AH Werkplanner code snippet

StartScreen.java

package owenselles.com.werkplanner;

import android.app.DatePickerDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;

import java.util.Calendar;

import owenselles.com.werkplanner.logics.SaveDetails;
import owenselles.com.werkplanner.logics.StorageManager;


public class StartScreen extends AppCompatActivity implements View.OnClickListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        SaveDetails details = StorageManager.getSaveDetails(getApplicationContext()); // load first time
        if (!details.darkTheme) {
            setTheme(R.style.LightAppTheme_NoActionBar);
        }
        super.onCreate(savedInstanceState);
        setContentView(R.layout.start_screen);
        Button button = findViewById(R.id.continueButton);
        button.setOnClickListener(this);

    }

    @Override
    public void onClick(final View view) {
        final SaveDetails details = StorageManager.getSaveDetails(getApplicationContext());
        final Calendar calendar = DateAssist.create();
        DatePickerDialog dialog = new DatePickerDialog(view.getContext(), android.R.style.Theme_Holo, new DatePickerDialog.OnDateSetListener() {
            @Override
            public void onDateSet(DatePicker datePicker, int year, int month, int dayOfMonth) {

                calendar.set(Calendar.YEAR, year);
                calendar.set(Calendar.MONTH, month);
                calendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);
                details.birthDate = calendar;
                details.saveChanges(getApplicationContext());
                finish();
            }
        }, calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH));
        dialog.setTitle("Geboortedatum");
        dialog.setMessage("Vul uw geboortedatum in:");
        dialog.show();


    }

}