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CCTouchDispatcher中是这样分发触摸事件的:
然后如果调用这里的 setPriority,就会重新排序数组: rearrangeHandlers
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voidCCTouchDispatcher::setPriority(intnPriority,CCTouchDelegate*pDelegate)
CCAssert(pDelegate!=NULL,"");
CCTouchHandler*handler=NULL;
handler=this->findHandler(pDelegate);
CCAssert(handler!=NULL,153); background-color:inherit; font-weight:bold">if(handler->getPriority()!=nPriority)
handler->setPriority(nPriority);
this->rearrangeHandlers(m_pTargetedHandlers);
this->rearrangeHandlers(m_pStandardHandlers);
}
但是在业务层调用的 setPriority是这样的:
所以你会发现如果在初始化一个控件的时候调用 setPriority就会有效,而在运行中动态更改就无效,就是因为初始化后的下一帧调用(调用onEnter时,会注册touchdelegate)会根据当前priority将其注册进那个数组:
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voidCCTouchDispatcher::forceAddHandler(CCTouchHandler*pHandler,CCArray*pArray)
unsignedintu=0;
CCObject*pObj=NULL;
CCARRAY_FOREACH(pArray,pObj)
CCTouchHandler*h=(CCTouchHandler*)pObj;
if(h)
if(h->getPriority()<pHandler->getPriority())
++u;
if(h->getDelegate()==pHandler->getDelegate())
CCAssert(0,"");
return;
pArray->insertObject(pHandler,u);
}
所以,改变触摸分发数组的机会只有一次,之后如果想动态的改变优先级需要获取TouchDispatcher后设置,或者类似menu可以调用现成的函数setHandlerPriority
解决:
//设置层级 CCTouchDispatcher* pDispatcher = CCDirector::sharedDirector()->getTouchDispatcher(); pDispatcher->removeDelegate(m_pCtiyGateBtn); pDispatcher->addTargetedDelegate(m_pCtiyGateBtn,1000,true);