我有一个包含CCMenuItemImage
的菜单(“myMenu”)。我希望这个菜单可以检测手指滑动并相应地滑动。
我的问题是CCMenuItemImage
似乎吸收了触摸事件。当用户触摸CCMenuItemImages外部的菜单时,滑动可正常工作,但在触摸这些菜单时不会。
我试图将我的菜单项放在图层中以检测触摸(参考回答Scrollable menu using MenuItem's),但这似乎也不起作用。知道为什么吗?
+(id) scene
{
CCScene *scene = [CCScene node];
ModeMenuScene *layer = [ModeMenuScene node];
[scene addChild: layer];
return scene;
}
-(id) init
{
if( (self=[super init] )) {
CGSize winSize = [[CCDirector sharedDirector] winSize];
CCSprite *background = [CCSprite spriteWithFile:@"bg.png"];
background.position=ccp(winSize.width/2,winSize.height/2);
[self addChild:background];
mode1 = [CCMenuItemImage itemFromNormalImage:@"Mode1.png" selectedImage: @"Mode1.png" target:self selector:@selector(goToMode1:)];
mode1label = [CCLabelTTF labelWithString:[NSString stringWithFormat:@"Level 1 %d", n] dimensions:CGSizeMake(220,53) alignment:UITextAlignmentCenter fontName:@"Arial" fontSize:20.0];
mode1label.color = ccc3(167,0,0);
mode1label.position=ccp(55,-30);
[mode1 addChild:mode1label];
// here same kind of code to define mode2,mode3,mode4 (taken out to reduce size of code)
myMenu=[CCMenu menuWithItems:mode1,mode2,mode3,mode4,nil];
[myMenu alignItemsHorizontallyWithPadding:25];
myMenu.position=ccp(winSize.width/2+40,180);
menuLayer = [CCLayer node];
[menuLayer addChild:myMenu];
[self addChild:menuLayer];
[self enableTouch];
}
return self;
}
-(void) disableTouch{
self.isTouchEnabled=NO;
menuLayer.isTouchEnabled=NO;
}
-(void) enableTouch{
self.isTouchEnabled=YES;
menuLayer.isTouchEnabled=YES;
}
-(void) ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
UITouch *touch = [touches anyObject];
CGPoint location = [touch locationInView:[touch view]];
if(location.y>100 && location.y<260) {
draggingMenu=1;
x_initial = location.x;
}
else draggingMenu=0;
}
-(void) ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{
UITouch *touch = [touches anyObject];
CGPoint location = [touch locationInView:[touch view]];
if(draggingMenu==1) {
CGSize winSize = [[CCDirector sharedDirector] winSize];
int x = myMenu.position.x+location.x-x_initial;
x = MAX(0,x);
x = MIN(x,winSize.width/2+40);
myMenu.position=ccp(x,180);
x_initial=location.x;
}
}
- (void) ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
draggingMenu=0;
}
- (void)dealloc {
[super dealloc];
}
@end
答案 0 :(得分:3)
通过添加:
来解决它-(void) registerWithTouchDispatcher
{
[[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:INT_MIN+1 swallowsTouches:NO];
}
问题是CCMenuItemImage吞下了触摸,并将高优先级设置为-128。因此需要将优先级设置为INT_MIN+1