我看过其他关于无法识别的选择器错误的帖子，但没有关于以下方法中自动生成的代码：
- (void)tableView:(UITableView *)tableView commitEditingStyle:forRowAtIndexPath:
当我滑动删除时调用它，当我点击删除按钮时，我收到以下错误：
-[Vehicle removeObjectFromGasUpsAtIndex:]：无法识别的选择器发送到实例 0x8172c60
我的 NSManagedObject 类 Vehicle 有一个名为 gasUps 的 NSOrderedSet 变量，当我想删除它时，它应该响应这条消息。或者我是这么想的。
这是崩溃的整个方法：
- (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();
}
}
}
为什么这个选择器无法识别？
编辑：这是给乔迪的。
#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
这是设置 self.selectedVehicle 的代码片段：
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");
}