CODEWITHSUNDEEP
iosobjective-ciphone
Krishna kushwaha
Krishna kushwaha

Reputation: 275

how to add checkboxes button in UITableViewCell objective c

I know here so many answers of this question but i unable to get proper meaning to all.

I want to button selection not cell. by default button is unchecked and if some one click or press button than button is changed to checked(only presses button) not a all.

I mentioned my screenshot and code there is button , array's values (appliances's name) and something with switch button

code 

-(IBAction)SelectAppliance:(id)sender {
    UIButton *btn=(UIButton*)sender;
    NSLog(@"button tag is :%ld",(long)btn.tag);
    NSLog(@"click button"); 
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return [_arrApplnc count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    static NSString *CellIdentifier = @"SceneTableViewCell";

    SceneTableViewCell *cell = (SceneTableViewCell*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
    }

    if(checked) { 
         [cell.btnRadio setBackgroundImage:[UIImage imageNamed:@"checked"] forState:UIControlStateNormal];
    } else {
         [cell.btnRadio setBackgroundImage:[UIImage imageNamed:@"unchecked"] forState:UIControlStateNormal];
    }

    cell.btnRadio.tag = indexPath.row;
    cell.lblName.text =[[_arrApplnc valueForKey:@"applianceName"] objectAtIndex:indexPath.row];
    [cell.btnRadio addTarget:self action:@selector(SelectAppliance:) forControlEvents:UIControlEventTouchUpInside];
    return cell;
}

UI Screenshort

Upvotes: 0

Views: 917

Answers (1)

Paulw11
Paulw11

Reputation: 115083

If you are going to use a button in the cell, I would suggest using a delegation pattern so that the cell itself handles the button tap and sends a message to the view controller.

In SceneTableViewCell.h

@protocol SceneTableViewCellDelegate <NSObject>
@optional
    - (void)checkBoxTapped:(SceneTableViewCell *)cell;
@end

@interface SceneTableViewCell : NSObject
    @property (nonatomic, weak) id <SceneTableViewCellDelegate> delegate;
@end

In SceneTableViewCell.m

-(IBAction)checkboxTapped:(UIButton *)sender {
    [self.delegate checkBoxTapped:self];
}

In your ViewController.m

@property (nonatomic,strong) NSMutableIndexSet *checkedRows;

- (void) viewDidLoad {
    self.checkedRows = [[NSMutableIndexSet alloc]init];

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    static NSString *CellIdentifier = @"SceneTableViewCell";

    SceneTableViewCell *cell = (SceneTableViewCell*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
        cell.delegate = self
    }


    if([self.checkedRows contains:indexPath.row]) { 
         [cell.btnRadio setBackgroundImage:[UIImage imageNamed:@"checked"] forState:UIControlStateNormal];
    } else {
         [cell.btnRadio setBackgroundImage:[UIImage imageNamed:@"unchecked"] forState:UIControlStateNormal];
    }

    cell.lblName.text =[[_arrApplnc valueForKey:@"applianceName"] objectAtIndex:indexPath.row];

    return cell;
}

- (void) checkBoxTapped:(SceneTableView Cell *)cell {

    NSIndexPath *indexPath = [tableView indexPathForCell:cell];
    if ([self.checkedRows contains: indexPath.row]) {
        [self.checkedRows removeIndex: indexPath.row];
    } else {
        [self.checkedRows addIndex: indexPath.row];
    }

    [tableView reloadRowsAt:@[indexPath], withRowAnimation: UITableViewRowAnimationAutomatic];
}

Another approach would be to simply to use a UIImageView in the cell rather than a UIButton and use the didSelect handler to toggle the checked state. That way the user can tap anywhere in the cell.

Upvotes: 1

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