REFERENCE TO THE SAVE BUTTON IN THE XML-FILE
        Button btSave = (Button)findViewById(R.id.btSave);
        // ACTION LISTENER FOR THE BUTTON
        btSave.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // READ TEXT FROM EDITTEXT-FIELD NUMBER 2 - FIRST GET A REFERENCE
                EditText etEditText2 = (EditText)findViewById(R.id.editText2);
                String insertedText = etEditText2.getText().toString();
                showToast(insertedText);

                // SAVE THE DATA TO SHARED PREFERENCES
                mySharedPreferences = getPreferences(Context.MODE_PRIVATE);
                SharedPreferences.Editor editor = mySharedPreferences.edit();
                editor.putString("values", insertedText);
                editor.commit();

            }
        });
        final Context thisContext = this;
        // GET REFERENCE TO THE SHOW DATA BUTTON
        Button btShowData = (Button)findViewById(R.id.btReadValues);
        // ADD ACTION HANDLER IN CASE BUTTON IS CLICKED
        btShowData.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(thisContext, MainActivity2Activity.class);
                startActivity(intent);
            }
        });

    }

    // METHOD TO SHOW A TOAST
    public void showToast(String message) {
        Toast msg = Toast.makeText(this, message, Toast.LENGTH_LONG);
        msg.show();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}