StudentParcelerActivity.java

package com.example.activitystarter.parceler;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Switch;

import com.example.activitystarter.BaseActivity;
import com.example.activitystarter.R;

import activitystarter.Arg;
import activitystarter.MakeActivityStarter;
import butterknife.BindView;
import butterknife.ButterKnife;

@MakeActivityStarter
public class StudentParcelerActivity extends BaseActivity {

    @Arg(parceler = true) StudentParceler student;

    @BindView(R.id.student_name) EditText studentNameView;
    @BindView(R.id.student_id) EditText studentIdView;
    @BindView(R.id.student_grade) EditText studentGradeView;
    @BindView(R.id.student_is_passing) Switch studentIsPassingView;
    @BindView(R.id.save_button) Button saveButton;
    @BindView(R.id.restore_button) Button restoreButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_data);
        ButterKnife.bind(this);

        fill();

        saveButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String name = studentNameView.getText().toString();
                int id = Integer.parseInt(studentIdView.getText().toString());
                char grade = studentGradeView.getText().charAt(0);
                student = new StudentParceler(id, name, grade);
            }
        });
        restoreButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                fill();
            }
        });
    }

    private void fill() {
        studentNameView.setText(student.getName());
        studentIdView.setText(""+student.getId());
        studentGradeView.setText(""+student.getGrade());
        studentIsPassingView.setVisibility(View.GONE);
    }
}