所以我创建的NSObject的子类,称为Query
如何使用NSObject子类?
@interface Query : NSObject
@property (nonatomic, assign) NSNumber *weight;
@property (nonatomic, assign) NSNumber *bodyFat;
@property (nonatomic, assign) NSNumber *activityLevel;
@end
这是正确的设置对象的属性?
在VC1:
BodyFatViewController *aViewController = [[BodyFatViewController alloc]init];
aViewController.query = self.query;
[self.navigationController pushViewController:aViewController animated:YES];
在VC2:
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component {
Query *anQuery = [[Query alloc]init];
anQuery.bodyFat = [self.bodyFatArray objectAtIndex:row];
anQuery.weight = self.query.weight;
self.query = anQuery;
}
我假设你的init方法编码根据模板,通过调用super.init和自我的分配,对不对? – dasblinkenlight 2012-04-07 23:16:08
我还没有为'Query'对象添加一个init方法。任何一个VC的'init'方法都不会执行超级调用的任何操作。 – Jon 2012-04-07 23:30:30
你应该那么好。 – dasblinkenlight 2012-04-07 23:32:03