在我的顶层中,我有一个“后退按钮”精灵,它应该接收触摸。通常所有其他触摸都应该传递到较低层,但如果这个后退按钮接收到轻击手势,那么它应该吞下触摸。
目前,对“后退”按钮的任何触摸也会作为对下方图层的触摸而被接收。
顶层:
-(id) init {
if ((self = [super init])) {
[self scheduleUpdate];
// Initialize KKInput
KKInput* input = [KKInput sharedInput];
input.gestureTapEnabled = input.gesturesAvailable;
...
}
return self;
}
...
-(void) update:(ccTime)delta
{
KKInput* input = [KKInput sharedInput];
if (input.gestureTapRecognizedThisFrame) {
CCLOG(@"Top layer tap recognized");
if ([self.backButton containsPoint:input.gestureTapLocation]) {
CCLOG(@"Top layer Back Button tap recognized");
}
}
}
下层
-(id) init {
if ((self = [super init])) {
[self scheduleUpdate];
// Initialize KKInput
KKInput* input = [KKInput sharedInput];
input.gestureTapEnabled = input.gesturesAvailable;
...
}
return self;
}
...
-(void) update:(ccTime)delta
{
KKInput* input = [KKInput sharedInput];
if (input.gestureTapRecognizedThisFrame) {
CCLOG(@"Lower layer tap recognized");
}
}
如果我点击后退按钮以外的其他地方,输出就是我想要的:
2012-10-16 10:58:03.747 MyApp[13838:707] Top layer tap recognized
2012-10-16 10:58:03.749 MyApp[13838:707] Lower layer tap recognized
但是如果我点击后退按钮,点击不会被按钮吞下:
2012-10-16 10:49:23.426 MyApp[13838:707] Top layer tap recognized
2012-10-16 10:49:23.429 MyApp[13838:707] Top layer Back Button tap recognized
2012-10-16 10:49:23.434 MyApp[13838:707] Lower layer tap recognized