uitableview单元格中的自定义删除按钮不起作用

问题描述：

我用过滤了预览包含Rezervacija对象的数组。我添加了自定义按钮“板”，并且当点击按钮时，我会询问警报视图以确认这一点，然后向服务器发送请求。当收到服务器的响应时，我需要从表中删除行，并从filteredReservations数组中删除对象。当我删除第一行没关系，但之后在filteredReservations而不是Rezervacija对象中，我得到了UIButton对象！我不知道如何:)uitableview单元格中的自定义删除按钮不起作用

代码：

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 
    return([filteredReservations count]); 
} 

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 

    static NSString *MyIdentifier = @"MyIdentifier"; 

    UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:MyIdentifier]; 

    if (cell == nil) { 
     cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:MyIdentifier] autorelease]; 
    } 
    Reservation *reservation = [filteredReservations objectAtIndex:indexPath.row]; 
    NSString *label = [[NSString alloc] initWithFormat:@"%@ (%d)", reservation.name, reservation.seatsNumber]; 
    cell.textLabel.text = label; 
    [label release]; 
    [reservation release]; 
    tableView.allowsSelection = FALSE; 
    UIButton *cellButton = [UIButton buttonWithType:UIButtonTypeRoundedRect]; 
    [cellButton setFrame:CGRectMake(430.0, 2.0, 106.0, 40.0)]; 
    [cellButton setTitle:@"Board" forState:UIControlStateNormal]; 
    [cellButton addTarget:self action:@selector(BoardPassengers:) forControlEvents:UIControlEventTouchUpInside]; 
    [cell addSubview:cellButton]; 
     cellButton.tag = indexPath.row; 

    return cell; 
} 


-(void)BoardPassengers:(id)sender{ 
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Question" message:@"Do you want to board passengers?" 
                delegate:self cancelButtonTitle:@"Odustani" otherButtonTitles:@"Da", nil]; 
    [alert show]; 
    [alert release]; 
    passengerForBoarding = [NSIndexPath indexPathForRow:((UIControl*)sender).tag inSection:1]; 
} 

- (void)alertView:(UIAlertView *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex 
{ 
    // the user clicked one of the OK/Cancel buttons 
    if (buttonIndex == 0) 
    { 
     NSLog(@"cancel"); 
    } 
    else 
    { 
     Reservation *reservationNew = [filteredReservations objectAtIndex:passengerForBoarding.row]; 
     NSString *reservationId = [[NSString alloc] initWithFormat:@"%d",reservationNew.reservationId]; 

     params = [NSDictionary dictionaryWithObjectsAndKeys: @"1", @"tour_id", @"1", @"bus_number",reservationId, @"reservation_id", nil]; 
     [[RKClient sharedClient] post:@"/service/boardingToBus.json" params:params delegate:self]; 
     [DSBezelActivityView newActivityViewForView:self.view withLabel:@"Boarding..."]; 
    } 
} 

- (void)request:(RKRequest*)request didLoadResponse:(RKResponse*)response { 

    if([[request resourcePath] isEqualToString:@"/service/boardingToBus.json"]){ 
     if([[response bodyAsString] isEqualToString:@"ERROR"]){ 
      [DSBezelActivityView removeViewAnimated:YES]; 
      UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"Error." 
                  delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; 
      [alert show]; 
      [alert release]; 
     }else{ 
      [DSBezelActivityView removeViewAnimated:YES]; 

      [filteredReservations removeObjectAtIndex:passengerForBoarding.row]; 
      [self.tableView reloadData]; 

      //[self.tableView beginUpdates]; 
      //[self.tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:passengerForBoarding] 
      //     withRowAnimation:UITableViewRowAnimationFade]; 
      // NSLog(@"%i", passengerForBoarding.row); 

      //[self.tableView endUpdates]; 

     } 
    } 

}

Rezervacija物体？ – Tieme

答

这听起来像你需要确保表视图是明确地意识到这一点，需要多少过滤保留显示。

// assuming only one section for your table view 
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 
    return([filteredReservations count]); 
}

对不起，我没有提到所有代码被剪断的方法。我已经有了相同的方法：| – dormitkon

您应该摆脱tableView的cellForRowAtIndexPath方法中的“[预订发布]”行。在这种情况下，保留被提取，而不是创建，因此不应该在此时释放。这*可能与您在表格视图中只看到按钮的事实有关，但不能保证。 :-) –

明天我会试试这个，当我得到物理设备:) – dormitkon

答

嘿，你可以得到 “预订ID” 的值，通过这一点。

-(void)BoardPassengers:(id)sender{ 
    Reservation *reservationNew = [filteredReservations objectAtIndex:[sender tag]]; 
    NSString *reservationId = [NSString StringWithFormat:@"%d",reservationNew.reservationId];}

或者你可以在任何你想要的地方使用这个值，就像你通过提示框提到的那样。

uitableview单元格中的自定义删除按钮不起作用

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