How to Implement custom cell

问题

I am trying to change a cell in a tableview from generic to custom and have created a new tableview cell class. However, I cannot get the cell to recognize the new custom cell. Instead, it is still displaying the generic cell although I've changed the setting in storyboard to custom in the identify inspector and also changed the class for the tableview cell to the new custom one. I have also wired the elements in the cell in storyboard to the new custom class.

My understanding is the tableview VC knows which class to use from the tableView cellForRowAtIndexPath method and I have changed that too with the code below. The project compiles but continues to show old generic cell. Can anyone see error or suggest what else to do?

#import "customCell.h"

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
  customCell *cell = (customCell *)[self.tableView dequeueReusableCellWithIdentifier:@"Cell"];
    Items *item = [self.fetchedResultsController objectAtIndexPath:indexPath];

    return cell;
}

Thanks in advance for any suggestions.

Edit:

Custom Cell is created in storyboard on top of tableview by dragging uielements. Maybe this is issue:

Style of cell is set to Custom:

回答1:

You need to create new UITableViewCell and enable the "create XIB file...". Create your custom cell in the XIB and make it's custom class as your class you just created.

Then in tableView cellForRowAtIndexPath register the Nib: (it's in swift but I bet you can figure out the objective c parallel...)

tableView.registerNib(UINib(nibName: "YourUITableViewCellClass", bundle: nil), forCellReuseIdentifier: "YourCustomIdentifierFromTheCustomClass")

Then access your cell:

var cell = tableView.dequeueReusableCellWithIdentifier("YourCustomIdentifierFromTheCustomClass")

and that's it.

回答2:

Select the cell on your Storyboard, and enter the name of your class in this field.

When you dequeue it from the identifier, it'll be an instance of that class.

回答3:

you can create custom cell in your main story board by drag the cell view.

create custom class for that prototype.

mention the class name in identifier inspector.

import that class to your view controller .h file.

and made connection of your custom from main story board to custom class.h file.

it works!.

回答4:

When you create a custom cell you have to do these things:

Setup the labels, images etc on storyboard cell.
Create a custom cell class (inheriting from UITableViewCell)(CustomCell.h & .m), CustomCell.h having all of the properties as iboutlet for labels, images etc. and synthesize them all in implementation.
After creating this custom class go back to storyboard, select the custom cell, change its class to the CustomCell and give it some identifier like "MyCustomCell", then right click on the custom cell and connect the IBOutlets with labels etc.
Now import CustomCell class in the class where you are implementing the UITableView and use the properties you defined in CustomCell class.

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

   {
    static NSString *MyIdentifier = @"MyCustomCell";

    CustomCell*cell = [tableView dequeueReusableCellWithIdentifier:MyIdentifier];

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

    // Here we use the provided setImageWithURL: method to load the web image
    // Ensure you use a placeholder image otherwise cells will be initialized with no image
    [cell.imageView setImageWithURL:[NSURL URLWithString:@"http://example.com/image.jpg"]
                   placeholderImage:[UIImage imageNamed:@"placeholder"]];
        cell.myCustomLabel.text = @"My Text";
    return cell; }

来源：https://stackoverflow.com/questions/32999945/how-to-implement-custom-cell

标签

ios

objective-c

uitableview

custom-cell