當從另一個XIB導航時，UITable單元格不在XIB上顯示

Question

我在UITable單元格上做了一個空項目並且它工作正常。使用相同的代碼，我將其添加到有多個xib鏈接的現有項目中。從另一個xib導航到此頁面時，表格單元格確實出現，但內容和所需的單元格數量未運行。

下面是我的當前項目的代碼：

OptionViewController.m：

#import "OptionViewController.h" 
#import "FishAppDelegate.h" 
#import "MainViewController.h" 
#import "PetFishViewController.h" 
#import "MarineFishViewController.h" 

@interface OptionViewController() 

@end 

@implementation OptionViewController 

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil 
{ 
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; 
    if (self) { 
     // Custom initialization 
    } 
    return self; 
} 

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    self.title =@"Choose a category :)"; 

    // Do any additional setup after loading the view from its nib. 
} 

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

-(IBAction)PetFish:(id)sender 
{ 
    PetFishViewController *petFish = [[PetFishViewController alloc]initWithNibName:nil bundle:nil]; 
    [[self navigationController] pushViewController:petFish animated:YES]; 
} 


// this is the sub class containing table cells 

-(IBAction)MarineFish:(id)sender 
{ 
    MarineFishViewController *MarineFish = [[MarineFishViewController alloc]initWithNibName:nil bundle:nil]; 
    [[self navigationController] pushViewController:MarineFish animated:YES]; 
} 

@end 

在當前子類：海洋魚類

MarineFishController.h

#import <Foundation/Foundation.h> 

@interface MarineFishViewController : UITableViewController 
{ 
    NSMutableArray *fishList; 
} 

@end 

MarineFishController.m：

#import "MarineFishViewController.h" 
#import "MarineFish.h" 

@implementation MarineFishViewController 
{ 
    /*NSArray *tableData; 
    NSArray *thumbnail; 
    */ 

} 

-(id) init{ 

    //call the superclass 
    self = [super initWithStyle:UITableViewStyleGrouped]; 

    if(self){ 

     fishList = [[NSMutableArray alloc] init]; 

     MarineFish *Item1 = [[MarineFish alloc] initWithName:@"Shark" imageName:@"Sea.jpg"]; 

     [fishList addObject:Item1]; 
    } 

    return self; 
} 

-(id)initWithStyle:(UITableViewStyle)style{ 

    return [self init]; 
} 

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 

    return [fishList count]; 
} 

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

    //create an instance of uitableviewcell 
    //check for a reusable cell first, use if exist 

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"UITableViewCell"]; 

    //if there is no reusable cell of this type,create new one 

    if(!cell) 
    { 
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"UITableViewCell"]; 

    } 

    //set text on the cell 

    MarineFish *p = [fishList objectAtIndex:[indexPath row]]; 
    [[cell textLabel] setText:[[NSString alloc] initWithFormat:@"%@",[p fishName]]]; 

} 

@end 

關於表。我只在魚列表中添加了一個item1，因此應該只顯示一個單元格。

Answer 1

您不需要覆蓋init和initWithStyle:方法。將你的代碼從init到viewDidLoad

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 

    fishList = [[NSMutableArray alloc] init]; 
    MarineFish *Item1 = [[MarineFish alloc] initWithName:@"Shark" imageName:@"Sea.jpg"]; 
    [fishList addObject:Item1]; 
} 

編輯 錯誤是如此健忘......

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

必須返回一個UITableViewCell對象。所以把return cell;放在最後。 Here編輯MarineFishViewController.m。