Question

My table view uses a custom class to create cells

MyCustomCell.h

#import <UIKit/UIKit.h>

@interface MyCustomCell : UITableViewCell

@end

MyCustomCell.m

#import "MyCustomCell.h"
#import <QuartzCore/QuartzCore.h>


@implementation MyCustomCell

- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self)
    {
        // Initialization code

    }
    return self;
}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
    [super setSelected:selected animated:animated];

    self.selectionStyle = UITableViewCellSelectionStyleBlue;

    // Configure the view for the selected state
}

- (void)layoutSubviews
{
    [super layoutSubviews];
    self.imageView.frame = CGRectMake(5,4,80,80);
    self.imageView.layer.masksToBounds = YES;
    self.imageView.layer.cornerRadius = 5.0f;
    self.imageView.contentMode = UIViewContentModeScaleAspectFill;
    float imgWidth =  self.imageView.image.size.width;
    if(imgWidth > 0)
    {
        self.textLabel.frame = CGRectMake(110,2,170,25);
        self.detailTextLabel.frame = CGRectMake(110,18,200,25);
        self.detailTextLabel.font = [UIFont boldSystemFontOfSize:12];
        self.detailTextLabel.alpha = 0.0;
        self.textLabel.font = [UIFont boldSystemFontOfSize:12];
        self.textLabel.textColor = [UIColor colorWithRed:.2314 green:.3490 blue:.5961 alpha:1.0];


    }
}

@end

and is use it like this:

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

    static NSString *CellIdentifier = @"Cell";


    MyCustomCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (cell == nil)
    {


        cell = [[MyCustomCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
        cell.selectionStyle = UITableViewCellSelectionStyleNone;
        //cell.accessoryType = UITableViewCellAccessoryCheckmark;



    }

    CGFloat screenHeight = [UIScreen mainScreen].bounds.size.height;

    if ([UIScreen mainScreen].scale == 2.f && screenHeight == 568.0f)
    {
    UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [btn setBackgroundImage:[UIImage imageNamed:@"select2x.png"] forState:UIControlStateNormal];
    [btn addTarget:self action:@selector(SelectButtonTapped:) forControlEvents:UIControlEventTouchUpInside];
    btn.frame = CGRectMake(110, 25, 63, 32);
        //btn.tag = indexPath.row;

        viewProfile = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        viewProfile.frame = CGRectMake(190, 25, 93, 32);
        //[viewProfile setTitle:@"View Profile" forState:UIControlStateNormal];
        [viewProfile setBackgroundImage:[UIImage imageNamed:@"[e-mail]"] forState:UIControlStateNormal];
        [viewProfile addTarget:self action:@selector(viewProfileTapped:) forControlEvents:UIControlEventTouchUpInside];
        [cell.contentView addSubview:viewProfile];

    [cell.contentView addSubview:btn];

    }

    else
    {

        UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        [btn setBackgroundImage:[UIImage imageNamed:@"select.png"] forState:UIControlStateNormal];
        [btn addTarget:self action:@selector(SelectButtonTapped:) forControlEvents:UIControlEventTouchUpInside];
        btn.frame = CGRectMake(110, 25, 63, 32);
        //btn.tag = indexPath.row;

        viewProfile = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        viewProfile.frame = CGRectMake(190, 25, 93, 32);
        //[viewProfile setTitle:@"View Profile" forState:UIControlStateNormal];
        [viewProfile setBackgroundImage:[UIImage imageNamed:@"viewProfile.png"] forState:UIControlStateNormal];
        [viewProfile addTarget:self action:@selector(viewProfileTapped:) forControlEvents:UIControlEventTouchUpInside];
        [cell.contentView addSubview:viewProfile];

        [cell.contentView addSubview:btn];


       }

    return cell;

}

Now each cell contains two buttons which perform an action(I do not make action on cell tap but on button tap) as created like above

Now what i want is when a user taps a button(say select button) in a particular cell, that particular cell only should become highlighted or shaded or coloured and when user taps a button in another cell, that cell should become highlighted making the previous cell unhighlighted. I have tried storing previous and next indexpath’s in 2 different variables but not able to work on them to achieve what i want.

- (void)SelectButtonTapped:(UIButton *)button
{


    UITableViewCell *cell = (UITableViewCell *)button.superview.superview;

    NSIndexPath *indexPath = [homeTable indexPathForCell:cell];

    // UITableViewCell *cell1 = [homeTable cellForRowAtIndexPath:indexPath];

    //currentSelection = indexPath.row;

    //MyCustomCell *cell1 = (MyCustomCell *)[homeTable cellForRowAtIndexPath:indexPath];

    [[homeTable delegate]tableView:homeTable didSelectRowAtIndexPath:indexPath];

     //MyCustomCell *cell1 = (MyCustomCell *)[homeTable cellForRowAtIndexPath:indexPath];

    /*if(currentSelection == 0)
    {
         [cell1 setSelected:YES animated:YES];
        currentSelection++;
    }
    else
    {
         [cell1 setSelected:YES  animated:YES];

    }*/
   // NSIndexPath *indexPath1 = [homeTable indexPathForCell:cell];

    NSLog(@"current===>%d",currentSelection);



    //[cell1 setSelected:NO animated:YES];

    //if(currentSelection == indexPath)




    //UIButton *clickButton = (UIButton *)sender;
    // NSIndexPath *indexPathHighlight = [NSIndexPath indexPathForRow:button.tag inSection:0];

    //button.tag = indexPathHighlight.row;





    //UITableViewCell *newCell = [homeTable cellForRowAtIndexPath:indexPathHighlight];


    //if(newCell.selected == NO)
    //{
    //[newCell setSelected:YES animated:YES];
     //   [newCell setBackgroundColor:[UIColor lightGrayColor]];
    //}
    //else
   // {
        //[newCell setSelected:NO animated:YES];
        //[newCell setBackgroundColor:[UIColor colorWithRed:232.0f/255.0f green:237.0f/255.0f blue:240.0f/255.0f alpha:1.0f]];
    //}
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{

    MyCustomCell *cell1 = (MyCustomCell *)[homeTable cellForRowAtIndexPath:indexPath];

    cell1.selectionStyle= UITableViewCellSelectionStyleBlue;

}

You can look at my messy button action method. I have tried many options but with no success. Please help on this.

Answer 1

Uncomment the line :

btn.tag = indexPath.row+1000;

Also change the cell selection style as

[cell setSelectionStyle:UITableViewCellSelectionStyleBlue];

when create it.

In SelectButtonTapped method :

- (void)SelectButtonTapped:(UIButton *)button
{
  int buttonIndex = button.tag;

  for (int row = 0; row<numberOfRows; row++)
  {
    NSIndexPath indexPathHighlight = [NSIndexPath indexPathForRow:row inSection:0];

    UITableViewCell *newCell = [yourTable cellForRowAtIndexPath:indexPathHighlight];

    if (row == buttonIndex - 1000)
    {
        [newCell setSelected:YES animated:YES];
    }
    else
    {
        [newCell setSelected:NO animated:YES];
    }
  }
}