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我看到关于无法识别的选择错误以外的其他职位，但没有关于在下面的方法自动生成的代码：核心数据崩溃 - 无法识别的选择
- (void)tableView:(UITableView *)tableView commitEditingStyle:forRowAtIndexPath:
当我滑动删除这就是所谓的，并当我点击删除按钮，我得到以下错误：
-[Vehicle removeObjectFromGasUpsAtIndex:]: unrecognized selector sent to instance 0x8172c60
我的NSManagedObject类，汽车，有一个NSOrderedSet变量命名gasUps当我想删除它应该对这一消息作出回应。或者我想。
这里是它崩溃的整个方法：
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete) {
// need to delete gas up and not vehicle
int row = [indexPath row];
//[self.selectedVehicle removeObjectFromGasUpsAtIndex:row];
[self.selectedVehicle removeObjectFromGasUpsAtIndex:row];
NSError *error = nil;
if (![self.managedObjectContext save:&error]) {
// Replace this implementation with code to handle the error appropriately.
// abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
abort();
}
}
}
这是为什么选择无法识别？
编辑：这是乔迪。
#import <Foundation/Foundation.h>
#import <CoreData/CoreData.h>
typedef enum {
FullExtract,
NameExtract
} kTitleExtract;
@interface Vehicle : NSManagedObject
@property (nonatomic, retain) NSString * name;
@property (nonatomic, retain) NSNumber * year;
@property (nonatomic, retain) NSString * make;
@property (nonatomic, retain) NSNumber * mileage;
@property (nonatomic, retain) NSString * model;
@property (nonatomic, retain) NSOrderedSet *gasUps;
// added methods
- (NSString *)getTitleExtract:(kTitleExtract)titleExtract;
@end
@interface Vehicle (CoreDataGeneratedAccessors)
- (void)insertObject:(NSManagedObject *)value inGasUpsAtIndex:(NSUInteger)idx;
- (void)removeObjectFromGasUpsAtIndex:(NSUInteger)idx;
- (void)insertGasUps:(NSArray *)value atIndexes:(NSIndexSet *)indexes;
- (void)removeGasUpsAtIndexes:(NSIndexSet *)indexes;
- (void)replaceObjectInGasUpsAtIndex:(NSUInteger)idx withObject:(NSManagedObject *)value;
- (void)replaceGasUpsAtIndexes:(NSIndexSet *)indexes withGasUps:(NSArray *)values;
- (void)addGasUpsObject:(NSManagedObject *)value;
- (void)removeGasUpsObject:(NSManagedObject *)value;
- (void)addGasUps:(NSOrderedSet *)values;
- (void)removeGasUps:(NSOrderedSet *)values;
@end
这里是代码的片段，其中self.selectedVehicle设置：生成的访问有序一个一对多
if (self.vehiclesArray != nil && [self.vehiclesArray count] != 0 && self.vehicleIndex != -1) {
// enable add buttom
[self.navigationItem.rightBarButtonItem setEnabled:YES];
self.selectedVehicle = [self.vehiclesArray objectAtIndex:self.vehicleIndex];
NSLog(@"set selected vehicle");
} else {
// disable add button
[self.navigationItem.rightBarButtonItem setEnabled:NO];
// set vehicle defaults to -1 and make disable add buttom
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setInteger:-1 forKey:@"vehicleIndex"];
[defaults synchronize];
NSLog(@"set index to -1");
}
您基本上没有提供有用的信息。只是一个错误，和一行代码。基本上没有其他的背景。我们不介意读者。我们可以告诉你的所有内容与运行时相同：对象不识别选择器'removeObjectFromGasUpsAtIndex'。现在，如果你想显示定义'Vehicle'类型的代码，以及如何设置'self.selectedVehicle'，甚至可以在发送消息之前记录对象的日志，那么也许你可以得到一些帮帮我。 –
[NSOrderedSet生成的访问器中抛出的异常]的可能重复（http://stackoverflow.com/questions/7385439/exception-thrown-in-nsorderedset-generated-accessors） – jrturton