cocos2d for android - CCLayer astract class(CCLayer 추상 클레스)

public abstract class ActionManagerDemo extends CCLayer {

    CCTextureAtlas atlas;

    public ActionManagerDemo() {

        CGSize s = CCDirector.sharedDirector().winSize();

        // 가운데 텍스트

        CCLabel label = CCLabel.makeLabel(title(), "DroidSans", 32);

        addChild(label, 1);

        label.setPosition(CGPoint.make(s.width / 2, s.height / 2)); // 레이블이 표시될 위치

        // 상단 텍스트

        String subtitle = subtitle();

        if (subtitle != null) {

            CCLabel l = CCLabel.makeLabel(subtitle, "DroidSerif", 24);

            addChild(l, 1);

            l.setPosition(CGPoint.ccp(s.width / 2, s.height - 80));

        }

        // 하단 네비게이션 컨트롤

        CCMenuItemImage item1 = CCMenuItemImage.item("b1.png", "b2.png", this, "backCallback");

        CCMenuItemImage item2 = CCMenuItemImage.item("r1.png", "r2.png", this, "restartCallback");

        CCMenuItemImage item3 = CCMenuItemImage.item("f1.png", "f2.png", this, "nextCallback");

        // 메뉴 등록으로 하단 네비게이션 컨트롤 시작

        CCMenu menu = CCMenu.menu(item1, item2, item3);

        // 메뉴 위치 지정

        menu.setPosition(CGPoint.make(0, 0));

        // 아이템별 메뉴 위치 등록

        item1.setPosition(CGPoint.make(s.width / 2 - 100, 30));

        item2.setPosition(CGPoint.make(s.width / 2, 30));

        item3.setPosition(CGPoint.make(s.width / 2 + 100, 30));

        // 메뉴를 등록

        addChild(menu, 1);

    }

    /**

    * Comment : restart callback

    * @version : 1.0

    * @tags : @param sender

    * @date : 2011. 10. 18.

    */

    public void restartCallback(Object sender) {

        CCScene s = CCScene.node();

        s.addChild(coolsharp_cocos2d_test_Activity.restartAction());

        CCDirector.sharedDirector().replaceScene(s);

    }

    /**

    * Comment : next callback

    * @version : 1.0

    * @tags : @param sender

    * @date : 2011. 10. 18.

    */

    public void nextCallback(Object sender) {

        CCScene s = CCScene.node();

        s.addChild(coolsharp_cocos2d_test_Activity.nextAction());

        CCDirector.sharedDirector().replaceScene(s);

        Log.i("coolsharp", "next");

    }

    /**

    * Comment : back callback

    * @version : 1.0

    * @tags : @param sender

    * @date : 2011. 10. 18.

    */

    public void backCallback(Object sender) {

        CCScene s = CCScene.node();

        s.addChild(coolsharp_cocos2d_test_Activity.backAction());

        CCDirector.sharedDirector().replaceScene(s);

        Log.i("coolsharp", "back");

    }

    /**

    * Comment : title

    * @version : 1.0

    * @tags : @return

    * @date : 2011. 10. 18.

    */

    public String title() {

        return "No Title!";

    }

    /**

    * Comment : subtitle

    * @version : 1.0

    * @tags : @return

    * @date : 2011. 10. 18.

    */

    public String subtitle() {

        return null;

    }