更改自定义单元格中按钮的图像

Posted 2023-03-16

【中文标题】更改自定义单元格中按钮的图像

【英文标题】：change image of button in custom cell

【发布时间】：2015-09-30 08:47:21

【问题描述】：

我想更改自定义单元格上按钮的图像，给定代码在双击时更改图像。我想在单击时更改图像（选中和取消选中）

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
    
        static NSString *simpleTableIdentifier = @"SimpleTableCell";

        SimpleTableCell *cell = (SimpleTableCell *)[tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
        if (cell == nil) 
        
            NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"SimpleTableCell" owner:self options:nil];
            cell = [nib objectAtIndex:0];
         
        NSString *localArrayData = [LocalArray objectAtIndex:indexPath.row];
        cell.nameLabel.text =localArrayData;
        cell.CheckButton.tag=indexPath.row;
        [cell.CheckButton setImage:[UIImage imageNamed:@"checkU.png"] forState:UIControlStateNormal];
        [cell.CheckButton addTarget:self action:@selector(CheckButtonAction:)forControlEvents:UIControlEventTouchUpInside];
        return cell;
    
- (void)CheckButtonAction:(id)sender
    
        NSInteger row = [sender tag];
        NSIndexPath *indexPath = [NSIndexPath indexPathForRow:row inSection:0];
        SimpleTableCell *cell = [DataTable cellForRowAtIndexPath:indexPath];
        if(appDelegate.didSelect)
        
            [cell.CheckButton setImage:[UIImage imageNamed:@"checkU.png"] forState:UIControlStateNormal];
            appDelegate.didSelect = FALSE;
        
        else
        
            [cell.CheckButton setImage:[UIImage imageNamed:@"checkS.png"] forState:UIControlStateNormal];
            appDelegate.didSelect = TRUE;
        
    

【问题讨论】：

考虑更详细地澄清问题。这将帮助 SO 用户帮助您。就目前而言，它包含一大段代码，没有 cmets 或解释

【参考方案1】：

你需要做这样的事情

-(void)selectUser:(id)sender

    UIButton *button=(UIButton *) sender;
    NSIndexPath *indexpath = [NSIndexPath indexPathForRow:button.tag inSection:0];
    CustomTableViewCell *tappedCell = (CustomTableViewCell *)[yourTableView cellForRowAtIndexPath:indexpath];
    if ([tappedCell.selectButton.imageView.image isEqual:[UIImage imageNamed:@"green.png"]])
    
        [tappedCell.selectButton setImage:[UIImage imageNamed:@"grey.png"] forState:UIControlStateNormal];
    
    else
    
        [tappedCell.selectButton setImage:[UIImage imageNamed:@"green.png"] forState:UIControlStateNormal];
    

在cellForRowAtIndexPath方法中，将单元格的indexPath设置为按钮标签

cell.selectButton.tag=indexPath.row;

并将选择器设置为按钮

[cell.selectButton addTarget:self action:@selector(selectUser:) forControlEvents:UIControlEventTouchUpInside];

【参考方案2】：

在 UIButton Action 里面写这个

UIButton *btn = (UIButton *)sender;
if (btn.tag==0)


    btn.tag = 1;
    [btn setImage:[UIImage imageNamed:@"uncheck.png"] forState:UIControlStateNormal];


else

    btn.tag=0;
    [btn setImage:[UIImage imageNamed:@"check.png"] forState:UIControlStateNormal];

【讨论】：

如何解决此错误 - 在“_strong id”类型的对象上找不到属性“标签”

还是有问题，第一个单元格双击换图，remeing单元格工作正常