iPhone:如何允许在自定义单元格的表格视图中进行多项选择?

问题描述

如何调整它以进行多项选择?并获取选中的

How can I adapt this to be able to make multiple selections? and get the selected ones

- (id)initWithCellIdentifier:(NSString *)cellID {
if ((self = [super initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellID])) {

    UITableViewCell *cell=self; 
            UIImage *cry = [UIImage APP_CRYSTAL_SELECT];
    self.leftImage = [[[UIImageView alloc] initWithImage:cry] autorelease] ;
            [self.contentView addSubview:leftImage];            
}

而选择的方法是:

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:animated];
      if(selected)
      {
       NSArray *subviews=[self.contentView subviews];
        for(UIView* view in subviews){
          if([view isEqual:self.leftImage]){
             [self.leftImage setHighlightedImage:[UIImage APP_CRYSTAL_SELECTED]];
        }
    }
}
else
{       
    NSArray *subviews=[self.contentView subviews];
    for(UIView* view in subviews){
        if([view isEqual:self.leftImage]){
            [self.leftImage setHighlightedImage:[UIImage APP_CRYSTAL_SELECT]];
        }
    }
  }
}

推荐答案

对于多选，设置一个 NSMutableArray ivar(在本例中为 selectedIndexPaths)来保存被选中的项目.在 didSelectRowAtIndexPath 中添加或删除 indexPaths 到这个数组.

For multiple selection, setup an NSMutableArray ivar (selectedIndexPaths in this case) to hold the items that are selected. In didSelectRowAtIndexPath add or remove indexPaths to this array.

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{   
        if(![self.selectedIndexPaths containsObject:indexPath])
            [self.selectedIndexPaths addObject:indexPath];
        else
            [self.selectedIndexPaths removeObject:indexPath];
}

稍后使用 selectedIndexPaths 做任何你想做的事！干杯！

Use selectedIndexPaths later to do whatever you wish! Cheers!

-阿克谢

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