Question

我正在制作一个我以复选框形式使用的应用。我想显示我正在尝试的文本标签中的复选框计数，但找不到可能的解决方案..这是我的项目链接https://www.dropbox.com/s/iu8fdz4y0ps4xye/checkboxwithTableview%202.zip?dl=0请审核它.. 以下是我的示例代码

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

    static NSString *tableviewidentifier = @"cell";
    TablecellTableViewCell *cell= [self.tblvie dequeueReusableCellWithIdentifier:tableviewidentifier];

    if(cell==nil)
    {
        cell = [[TablecellTableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:tableviewidentifier];
    }

    cell.lblImage.layer.cornerRadius=3.0f;
    cell.lblImage.layer.borderWidth=1.0f;


    if ([self.checkimageArray containsObject:[self.lblArray objectAtIndex:indexPath.row]])
    {
        [cell.buttonCheckbox setImage:[UIImage imageNamed:@"checkBox.png"] forState:UIControlStateNormal];

       // [cell.buttonCheckbox setImage:[UIImage imageNamed:@"checkBoxMarked.png"] forState:UIControlStateNormal];

    }
    else
    {
        //[cell.buttonCheckbox setImage:[UIImage imageNamed:@"checkBox.png"] forState:UIControlStateNormal];
        [cell.buttonCheckbox setImage:[UIImage imageNamed:@"checkBoxMarked.png"] forState:UIControlStateNormal];
    }

    cell.buttonCheckbox.tag=indexPath.row;
    [cell.buttonCheckbox addTarget:self action:@selector(checkButton:) forControlEvents:UIControlEventTouchUpInside];


    cell.lblText.text=[self.lblArray objectAtIndex:indexPath.row];

    return cell;

}

-(IBAction)checkButton:(UIButton *)sender
{
    CGPoint buttonPosition = [sender convertPoint:CGPointZero toView:self.tblvie];
    NSIndexPath *indexPath = [self.tblvie indexPathForRowAtPoint:buttonPosition];


    if ([self.checkimageArray containsObject:[self.lblArray objectAtIndex:indexPath.row]]) {
        [self.checkimageArray removeObject:[self.lblArray objectAtIndex:indexPath.row]];
        self.titleLabel.text=@"";

           }
    else {
        [self.checkimageArray addObject:[self.lblArray objectAtIndex:indexPath.row]];
        NSArray *arr=[self.tblvie indexPathsForSelectedRows];// here i am declaring an array but array is coming nil

                self.titleLabel.text=[self.lblArray objectAtIndex:indexPath.row];

    }
    [self.tblvie reloadRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation: UITableViewRowAnimationFade];


}

Answer 1

在.h int checkBoxesCount;中添加Int变量在ViewDidLoad中将其初始化为checkBoxesCount = 0;

比如下更新您的方法

-(IBAction)checkButton:(UIButton *)sender
{
    CGPoint buttonPosition = [sender convertPoint:CGPointZero toView:self.tblvie];
    NSIndexPath *indexPath = [self.tblvie indexPathForRowAtPoint:buttonPosition];


    if ([self.checkimageArray containsObject:[self.lblArray objectAtIndex:indexPath.row]]) {
        [self.checkimageArray removeObject:[self.lblArray objectAtIndex:indexPath.row]];

        checkBoxesCount = checkBoxesCount - 1;
        self.titleLabel.text=[NSString stringWithFormat:@"Count %d",checkBoxesCount];

           }
    else {
        [self.checkimageArray addObject:[self.lblArray objectAtIndex:indexPath.row]];
//                self.titleLabel.text=[self.lblArray objectAtIndex:sender.tag];
        checkBoxesCount = checkBoxesCount + 1;
        self.titleLabel.text=[NSString stringWithFormat:@"Count %d",checkBoxesCount];

    }
    [self.tblvie reloadRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation: UITableViewRowAnimationFade];


}

问题已解决。我在最后测试了同样的东西。

复选框计数未正确显示

1 个答案: