如何在 iphone 中插入表格单元界面生成器的 tableView 中选择特定复选框

Question

我正在对复选框做一个小概念。实际上，我将复选框图像放置在表格单元格中。但是我不明白，如何选择特定的复选框并获取表格视图中单元格的值，任何人都可以帮助我解决这个问题吗？我会提供带有编码的表格视图的屏幕截图，

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{
     NSLog(@"in table view cell for row at index");

     RequestSongSelectingCell *cell = (RequestSongSelectingCell *) [tableView dequeueReusableCellWithIdentifier:@"requestsingcell"];
    if (cell==nil) 
    {

        [[NSBundle mainBundle] loadNibNamed:@"RequestSongSelectingCell" owner:self options:nil];
        NSLog(@"start");
        cell=requestingCell;
        NSLog(@"end");
    }

    NSDictionary *dict=[self.array objectAtIndex:indexPath.row];

    NSString *artistname=[dict objectForKey:@"artist"];
    NSLog(@"artistname is %@",artistname);

    cell.artistName.text=artistname;

    NSString *songtitle=[dict objectForKey:@"title"];
    NSLog(@"songtitle is %@",songtitle);
    cell.artistTitle.text=songtitle;

    return cell;
 }

-(IBAction)checkButtonPressed:(id)sender
{
    NSLog(@"check box button pressed");

    requestingCell.checkBoxButton.imageView.image=[UIImage imageNamed:@"checkbox-checked.png"];

}

谢谢和问候，

girish

Answer 1

您是否在 RequestSongSelectingCell.xib 文件上添加按钮？

当你将它添加到tableView上时，你可以设置它的tag属性。然后您可以在buttonPressed方法中检索标签。

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{
    NSLog(@"in table view cell for row at index");

   RequestSongSelectingCell *cell = (RequestSongSelectingCell *) [tableView dequeueReusableCellWithIdentifier:@"requestsingcell"];
        if (cell==nil) 
    {

        [[NSBundle mainBundle] loadNibNamed:@"RequestSongSelectingCell" owner:self options:nil];
                NSLog(@"start");
        cell=requestingCell;
        NSLog(@"end");
    }
    cell.btn.tag = indexPath.row;
    // your customization
    return cell; 
}

-(IBAction)checkButtonPressed:(id)sender
{
    UIButton * btn = (UIButton*)sender;
    int selected_index = btn.tag;    // This is your index of selected cell

    NSLog(@"check box button pressed");

    requestingCell.checkBoxButton.imageView.image=[UIImage imageNamed:@"checkbox-checked.png"];

}

编辑：处理选择

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{
    NSLog(@"in table view cell for row at index");

   RequestSongSelectingCell *cell = (RequestSongSelectingCell *) [tableView dequeueReusableCellWithIdentifier:@"requestsingcell"];
        if (cell==nil) 
    {

        [[NSBundle mainBundle] loadNibNamed:@"RequestSongSelectingCell" owner:self options:nil];
                NSLog(@"start");
        cell=requestingCell;
        NSLog(@"end");
    }
//check if cell is already selected or not
        // if not selected, tag will be positive
        cell.btn.tag = indexPath.row;
        // if selected, tag will be negative
        cell.btn.tag = -indexPath.row;
        // your customization
        return cell; 
    }

-(IBAction)checkButtonPressed:(id)sender
{


    UIButton * btn = (UIButton*)sender;
    int selected_index = btn.tag;    // This is your index of selected cell


    //btn is the same btn image of which you need to change/toggle
    if(btn.tag > 0)     //its not selected
    {
            //set btn image as selected
            btn.tag = -(btn.tag);
            [btn setImage: forState:UIControlStateNormal];
    }
    else if(btn.tag < 0)     //its selected
    {
            //set btn image as unselected
            btn.tag = -(btn.tag);
            [btn setImage: forState:UIControlStateNormal];
    }
    NSLog(@"check box button pressed");

//        requestingCell.checkBoxButton.imageView.image=[UIImage imageNamed:@"checkbox-checked.png"];

    }