-[__NSCFDictionary setObject:forKey:]: mutating method sent to immutable object' 解决方法:
http://qqy620.diandian.com/post/2012-10-15/40039809949 -[__NSCFDictionarysetObject:forKey:]:mutatingmethodsenttoimmutableobject'解决方法:错误:NSMutableDictionary*d=[[[NSUserDefaultsstandardUserDefaults]obje