我已经阅读了很多帖子，但无法找到答案。 我在我的项目MGSwipeTableCell中添加了https://github.com/MortimerGoro/MGSwipeTableCell。
我添加了.h文件：#import "MGSwipeTableCell.h"和"MGSwipeButton.h"。
还补充说：
@interface BuyItemListViewController : UIViewController <NSFetchedResultsControllerDelegate, MGSwipeTableCellDelegate, UITableViewDelegate, UITableViewDataSource, UIActionSheetDelegate>
在storyboard中，我将MGSwipeTableCell类设置为我的单元格。正如在这个自定义控件的帮助下所写。
所以，当我尝试使用我的自定义按钮删除行时，获取该deleteRowsAtIndexPaths会导致SIGABRT：
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
id<NSFetchedResultsSectionInfo> sectionInfo = [[self.fetchedResultsController sections]objectAtIndex:section];
return [sectionInfo numberOfObjects];
//return self.fetchedResultsController.fetchedObjects.count;
}
-(BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath{
return YES;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *cellIdentifier = @"itemCell";
MGSwipeTableCell *cell = [self.itemTableView dequeueReusableCellWithIdentifier:cellIdentifier];
cell.leftSwipeSettings.transition = MGSwipeTransitionBorder;
cell.rightSwipeSettings.transition = MGSwipeTransitionBorder;
cell.leftButtons = [self createLeftButtons:1];
cell.rightButtons = [self createRightButtons:1];
cell.delegate = self;
BuyItemEntity *item = [self.fetchedResultsController objectAtIndexPath:indexPath];
[self applyCellValues:cell :item];
return cell;
}
错误在此代码中：
-(BOOL) swipeTableCell:(MGSwipeTableCell*) cell tappedButtonAtIndex:(NSInteger) index direction:(MGSwipeDirection)direction fromExpansion:(BOOL) fromExpansion
{
NSLog(@"Delegate: button tapped, %@ position, index %d, from Expansion: %@",
direction == MGSwipeDirectionLeftToRight ? @"left" : @"right", (int)index, fromExpansion ? @"YES" : @"NO");
if (direction == MGSwipeDirectionRightToLeft && index == 0) {
//delete button
NSIndexPath * path = [_itemTableView indexPathForCell:cell];
NSLog(@"indexpath swipe: %i", path.row);
NSManagedObjectContext *context = [self managedObjectContext];
BuyItemEntity *itemToDelete = [self.fetchedResultsController objectAtIndexPath:path];
[context deleteObject:itemToDelete];
NSError *error = nil;
if(![context save:&error]){NSLog(@"Eror TableView deleting! %@", error);} //---the object delete correctly
[_itemTableView deleteRowsAtIndexPaths:@[path] withRowAnimation:UITableViewRowAnimationLeft]; // here is SIGABRT
NSLog(@"Delete button pressed");
}
但是在这个类的Demo应用程序中没有问题，来自Demo的代码：
-(BOOL) swipeTableCell:(MGSwipeTableCell*) cell tappedButtonAtIndex:(NSInteger) index direction:(MGSwipeDirection)direction fromExpansion:(BOOL) fromExpansion
{
NSLog(@"Delegate: button tapped, %@ position, index %d, from Expansion: %@",
direction == MGSwipeDirectionLeftToRight ? @"left" : @"right", (int)index, fromExpansion ? @"YES" : @"NO");
if (direction == MGSwipeDirectionRightToLeft && index == 0) {
//delete button
NSIndexPath * path = [_tableView indexPathForCell:cell];
[tests removeObjectAtIndex:path.row];
[_tableView deleteRowsAtIndexPaths:@[path] withRowAnimation:UITableViewRowAnimationLeft];
NSLog(@"Delete button pressed");
}
return YES;
}
我在调试选项中启用了Zombie Object以获取更多信息。
http://s020.radikal.ru/i700/1410/3d/f63fbedbcff7.png
Convenience callback received (right).
2014-10-27 12:11:22.576 NotesApp_1[4885:247508] Delegate: button tapped, right position, index 0, from Expansion: NO
2014-10-27 12:11:22.576 NotesApp_1[4885:247508] indexpath swipe: 2
2014-10-27 12:11:22.580 NotesApp_1[4885:247508] *** Assertion failure in -[UITableView _endCellAnimationsWithContext:], /SourceCache/UIKit_Sim/UIKit-3318.16.14/UITableView.m:1314
2014-10-27 12:11:22.585 NotesApp_1[4885:247508] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'attempt to delete row 2 from section 0 which only contains 2 rows before the update'
*** First throw call stack:
(
0 CoreFoundation 0x0206d946 __exceptionPreprocess + 182
1 libobjc.A.dylib 0x01cf6a97 objc_exception_throw + 44
2 CoreFoundation 0x0206d7da +[NSException raise:format:arguments:] + 138
3 Foundation 0x0196a810 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 118
4 UIKit 0x007c3f56 -[UITableView _endCellAnimationsWithContext:] + 4313
5 UIKit 0x007dc421 -[UITableView _updateRowsAtIndexPaths:updateAction:withRowAnimation:] + 337
6 UIKit 0x007dc49f -[UITableView deleteRowsAtIndexPaths:withRowAnimation:] + 56
7 NotesApp_1 0x000587dd -[BuyItemListViewController swipeTableCell:tappedButtonAtIndex:direction:fromExpansion:] + 749
8 NotesApp_1 0x0005f815 -[MGSwipeButtonsView handleClick:fromExpansion:] + 789
9 NotesApp_1 0x0005f9bc -[MGSwipeButtonsView buttonClicked:] + 108
10 libobjc.A.dylib 0x01d0c7cd -[NSObject performSelector:withObject:withObject:] + 84
11 UIKit 0x006cf23d -[UIApplication sendAction:to:from:forEvent:] + 99
12 UIKit 0x006cf1cf -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 64
13 UIKit 0x00802e86 -[UIControl sendAction:to:forEvent:] + 69
14 UIKit 0x008032a3 -[UIControl _sendActionsForEvents:withEvent:] + 598
15 UIKit 0x0080250d -[UIControl touchesEnded:withEvent:] + 660
16 UIKit 0x0071f60a -[UIWindow _sendTouchesForEvent:] + 874
17 UIKit 0x007200e5 -[UIWindow sendEvent:] + 791
18 UIKit 0x006e5549 -[UIApplication sendEvent:] + 242
19 UIKit 0x006f537e _UIApplicationHandleEventFromQueueEvent + 20690
20 UIKit 0x006c9b19 _UIApplicationHandleEventQueue + 2206
21 CoreFoundation 0x01f911df __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15
22 CoreFoundation 0x01f86ced __CFRunLoopDoSources0 + 253
23 CoreFoundation 0x01f86248 __CFRunLoopRun + 952
24 CoreFoundation 0x01f85bcb CFRunLoopRunSpecific + 443
25 CoreFoundation 0x01f859fb CFRunLoopRunInMode + 123
26 GraphicsServices 0x0501424f GSEventRunModal + 192
27 GraphicsServices 0x0501408c GSEventRun + 104
28 UIKit 0x006cd8b6 UIApplicationMain + 1526
29 NotesApp_1 0x0006af2d main + 141
30 libdyld.dylib 0x02883ac9 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
在那段时间我的旧方法正常工作，而不使用自定义单元格类：
-(void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath{
if (editingStyle == UITableViewCellEditingStyleDelete) {
// Delete the row from the data source
//[tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
NSManagedObjectContext *context = [self managedObjectContext];
BuyItemEntity *itemToDelete = [self.fetchedResultsController objectAtIndexPath:indexPath];
[context deleteObject:itemToDelete];
NSError *error = nil;
if(![context save:&error]){
NSLog(@"Eror TableView deleting! %@", error);
}
}
}
答案 0 :(得分：0)
你不在bounds。第一行的索引为0，因此2行以索引0开头，以索引1结束。