Question

我正在开发IOS App。选择正确创建的didSelectRowAtIndexPath时创建Label和Button。但当我点击按钮删除标签和按钮删除完美。但问题是标签在删除标签和按钮后没有向上移动。并在删除标签后更改标签的索引值。请提前帮助谢谢。

Code..  

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    y =  y + 40;
    count++;

    UITableViewCell *selectedCell = [self.tableview cellForRowAtIndexPath:indexPath];
    NSLog(@"%@",selectedCell);

    NSString *str = [array objectAtIndex:indexPath.row];

    _label = [[UILabel alloc]initWithFrame:CGRectMake(x,y, 200.0f, 30.0f)];
    [_label.layer setBorderColor: [[UIColor blackColor] CGColor]];
    [_label.layer setBorderWidth: 1.0];
    _label.text = str;
    _label.tag = indexPath.row;
    [self.view addSubview:_label];

    _button =[[UIButton alloc]initWithFrame:CGRectMake(220.0f,y, 30.0f, 30.0f)];
    [_button.layer setBorderColor: [[UIColor blackColor] CGColor]];
    [_button.layer setBorderWidth: 1.0];
    [_button setTag:indexPath.row];
    [_button addTarget:self action:@selector(buttonTouchUpInside:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:_button];
}
- (IBAction)buttonTouchUpInside:(id)sender{

    y = y - 40;

    UIButton *button = (UIButton*)sender;
    NSInteger index = button.tag;

    [[sender viewWithTag:index] removeFromSuperview];

    _label = (UILabel *)[self.view viewWithTag:index];
    [_label removeFromSuperview];

    _label =[[UILabel alloc]initWithFrame:CGRectMake(x,y, 200.0f, 30.0f)];
    _label.tag = index;
    [self.view addSubview:_label];



    _label = (UILabel *)[self.view viewWithTag:index + 1];
    _label.frame = CGRectMake(x,y, 200.0f, 30.0f);
    _label.tag = index;
    [self.view addSubview:_label];

    _button = (UIButton *)[self.view viewWithTag:index+1];
    _button.frame = CGRectMake(220.0f,y, 30.0f, 30.0f);
    _button.tag = index;
    _button.backgroundColor =[UIColor blueColor];
    [self.view addSubview:_button];
}

Answer 1

我认为您需要在方法buttonTouchUpInside

中删除此代码

_label =[[UILabel alloc]initWithFrame:CGRectMake(x,y, 200.0f, 30.0f)];
 _label.tag = index;
 [self.view addSubview:_label];

因为您要在同一帧添加新标签

并以这种方式编写此方法

- (IBAction)buttonTouchUpInside:(id)sender{

    y = y - 40;

    UIButton *button = (UIButton*)sender;
    NSInteger index = button.tag;

    [[sender viewWithTag:index] removeFromSuperview];

    _label = (UILabel *)[self.view viewWithTag:index];
    [_label removeFromSuperview];



    _label = (UILabel *)[self.view viewWithTag:index + 1];
    _label.frame = CGRectMake(x,y, 200.0f, 30.0f);
    _label.tag = index;


    _button = (UIButton *)[self.view viewWithTag:index+1];
    _button.frame = CGRectMake(220.0f,y, 30.0f, 30.0f);
    _button.tag = index;
    _button.backgroundColor =[UIColor blueColor];

}

不需要这个陈述

[self.view addSubview:_label];

[self.view addSubview:_button];

在视图中添加后

删除按钮上的标签单击和其他标签上移

1 个答案: