Question

我在表格视图中使用自定义复选框按钮，并希望将所选单元格的数据保存到可变数组....任何人都可以帮助我...谢谢

Answer 1

创建一个可变数组来存储您选择的数据，让我们称之为'yourSeparatedData'，在cellForRowAtIndexPath中设置复选框的标记，并将onCheck：method设置为target。代码看起来像这样：

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    NSString *CellIdentifier = @"setMe";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil)
    {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyle………
    }
    checkBox = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    checkBox.frame = CGRectMake(customizeMe);
    if(yourSeparatedData && [yourSeparatedData indexOfObject:[yourTableViewDataSource objectAtIndex:indexPath.row]] != NSNotFound)
    {
        [checkBox setBackgroundImage:[UIImage imageNamed:@"check.png"] forState:UIControlStateNormal];
    }
       else {
        [checkBox setBackgroundImage:[UIImage imageNamed:@"unCheck.png"] forState:UIControlStateNormal];
        }
        [checkBox addTarget:self action:@selector(onCheck:) forControlEvents:UIControlEventTouchUpInside];
        [checkBox setTag:indexPath.row];

        [cell addSubview:checkBox];
        return cell;

}

-(void)onCheck:(id)sender {
     if(yourSeparatedData && [yourSeparatedData indexOfObject:[yourTableViewDataSource objectAtIndex:[sender tag]]] != NSNotFound)
       {
        [sender setBackgroundImage:[UIImage imageNamed:@"unCheck.png"] forState:UIControlStateNormal];
        [yourSeparatedData removeObject:[yourTableViewDataSource objectAtIndex:[sender tag]]];
       }
      else {
        [sender setBackgroundImage:[UIImage imageNamed:@"check.png"] forState:UIControlStateNormal];
        [yourSeparatedData addObject:[yourTableViewDataSource objectAtIndex:[sender tag]]];
      }
      [yourTableView reloadData];
 }

此代码未经过测试，您正在使用复选框，因此我假设您不仅要分隔一个数据，在选择结束时，您将获得“yourSeparatedData”，其中包含从tableView中选取的对象。

Answer 2

您可以在UITableView单元格中尝试自定义操作按钮预设，您也可以使用放置复选框图像，点击后可以更改图像，如下所示是代码

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:   (NSIndexPath *)indexPath{
UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:@"identifire"];
 cell=[[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"identifire"] autorelease];
    cell.detailTextLabel.text=[id_Array objectAtIndex:indexPath.row];
    cell.detailTextLabel.hidden=YES;
    button = [UIButton buttonWithType:UIButtonTypeCustom];
    NSString *path1 = [[NSBundle mainBundle] pathForResource:@"n_cross" ofType:@"png"];
    UIImage *buttonImage1 = [[UIImage alloc] initWithContentsOfFile:path1];
    [button setImage:buttonImage1 forState:UIControlStateNormal];
    [button addTarget:self 
               action:@selector(customActionPressed:)
     forControlEvents:UIControlEventTouchDown];
    [button setTitle:@"Custom Action" forState:UIControlStateNormal];
    button.frame = CGRectMake(245.0f, 20.0f, 40.0f, 40.0f);
    [cell addSubview:button];
    [buttonImage1 release];
        CGRect imageFrame=CGRectMake(10,8,50,50);
        self.cellimage=[[[UIImageView alloc] initWithFrame:imageFrame] autorelease];
        self.cellimage.image=[imageIdArray objectAtIndex:indexPath.row];
        [cell.contentView addSubview:self.cellimage];
        return cell;
}
-(void)customActionPressed :(id)sender
{
//Get the superview from this button which will be our cell
UITableViewCell *owningCell = (UITableViewCell*)[sender superview];
NSIndexPath *cell = [_tableView indexPathForCell:owningCell];
NSString *uid=[id_Array objectAtIndex:cell.row];
[id_Array removeObjectAtIndex:cell.row];
[_tableView reloadData];
[self performSelectorInBackground:@selector(ignoreRequest:) withObject:uid];
}

这里我有一个id_Array，在选择一个单元格时，我只是删除该索引处的对象

Answer 3

您必须手动执行此操作，UITableView或UITableViewController中没有任何功能可以自动执行此操作。

Answer 4

当用户选择任何单元格时，在didSelectRowAtIndexPath中，您可以动态添加所选对象。

[someMutableArr addObject:[tableArr objectAtIndex:indexPath.row]];

Answer 5

试试这个

- (void)onButtonClick {

    int numberOfSections = [tableView numberOfSections];

    for (int section = 0; section < numberOfSections; section++) {

        int numberOfRows = [tableView numberOfRowsInSection:section];

        for (int row = 0; row < numberOfRows; row++) {

            NSIndexPath *indexPath = [NSIndexPath indexPathForRow:row inSection:section];
            UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];

            if (cell.accessoryType == UITableViewCellAccessoryCheckmark) {

                // Cell is selected
               //here you can add that values into an array
            } else {

                // Cell is not selected
            }
        }
    }
}

如何保存tableview单元格的数据

5 个答案: