IOS - 桌面刪除行

Question

如何刪除UITableView部分的行？

當我運行下面的代碼就會死機：

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { 
    [tableView beginUpdates]; 
    if (editingStyle == UITableViewCellEditingStyleDelete) { 


     NSIndexPath *firstRow = [NSIndexPath indexPathForRow:0 inSection:0]; 
     //[self.productItems removeObjectAtIndex:indexPath.row]; 


     [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationRight]; 
    } 
    [tableView endUpdates]; 
} 

---

*** Assertion failure in -[UITableView _endCellAnimationsWithContext:], /SourceCache/UIKit_Sim/UIKit-1447.6.4/UITableView.m:976 
2013-01-19 14:46:14.847 [4752:207] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid update: invalid number of rows in section 2. The number of rows contained in an existing section after the update (1) must be equal to the number of rows contained in that section before the update (1), plus or minus the number of rows inserted or deleted from that section (0 inserted, 1 deleted).' 
*** Call stack at first throw: 
(
    0 CoreFoundation      0x0174abe9 __exceptionPreprocess + 185 
    1 libobjc.A.dylib      0x0189f5c2 objc_exception_throw + 47 
    2 CoreFoundation      0x01703628 +[NSException raise:format:arguments:] + 136 
    3 Foundation       0x0054c47b -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 116 
    4 UIKit        0x007cea0f -[UITableView(_UITableViewPrivate) _endCellAnimationsWithContext:] + 8424 
    5 UIKit        0x007be433 -[UITableView endUpdates] + 42 

    7 UIKit        0x007bb2ea -[UITableView(UITableViewInternal) animateDeletionOfRowWithCell:] + 101 
    8 UIKit        0x00751a6e -[UIApplication sendAction:to:from:forEvent:] + 119 
    9 UIKit        0x007e01b5 -[UIControl sendAction:to:forEvent:] + 67 
    10 UIKit        0x007e2647 -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 527 
    11 UIKit        0x007e11f4 -[UIControl touchesEnded:withEvent:] + 458 
    12 UIKit        0x007760d1 -[UIWindow _sendTouchesForEvent:] + 567 
    13 UIKit        0x0075737a -[UIApplication sendEvent:] + 447 
    14 UIKit        0x0075c732 _UIApplicationHandleEvent + 7576 
    15 GraphicsServices     0x01c83a36 PurpleEventCallback + 1550 
    16 CoreFoundation      0x0172c064 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 52 
    17 CoreFoundation      0x0168c6f7 __CFRunLoopDoSource1 + 215 
    18 CoreFoundation      0x01689983 __CFRunLoopRun + 979 
    19 CoreFoundation      0x01689240 CFRunLoopRunSpecific + 208 
    20 CoreFoundation      0x01689161 CFRunLoopRunInMode + 97 
    21 GraphicsServices     0x01c82268 GSEventRunModal + 217 
    22 GraphicsServices     0x01c8232d GSEventRun + 115 
    23 UIKit        0x0076042e UIApplicationMain + 1160 

    26 ???         0x00000001 0x0 + 1 
) 
terminate called after throwing an instance of 'NSException' 

Answer 1

試試這個代碼：

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { 
    [tableView beginUpdates];  
    if (editingStyle == UITableViewCellEditingStyleDelete) { 
    // Do whatever data deletion you need to do... 
    [self.productItems removeObjectAtIndex:indexPath.row]; 
    // Delete the row from the data source 
    [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObjects:indexPath, nil] withRowAnimation:UITableViewRowAnimationRight ];  
    }  
    [tableView endUpdates]; 
}