Saving Checkbox states

Use the below code to store and retrive the data in SharedPreference. Your save each check box state in SharedPreference

//To get value from SharedPreference

SharedPreferences preferences = getApplicationContext().getSharedPreferences("PROJECT_NAME", android.content.Context.MODE_PRIVATE);
boolean value = preferences.getBoolean("KEY", false);
String value = preferences.getString("KEY");

//To Save value in SharedPreference

SharedPreferences preferences = getApplicationContext().getSharedPreferences("PROJECT_NAME", android.content.Context.MODE_PRIVATE);
SharedPreferences.Editor editor = preferences.edit();
editor.putString("KEY", value);
editor.putBoolean("KEY", value);
editor.commit();

look into it few minor changes::::

public class CheckBoxTest extends Activity implements OnCheckedChangeListener {

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            // TODO Auto-generated method stub
            super.onCreate(savedInstanceState);
            setContentView(R.layout.favorites_add_button);
            CheckBox cb1,cb2,cb3,cb4;

            cb1 = (CheckBox)findViewById(R.id.checkBox1);
            cb1.setChecked(getFromSP("cb1"));
            cb1.setOnCheckedChangeListener(this);
            cb2 = (CheckBox)findViewById(R.id.checkBox2);
            cb2.setChecked(getFromSP("cb2"));
            cb2.setOnCheckedChangeListener(this);
            cb3 = (CheckBox)findViewById(R.id.checkBox3);
            cb3.setChecked(getFromSP("cb3"));
            cb3.setOnCheckedChangeListener(this);
            cb4 = (CheckBox)findViewById(R.id.checkBox4);
            cb4.setChecked(getFromSP("cb4"));
            cb4.setOnCheckedChangeListener(this);

        }
        private boolean getFromSP(String key){
        SharedPreferences preferences = getApplicationContext().getSharedPreferences("PROJECT_NAME", android.content.Context.MODE_PRIVATE);
        return preferences.getBoolean(key, false);
        }
        private void saveInSp(String key,boolean value){
        SharedPreferences preferences = getApplicationContext().getSharedPreferences("PROJECT_NAME", android.content.Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = preferences.edit();
        editor.putBoolean(key, value);
        editor.commit();
        }
        @Override
        public void onCheckedChanged(CompoundButton buttonView,
                boolean isChecked) {
            // TODO Auto-generated method stub
            switch(buttonView.getId()){
            case R.id.checkBox1:
            saveInSp("cb1",isChecked);
            break;
            case R.id.checkBox2:
            saveInSp("cb2",isChecked);
            break;

            case R.id.checkBox3:
            saveInSp("cb3",isChecked);
            break;

            case R.id.checkBox4:
            saveInSp("cb4",isChecked);
            break;
            }

        }
        }