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import org.cocos2d.events.CCTouchDispatcher;
import org.cocos2d.layers.CCColorLayer;
import org.cocos2d.layers.CCLayer;
import org.cocos2d.layers.CCScene;
import org.cocos2d.menus.CCMenu;
import org.cocos2d.menus.CCMenuItem;
import org.cocos2d.menus.CCMenuItemImage;
import org.cocos2d.nodes.CCDirector;
import org.cocos2d.types.ccColor4B;
import android.view.MotionEvent;

public class MenuLayer extends CCColorLayer {


public static CCScene scene() {
    // Create the scene
    CCScene scene = CCScene.node();
    // Create a background layer.
    CCLayer background = new MenuLayer(ccColor4B.ccc4(255, 255, 255, 255));
    scene.addChild(background);
    return scene;
}

protected MenuLayer(ccColor4B colour) {
    super(colour);

    // Create a menu items.
    CCMenuItem start = CCMenuItemImage.item("Start.png", "Start.png",
             this, "startTouched"); 
    CCMenuItem options = CCMenuItemImage.item("Options.png",
            "Options.png", this, "optionsTouched");
    CCMenuItem help = CCMenuItemImage.item("Help.png", "Help.png", this,
            "helpTouched");
    // Create array of CCMenuItem object to add to CCMenu
    CCMenuItem[] items = { start, options, help };
    // Add menu items to menu
    CCMenu menu = CCMenu.menu(items);
    // Align items with 150px adding
    menu.alignItemsVertically(150);
    // Add menu to the scene
    addChild(menu);
    CCTouchDispatcher.sharedDispatcher().addTargetedDelegate(this, 0, true);
    this.setIsTouchEnabled(true);
}

@Override
public boolean ccTouchesBegan(MotionEvent event) {
    return true;
}

@Override
public boolean ccTouchesEnded(MotionEvent event) {
    return super.ccTouchesEnded(event);
}

/**This method is called when the start menu item is touched**/
public void startTouched() {
    CCScene scene = GameLayer.scene();
    CCDirector.sharedDirector().pushScene(scene);
}

/**This method is called when the options menu item is touched**/
public void optionsTouched() {
    CCScene scene = OptionsLayer.scene();
    CCDirector.sharedDirector().replaceScene(scene);
}

/**This method is called when the help menu item is touched**/
public void helpTouched() {
    CCScene scene = HelpLayer.scene();
    CCDirector.sharedDirector().replaceScene(scene);
}
}

我开始使用 cocos2d-android 并且在获取菜单以响应触摸事件时遇到了麻烦。

场景加载并运行正常，只是不会响应触摸事件。如果我在 ccTouchesEnded 中设置断点，我可以拦截事件，但 startTouched、optionsTouched 和 helpTouched 永远不会被调用。据我所知，CCMenu 应该内置此功能。

cocos2d-android 是从 cocos2d-iphone 移植过来的。

谁能指出我正确的方向？

更新：

07-21 13:31:17.933: WARN/System.err(6660): java.lang.NoSuchMethodException: startTouched
07-21 13:31:17.933: WARN/System.err(6660): at
java.lang.ClassCache.findMethodByName(ClassCache.java:247)
07-21 13:31:17.933: WARN/System.err(6660): at
java.lang.Class.getMethod(Class.java:962)
07-21 13:31:17.933: WARN/System.err(6660): at org.cocos2d.menus.CCMenuItem.<init>
(CCMenuItem.java:54)
...
// The errors repeat for optionsTouched and helpTouched

看起来它没有将选择器参数解析为正确的方法。任何人都可以看到 startTouched 或其他人有什么问题吗？

4

1 回答 1

4

我通过向回调方法添加参数来修复它。

例子：

public void startTouched(Object sender) {
    CCScene scene = GameLayer.scene();
    CCDirector.sharedDirector().pushScene(scene);
}

我还没有弄清楚为什么需要这样做，但它确实有效。

于 2011-07-22T16:20:51.260 回答