如何切换UITableView Cell选择状态 [英] How to toggle UITableView Cell selected status

问题描述

我有一个带有自定义Cell的UITableView，该单元格包含一个UIImageView和一个UILabel。现在当我第一次加载我的表时，它会在每个单元格和不同标签上加载相同的图像，它从LabelArray中获取。

I have a UITableView with a custom Cell, the cell contains a UIImageView and a UILabel. Now When I load my table first time, It loads with a same image on each cell and different labels, which it takes from the LabelArray.

现在我正在谈论的图像about是一个radioButton，所以当用户点击单元格时，图像会发生变化。如果用户再次点击它会更改为默认状态。

Now the image I am talking about is a radioButton, So when the user clicks the cell, the image changes. If user clicks again it changes to default state.

为此，我使用了这个函数，并且我在customcell类中声明了一个名为selectionStatus的bool变量。

For this to happen, I have used this function and also I have declared a bool variable in my customcell class called selectionStatus.

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    CustomCell * cell = (CustomCell* )[tableView cellForRowAtIndexPath:indexPath];

    if(indexPath.row == 0)
    {
        if(cell.selectionStatus == TRUE)
        {           
            //Do your stuff
           cell.selectionStatus = FALSE;
        }
        else
        {
            //Do your stuff
            cell.selectionStatus = TRUE;
        }
    }

    if(indexPath.row == 1)
    {
        if(cell.selectionStatus == TRUE)
        {           
            //Do your stuff
           cell.selectionStatus = FALSE;
        }
        else
        {
            //Do your stuff
            cell.selectionStatus = TRUE;
        }
    }
}

这很好，（但是我想知道它是否是一种正确的方法，或者我们可以检查cell.selected属性）并且我能够获得该效果。但是现在当我关闭View并再次打开它时，函数

This works fine, (but I want to know whether it is a proper way, or can we check the cell.selected property) and I am able to get that effect. But now when I close the View and open it again the function

根据以下评论编辑@Anil

Edit based on below comments with @Anil

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

    if([self.checkedIndexpath count]  == 0)
    {
        [tableCell.selectionImage setImage:@"xyz.png"];
    }
    else
    {        
        for (int i =0; i <[self.checkedIndexPath count]; i++)
        {
            NSIndexPath *path = [self.checkedIndexPath objectAtIndex:i];
            if ([path isEqual:indexPath])
            {               
                [tableCell.selectionImage setImage:@"abc.png"]
            }
            else
            {
                 [tableCell.selectionImage setImage:@"xyz.png"]            
             }
    }
return tableCell;

问候
Ranjit

Regards Ranjit

推荐答案

您必须在didSelectRowAtIndexPath中保存所选行的索引路径并检查cellForRowAtIndexPath中的索引路径：设置相应的图像

you have to save the index path of the selected row in didSelectRowAtIndexPath and check the index path in cellForRowAtIndexPath: set the corresponding image

你想要多重选择吗？试试这个...

Do you want multiple selection? try this...

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
CustomCell * cell = (CustomCell* )[tableView cellForRowAtIndexPath:indexPath];

if(indexPath.row == 0)
{
    if(cell.selectionStatus == YES)
    {     
      [self.checkedIndexPaths addObject:indexPath];
        //Do your stuff
       cell.selectionStatus = NO;
    }
    else
    {
        [self.checkedIndexPaths removeObject:indexPath];
        //Do your stuff
        cell.selectionStatus = YES;
    }
}
}  

编辑

在cellForIndexPath中检查如下

Edit
In cellForIndexPath check like this

 // Set the default image for the cell. imageXYZ   
for (NSIndexPath *path in self.checkedIndexPath) 
{
    if ([path  isEqual:indexPath])
    {
        //set the changed image for the cell. imageABC
    }
    // no need of else part
}

确实我们会看到

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