iphone - 吞下触摸，除非触摸我当前层的 child

Question

我正在使用 CCLayer 编写暂停菜单。我需要层来吞下触摸，这样你就不能按下下面的层，但是我还需要能够使用暂停层本身的按钮。

我可以让图层吞下触摸，但菜单也不起作用。

这是我的代码:

pauseLayer.m

#import "PauseLayer.h"

@implementation PauseLayer

@synthesize delegate;

+ (id) layerWithColor:(ccColor4B)color delegate:(id)_delegate
{
    return [[[self alloc] initWithColor:color delegate:_delegate] autorelease];
}

- (id) initWithColor:(ccColor4B)c delegate:(id)_delegate {
    self = [super initWithColor:c];
    if (self != nil) {

        NSLog(@"Init");
        self.isTouchEnabled = YES;
        CGSize wins = [[CCDirector sharedDirector] winSize];

         delegate = _delegate;
         [self pauseDelegate];

        CCSprite * background = [CCSprite spriteWithFile:@"pause_background.png"];

        [self addChild:background];

        CCMenuItemImage *resume = [CCMenuItemImage itemFromNormalImage:@"back_normal.png"
                                                         selectedImage:@"back_clicked.png"
                                                                target:self
                                                              selector:@selector(doResume:)];
        resume.tag = 10;
        CCMenu * menu = [CCMenu menuWithItems:resume,nil];

        [menu setPosition:ccp(0,0)];

        [resume setPosition:ccp([background boundingBox].size.width/2,[background boundingBox].size.height/2)];

        [background addChild:menu];

        [background setPosition:ccp(wins.width/2,wins.height/2)];

    }
    return self;
}

-(void)pauseDelegate
{
    NSLog(@"pause delegate");
    if([delegate respondsToSelector:@selector(pauseLayerDidPause)])
        [delegate pauseLayerDidPause];
}

-(void)doResume: (id)sender
{
    if([delegate respondsToSelector:@selector(pauseLayerDidUnpause)])
        [delegate pauseLayerDidUnpause];
    [self.parent removeChild:self cleanup:YES];
}

- (void)onEnter {
    [[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:INT_MIN+1 swallowsTouches:YES];
    [super onEnter];
}

- (void)onExit {
    [[CCTouchDispatcher sharedDispatcher] removeDelegate:self];
    [super onExit];
}
- (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event {
    return YES;
}

-(void)dealloc
{
    [super dealloc];
}

@end

Answer 1

为什么不直接禁用游戏层上的触摸？就像在 onEnter 方法中禁用游戏层上的触摸......和 ​​onExit 重新启用它们

有点像

-onEnter{
gameLayer.isTouchEnabled=NO;
....
}
-onExit{
gameLater.isTouchEnabled=YES;
...
}

你也不需要 CCTouchDispatcher