UITableView dataSource必须从tableView：cellForRowAtIndexPath返回一个单元格 [英] UITableView dataSource must return a cell from tableView:cellForRowAtIndexPath

问题描述

我在 https://stackoverflow.com进行了搜索/ search？q = UITableView + dataSource + must + return + a + cell + from + tableView％3AcellForRowAtIndexPath ，但我知道我需要检查单元格是否为零，但我的单元格是自定义的，我不是使用xib，我使用storyboard.i我也选择了storyboard.as上的类CustomPlaceTableViewCell http：/ /i.stack.imgur.com/g0rRO.png

i have search at https://stackoverflow.com/search?q=UITableView+dataSource+must+return+a+cell+from+tableView%3AcellForRowAtIndexPath ,but i know i need to check if the cell is nil,but my cell is custom,and i am not use xib,i am use storyboard.i am also choice the class CustomPlaceTableViewCell at storyboard.as http://i.stack.imgur.com/g0rRO.png

代码：

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
CustomPlaceTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    //if ([cell isKindOfClass:[CustomPlaceTableViewCell class]]) { cell = (CustomPlaceTableViewCell *)cell; }
//retrieve the place info
Place *place = [self.placeDataController objectInPlaceListAtIndex:indexPath.row];

//set the cell with place info
if (place.name)
{
    cell.nameLabel.text =place.name;
}
else
{
    cell.nameLabel.text = @"PortAura";
}

 if (place.distance)
{
    cell.distanceLabel.text = place.distance;    
}
else
{
    cell.distanceLabel.text = @"PortAura";
}



 return cell;

}


CustomPlaceTableViewCell.m
@interface CustomPlaceTableViewCell : UITableViewCell{
  UILabel *nameLabel;
  UILabel *distanceLabel;
  UILabel *addressLabel;
}
@property (nonatomic) IBOutlet UILabel *nameLabel;
@property (nonatomic) IBOutlet UILabel *distanceLabel;
@property (nonatomic) IBOutlet UILabel *addressLabel;
 @end


   @implementation CustomPlaceTableViewCell
   @synthesize distanceLabel,nameLabel,addressLabel;

  - (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
 }

 @end

当我运行我的应用程序时，它会给我：

when i run my app ,it give me :

2012-07-02 17：16：26.675 MyAura [2595： 707] ***由于未捕获的异常'NSInternalInconsistencyException'终止应用程序，原因：'UITableView dataSource必须从tableView返回一个单元格：cellForRowAtIndexPath：'

2012-07-02 17:16:26.675 MyAura[2595:707] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'UITableView dataSource must return a cell from tableView:cellForRowAtIndexPath:'

推荐答案

我首先使用：

    PlaceMasterViewController *placeController = [[PlaceMasterViewController alloc]init];
    [self.navigationController pushViewController:placeController animated:YES];

导致我表中没有数据，或者给我错误，所以我用过：

cause me no data in the table,or give me the mistake,so i used:

  UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:@"MainStoryboard"
                                                             bundle: nil];

    PlaceMasterViewController *placeController = (PlaceMasterViewController*)[mainStoryboard 
                                                       instantiateViewControllerWithIdentifier: @"peoplemastViewControl"];
    [self.navigationController pushViewController:placeController animated:YES];

一切正常

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