CODEWITHSUNDEEP
iosobjective-cuitableview
CAN
CAN

Reputation: 1717

Calling UITableView scrollEnabled issue

This is my first question about TableView I have a view for UITableViewController and a view for UITableViewCell. I've created a different CellView design for UITableViewController.

My cell view is working fine. I've a small issue that once I click on the btnEdit it won't stop the UITableViewController from scrolling. Please how can I solve this issue?

posListViewController.h

                                                         //UPDATED
@interface posListViewController : UITableViewController <CellHandlingDelegate> //ISSUE{
}
@property (nonatomic, retain) IBOutlet UITableView *tableV;

//UPDATED
-(void) buttonWasSelected:(id)sender;

posListViewController.m

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

    PosListViewCell *cell = (PosListViewCell*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:@"PosListViewCell" owner:nil options:nil];
        for(id currentObject in topLevelObjects){
            if([currentObject isKindOfClass:[PosListViewCell class]]){
                cell = (PosListViewCell *)currentObject;
                break;
            }
        }
    }
    NSDictionary *selectedContent = [data objectAtIndex:indexPath.row];
    [cell setData:selectedContent];
    return cell;
}

//UPDATED
- (void) buttonWasSelected:(id)sender{

    self.tableV.scrollEnabled = NO;
}

PosListViewCell.h

#import <UIKit/UIKit.h>

//UPDATED
@protocol CellHandlingDelegate <NSObject>
- (void) buttonWasSelected:(id)sender;
@end

@class posListViewController;

@interface posListViewCell : UITableViewCell {
        posListViewController *control;
}

//UPDATED
@property (nonatomic, retain) id<CellHandlingDelegate> parentDelegate;

PosListViewCell.m

-(void)creat {
    tapGestureRecognizer1 = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(value1)];
    tapGestureRecognizer1.numberOfTapsRequired = 1;
}

//Every cell has it own button when it is selected and click on the selected one it will be deleted.
//while it is selected the scroll should NOT be moving. 
- (IBAction)btnEdit:(id)sender event:(id)event{

    lblEdit.layer.borderColor = [UIColor redColor].CGColor;
    lblEdit.layer.borderWidth = 1.0;
    [lblLpl addGestureRecognizer:tapGestureRecognizer1];

    control.tableV.scrollEnabled = NO;
    NSLog(@"CLICKED");
}

-(void)value1 {
    //Delete that value......
}

Upvotes: 1

Views: 291

Answers (1)

hackerinheels
hackerinheels

Reputation: 1141

Storing the reference to your parent view controller in each cell is not the best way to implement this.

Why don't you implement a delegate which is implemented by your posListViewController instead. And from there. You can disable the scroll. Something like this.

@protocol CellHandlingDelegate <NSObject>
    - (void) buttonWasSelected:(id)sender;
@end

Let your cell class have this:

@property (nonatomic, weak) id<CellHandlingDelegate> parentDelegate;

Then in posListViewController.h add

And in posListViewController.m add handler function.

  - (void) buttonWasSelected:(id)sender{
     // Disable scrolling of table 
}

EDIT: Make the following changes:

  1. In posListViewController.m, assign the delegate to self as shown below. When you run pls tell me if the delegate function is being called.

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

PosListViewCell *cell = (PosListViewCell*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
    NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:@"PosListViewCell" owner:nil options:nil];
    for(id currentObject in topLevelObjects){
        if([currentObject isKindOfClass:[PosListViewCell class]]){
            cell = (PosListViewCell *)currentObject;
            break;
        }
    }
}    

cell.parentDelagate = self; <== ADD THIS !!!

NSDictionary *selectedContent = [data objectAtIndex:indexPath.row];
[cell setData:selectedContent];
return cell;
}

`

  1. The delegate member variable should be weak not retain else it can cause retain cycle

Upvotes: 2

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