SettingsActivity.java

// ---- SettingsActivity.java ----//
package com.atultiwari.medicalquiz;



import android.app.Activity;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RadioButton;

/**
 * @author robert.hinds
 *
 */
public class SettingsActivity extends Activity implements OnClickListener{


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.settings);

        /**
         * set listener on update button
         */
        Button updateBtn = (Button) findViewById(R.id.nextBtn);
        updateBtn.setOnClickListener(this);

        /**
         * Set selected button if saved
         */
        updateButtonWithPreferences();

    }


    /**
     * Method to update default check box
     */
    private void updateButtonWithPreferences() {
        RadioButton c1 = (RadioButton)findViewById(R.id.easySetting);
        RadioButton c2 = (RadioButton)findViewById(R.id.mediumSetting);
        RadioButton c3 = (RadioButton)findViewById(R.id.hardSetting);

        SharedPreferences settings = getSharedPreferences(Constants.SETTINGS, 0);
        int diff = settings.getInt(Constants.DIFFICULTY, Constants.MEDIUM);

        switch (diff)
        {
        case Constants.EASY :
            c1.toggle();
            break;

        case Constants.MEDIUM :
            c2.toggle();
            break;

        case Constants.EXTREME :
            c3.toggle();
            break;
        }
    }





    @Override
    public void onClick(View arg0) {
        /**
         * check which settings set and return to menu
         */
        if (!checkSelected())
        {
            return;
        }
        else
        {
            SharedPreferences settings = getSharedPreferences(Constants.SETTINGS, 0);
            Editor e = settings.edit();
            e.putInt(Constants.DIFFICULTY, getSelectedSetting());
            e.commit();
            finish();
        }

    }


    /**
     * Method to check that a checkbox is selected
     *
     * @return boolean
     */
    private boolean checkSelected() {
        RadioButton c1 = (RadioButton)findViewById(R.id.easySetting);
        RadioButton c2 = (RadioButton)findViewById(R.id.mediumSetting);
        RadioButton c3 = (RadioButton)findViewById(R.id.hardSetting);
        return (c1.isChecked() || c2.isChecked() || c3.isChecked());
    }


    /**
     * Get the selected setting
     */
    private int getSelectedSetting() {
        RadioButton c1 = (RadioButton)findViewById(R.id.easySetting);
        RadioButton c2 = (RadioButton)findViewById(R.id.mediumSetting);
        if (c1.isChecked())
        {
            return Constants.EASY;
        }
        if (c2.isChecked())
        {
            return Constants.MEDIUM;
        }

        return Constants.EXTREME;
    }

}