ios - 单元格按钮的操作

Question

我正在使用表格 View ，其中我在一个单元格上添加了 2 个按钮。下面是我使用的代码

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
         cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
    }

    cell.backgroundView =[[UIImageView alloc] initWithImage:[ [UIImage imageNamed:@"list-bg.png"] stretchableImageWithLeftCapWidth:0.0 topCapHeight:5.0] ];
    tickbtn = [UIButton buttonWithType:UIButtonTypeCustom];
    tickbtn.tag = 200+indexPath.row;
    [tickbtn setBackgroundImage:[UIImage imageNamed:@"ok_gray.png"]forState:UIControlStateNormal];
    [tickbtn addTarget:self action:@selector(addshed:) forControlEvents:UIControlEventTouchUpInside];
    tickbtn.frame = CGRectMake(220, 10, 30, 30);
    [cell.contentView addSubview:tickbtn];
    NSLog(@"tickbtn tag %ld",(long)tickbtn.tag);

    crossbtn = [UIButton buttonWithType:UIButtonTypeCustom];
    crossbtn.tag = 400+indexPath.row;
    [crossbtn setBackgroundImage:[UIImage imageNamed:@"delete-gray.png"]forState:UIControlStateNormal];
    [crossbtn addTarget:self action:@selector(removeshed:) forControlEvents:UIControlEventTouchUpInside];
    crossbtn.frame = CGRectMake(250, 10, 30, 30);
    [cell.contentView addSubview:crossbtn];
    NSLog(@"tickbtn tag %ld",(long)crossbtn.tag);

    return cell;
}

在tickbtn和crossbtn上我正在应用以下操作:-

-(IBAction)addshed:(UIControl *)sender
{
      NSIndexPath *indexPath = [NSIndexPath indexPathForRow:sender.tag-200 inSection:0];
    UITableViewCell *cell = (UITableViewCell*)[list_table cellForRowAtIndexPath:indexPath];
    UIButton *check1 = (UIButton*)[cell.contentView viewWithTag:indexPath.row+200];
    UIButton *check2 = (UIButton*)[cell.contentView viewWithTag:indexPath.row+400];
    UIImageView *btnimg1 = [[UIImageView alloc] initWithImage:check1.currentBackgroundImage];
    //UIImageView *btnimg2 = [[UIImageView alloc] initWithImage:check2.currentBackgroundImage];
    NSLog(@"SHED LIST subviews: %@", btnimg1.image);
    // Shed_data *sheddata  = [[Shed_data alloc] init];
    if (btnimg1.image == [UIImage imageNamed:@"ok_gray.png"]) {
        //btnimg.image = [UIImage imageNamed:@"ok_gray.png"];
        [check1 setBackgroundImage:[UIImage imageNamed:@"ok_green.png"]forState:UIControlStateNormal];
        [check2 setBackgroundImage:[UIImage imageNamed:@"delete-gray.png"]forState:UIControlStateNormal];
        [self addsheddata:sender];
        NSLog(@"tickbtn tag %ld",(long)tickbtn.tag);
    }
     else if (btnimg1.image == [UIImage imageNamed:@"ok_green.png"])
     {
        [check2 setBackgroundImage:[UIImage imageNamed:@"delete-red.png"]forState:UIControlStateNormal];
        [check1 setBackgroundImage:[UIImage imageNamed:@"ok_gray.png"]forState:UIControlStateNormal];
        [self removesheddata:sender];

}


}
-(IBAction)removeshed:(UIControl*)sender
{
  //.…………………….. My functionality
}

但在这两种情况下，只有当我按下单元格的按钮时，我才会获取最后一个单元格的标签值。请找到我的错误并帮助我解决它。您的帮助将非常感激。

Answer 1

试试这个对我来说效果很好。我刚刚用我的 Xcode 5 进行了测试。

修改:1. 我创建一个名为 _objects 的 NSMutableArray (_objects = [[NSMutableArray alloc]initWithObjects:@"one",@"two",@"thre", nil];)。并将其提供给我的 UITableView。

2.给 tickBtn 和 crossBtn 一个不同的颜色，这样很容易看到。

3.将按钮按下函数更改为 UIControl 为 UIButton 像 -(IBAction)addshed:(UIButton *)sender 和 when button按下我捕获标签值并将其打印在控制台上。

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];

    cell.textLabel.text = [_objects objectAtIndex:indexPath.row];

    cell.backgroundView =[[UIImageView alloc] initWithImage:[ [UIImage imageNamed:@"list-bg.png"] stretchableImageWithLeftCapWidth:0.0 topCapHeight:5.0] ];
    tickbtn = [UIButton buttonWithType:UIButtonTypeCustom];
    tickbtn.tag = 200+indexPath.row;
    [tickbtn setBackgroundImage:[UIImage imageNamed:@"ok_gray.png"]forState:UIControlStateNormal];
    [tickbtn setBackgroundColor:[UIColor blackColor]];
    [tickbtn addTarget:self action:@selector(addshed:) forControlEvents:UIControlEventTouchUpInside];
    tickbtn.frame = CGRectMake(220, 10, 30, 30);
    [cell.contentView addSubview:tickbtn];
    NSLog(@"tickbtn tag %ld",(long)tickbtn.tag);

    crossbtn = [UIButton buttonWithType:UIButtonTypeCustom];
    crossbtn.tag = 400+indexPath.row;
    [crossbtn setBackgroundImage:[UIImage imageNamed:@"delete-gray.png"]forState:UIControlStateNormal];
    [crossbtn addTarget:self action:@selector(removeshed:) forControlEvents:UIControlEventTouchUpInside];
    crossbtn.frame = CGRectMake(250, 10, 30, 30);
    [crossbtn setBackgroundColor:[UIColor greenColor]];

    [cell.contentView addSubview:crossbtn];
    NSLog(@"tickbtn tag %ld",(long)crossbtn.tag);

    return cell;
}

-(IBAction)addshed:(UIButton *)sender   {
    NSLog(@"add shed %d",sender.tag);
}

-(IBAction)removeshed:(UIButton *)sender   {
    NSLog(@"remove %d",sender.tag);
}

新问题更新

Did you try with 10 or more cells and try with some continuous scroll?

结果是

正如另一个答案所说

[cell addSubview:crossbtn];// -------- Change here ---------

就我所知，让我澄清一下。

contentView 是 UITableViewCell 的 subview 。 please review this reference在这里您可以看到 UITableViewCell 中实际上有 3 个 subview 。