ios - NSInternalInconsistencyException uitableview

Question

我正在尝试从 UITableView 中删除行

-(void) closePickerViewRow:(id) sender {

    if(self.pickerIsShown && [self.forecastsData count] > 0){

      [self.tableView beginUpdates];
      NSMutableArray* tempArray = [self.forecastsData mutableCopy];
      NSIndexPath* indexPath = [NSIndexPath indexPathForRow:1 inSection:0];
      [self.tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
      [tempArray removeObjectAtIndex:1];
      self.forecastsData = [tempArray copy];
      [self.tableView endUpdates];

    }
}

但是我有一个错误

Terminating app due to uncaught exception 'NSInternalInconsistencyException', 
reason:'Invalid update: invalid number of rows in section 0. 
The number of rows  contained in an existing section after the update (11) 
must be equal to the number of rows contained in that section before the 
update(11),plus or minus the number of rows inserted or deleted from that 
section (0 inserted, 1 deleted) and plus or minus the number of rows moved into 
or out of that section (0 moved in, 0 moved out).'

我正在更新数据源 self.forecastData，它在删除行后有 10 个元素(开始时有 11 个)。所以，元素的数量是正确的。问题出在哪里？

Answer 1

在告诉 TableView 之前删除数据:

[tempArray removeObjectAtIndex:1];
self.forecastsData = [tempArray copy];
[self.tableView deleteRowsAtIndexPaths:@[indexPath]
                      withRowAnimation:UITableViewRowAnimationFade];