比如如下代码:
-(void)performSelector:(SEL)selector onNode:(CCNode *)node
withObject:(id)object recursive:(BOOL)isRecursive{
if ([node respondsToSelector:selector]) {
[node performSelector:selector withObject:object];
}
if (isRecursive) {
for (CCNode *child in node.children) {
[self performSelector:selector onNode:child withObject:object recursive:YES];
}
}
}
在其中
[node performSelector:selector withObject:object];
一句会出现may cause a leak的错误:
你可以安全的忽略该错误,只要node上执行的selector不会返回一个指针或id类型.