ios内存错误 exc_bad_access

1. NSZombieEnabled

打开方式：

(1) Edit scheme -> Run -> Diagnostics -> Enable Zombie Objects

(2) Profile(Command+i) 打开instruments -> Zombies

2. 还有一招是在你怀疑的类加上下面的方法

-(BOOL) respondsToSelector:(SEL)aSelector {
    printf("SELECTOR: %s\n", [NSStringFromSelector(aSelector) UTF8String]);
    return [super respondsToSelector:aSelector];
}