自定义单元格无法在iOS 6的表格视图中显示

Question

#import "MasterViewController.h"
#import "DetailViewController.h"

@interface MasterViewController ()
@end

@implementation MasterViewController

 - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
  {
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
     if (self) {
          self.title = NSLocalizedString(@"Master", @"Master");
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) {
        self.clearsSelectionOnViewWillAppear = NO;
        self.contentSizeForViewInPopover = CGSizeMake(320.0, 600.0);
    }
  }
  return self;
 }

   - (void)dealloc
   {
      [_detailViewController release];

    [super dealloc];
    }

   - (void)viewDidLoad
    {
       [super viewDidLoad];

     }

    - (void)didReceiveMemoryWarning
     {
         [super didReceiveMemoryWarning];
         // Dispose of any resources that can be recreated.
      }



     #pragma mark - Table View

        - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
         {
               return 1;
         }

        - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
         {
                return 5;
          }
         -(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{


    return 100.0;
         }

       // Customize the appearance of table view cells.
        - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
       {
             static NSString *CellIdentifier = @"CustomCell";
             CustomCell *cell = (CustomCell *)[tableView dequeueReusableCellWithIdentifier: CellIdentifier];

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

          }

    cell.cellDate.text=@"date";
     cell.cellDescription.text =@"Description";
     cell.cellImageview.image = [UIImage imageNamed:@"facebook.png"];
      cell.cellTitle.text = @"Title";
      return cell;


    }

 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
 {
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
    if (!self.detailViewController) {
        self.detailViewController = [[[DetailViewController alloc] initWithNibName:@"DetailViewController_iPhone" bundle:nil] autorelease];
    }
       [self.navigationController pushViewController:self.detailViewController animated:YES];
}
    else
   {

   }
  }

@end

---

.h file

    #import <UIKit/UIKit.h>
    #import "CustomCell.h"
    #import "XMLStringFile.h"

  @class DetailViewController;

 @interface MasterViewController : UITableViewController{


 }

 @property (strong, nonatomic) DetailViewController *detailViewController;
 @property(strong,nonatomic)CustomCell *customCell;
  @end

---

CustomCell.h

---

  #import <UIKit/UIKit.h>

  @interface CustomCell : UITableViewCell{

   IBOutlet UIImageView *cellImageview;
   IBOutlet UILabel *cellTitle; 
   IBOutlet UILabel *cellDescription;
   IBOutlet UILabel *cellDate;

 }
 @property (retain, nonatomic) IBOutlet UIImageView *cellImageview;
 @property (retain, nonatomic) IBOutlet UILabel *cellTitle;
 @property (retain, nonatomic) IBOutlet UILabel *cellDescription;
 @property (retain, nonatomic) IBOutlet UILabel *cellDate;

 @end

---

CustomCell.m

---

      #import "CustomCell.h"

      @implementation CustomCell

    @synthesize cellDate;
   @synthesize cellDescription;   
  @synthesize cellImageview;
 @synthesize cellTitle;

 - (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];

// Configure the view for the selected state
}

- (void)dealloc {
    [super dealloc];
 }
@end

---

This is my both class here Problem is in tableview data of the customcell cant Display onlt white screen. Here i work in ios with masterdetails view template.. here i have also added m file in compile source Customcell.xib size is 300X100 Here my output My xib file as below

please help me to solve problem

Answer 1

 if(cell == nil)
 {
     NSArray *outlets = [NSArray arrayWithArray:[[NSBundle mainBundle] loadNibNamed:@"CustomCell" owner:self options:nil]];
     for(id obj in outlets)
     {
         if([obj isKindOfClass:[UITableViewCell class]])
         {
             cell = (CustomCell *)obj;
         }
     }
 }

If your CustomCell is made via XIB then Write this Code where your cell is nil .

EDIT:-
This may be the cause - I think you haven't changed your CustomCell 's class name. Follow these steps -

1. Take a XIB with name CustomCell.xib then delete its view.
2. Take a UITableViewCell and set its height and structure according to you.
3. Select File's Owner and change its class name to CustomCell , Same thing do with UITableViewCell ... select it and change its class name to CustomCell .
4. Now connect all subView 's IBOutLets .

Note:- Select IBOutLets by right clicking on UITableViewCell not from File's Owner .

Answer 2

If the cell is designed in a nib then you need to load the cell from the nib.

This actually has support in UIKit since iOS 5

What you need to do is register your nib with the UITableView .

- (void)viewDidLoad
{
  [super viewDidLoad];

  [self.tableView registerNib:[UINib nibWithNibName:@"Customcell" bundle:nil]   
       forCellReuseIdentifier:@"CustomCell"];

  //...
}

Now your tableView:cellForRowAtIndexPath: just needs to look like this

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
  static NSString *CellIdentifier = @"CustomCell";
  CustomCell *cell = (id)[tableView dequeueReusableCellWithIdentifier: CellIdentifier];

  cell.cellDate.text        = @"date";
  cell.cellDescription.text = @"Description";
  cell.cellImageview.image  = [UIImage imageNamed:@"facebook.png"];
  cell.cellTitle.text       = @"Title";

  return cell;
}

NB

Make sure to remember to set CustomCell as the reuseIdentifier in the xib

Some other observations

• Really you should be using ARC for a new project.
• @synthesize is implicit so not required in most cases
• It's probably a bad idea to #import "CustomCell.h" in MasterViewController.h . You should move this to the .m and use a forward declaration in the .h instead - @class CustomCell;

• You also do not need to declare the backing ivars for properties as these will also be generated by the compiler eg you don't need to declare the following

   @interface CustomCell : UITableViewCell { IBOutlet UIImageView *cellImageview; IBOutlet UILabel *cellTitle; IBOutlet UILabel *cellDescription; IBOutlet UILabel *cellDate; } 

Answer 3

Do the following in viewDidLoad

- (void)viewDidLoad
{
   [super viewDidLoad];
   UINib *nib = [UINib nibWithNibName:@"Customcell" bundle:nil];
   [[self tableView] registerNib:nib forCellReuseIdentifier:@"CustomCell"];
}