-(id)initWithDic:(NSDictionary *)dic { if (self = [super init]) { [self setValuesForKeysWithDictionary:dic]; } return self; } -(void)setValue:(id)value forUndefinedKey:(NSString *)key{ if ([key isEqualToString:@"new_app_picpath"]) { _mynew_app_picpath = value; } }
原文：http://www.cnblogs.com/WJJ-Dream/p/5809191.html