iOS-ViewController中的第三个TableView未加载nib_Ios_Objective C_Uitableview

iOS-ViewController中的第三个TableView未加载nib

ios objective-c uitableview

iOS-ViewController中的第三个TableView未加载nib,ios,objective-c,uitableview,Ios,Objective C,Uitableview,我试图在我的ViewController中填充3个不同的tableview（不同的tableview根据所选的UISegmentControl显示）-sidetableView、neigursview。前两个完全填充，但是第三个（neightursview）似乎没有加载单元格。请参阅下面的代码。你知道为什么吗？我觉得我在viewdidLoad中定义的第三个nib不对 ViewController.h - (IBAction)segmentControl:(id)sender; @property

我试图在我的

ViewController

中填充3个不同的

tableview

（不同的tableview根据所选的

UISegmentControl

显示）-

sidetableView

、

neigursview

。前两个完全填充，但是第三个（

neightursview

）似乎没有加载单元格。请参阅下面的代码。你知道为什么吗？我觉得我在

viewdidLoad

中定义的第三个nib不对

ViewController.h

- (IBAction)segmentControl:(id)sender;
@property (weak, nonatomic) IBOutlet UISegmentedControl *segmentControl;
@property (weak, nonatomic) IBOutlet UITableView *sidetableView;
@property (strong, nonatomic) NSMutableArray *myFriendData;
@property (weak, nonatomic) IBOutlet UITableView *neighboursView;
@property (strong, nonatomic) NSMutableArray *friendData;
@property (strong, retain) NSMutableArray *neighbourData;

@property (strong, nonatomic) IBOutlet UITableView *friendsView;

- (IBAction)segmentControl:(id)sender;
@property (weak, nonatomic) IBOutlet UISegmentedControl *segmentControl;
@property (weak, nonatomic) IBOutlet UITableView *sidetableView;
@property (strong, nonatomic) NSMutableArray *myFriendData;
@property (weak, nonatomic) IBOutlet UITableView *neighboursView;
@property (strong, nonatomic) NSMutableArray *friendData;
@property (strong, retain) NSMutableArray *neighbourData;

ViewController.m

- (void)viewDidLoad {
        [super viewDidLoad];
         UINib *nib = [UINib nibWithNibName:@"sidebarCell" bundle:nil];
        [self.friendsView registerNib:nib forCellReuseIdentifier: @"sidebarCell"];
        nib = [UINib nibWithNibName:@"MyFriendTableViewCell" bundle:nil];
        [self.sidetableView registerNib:nib forCellReuseIdentifier: @"MyFriendTableViewCell"];
        nib = [UINib nibWithNibName:@"sidebarCell" bundle:nil];
        [self.neighboursView registerNib:nib forCellReuseIdentifier: @"sidebarCell"];
 }

- (NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    if (tableView == self.sidetableView) {
        if ([self.myFriendData count] > 0) {
            return [self.myFriendData count];
        } else {
             return 0;
        }
    }
    if (tableView == self.friendsView) {
        if ([self.friendData count] > 0) {
            return [self.friendData count];

        } else {
            return 0;
          } 
    }
     else {

      //  return [self.neighbourData count];

    }
    return 0;

}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
       if (tableView == self.sidetableView) {
              self.sidetableView.separatorStyle = UITableViewCellSeparatorStyleNone;
             MyFriendTableViewCell *cell = (MyFriendTableViewCell *)[tableView dequeueReusableCellWithIdentifier:@"MyFriendTableViewCell"];
             NSDictionary *friendsName = [self.myFriendData objectAtIndex:indexPath.row];
            [[cell friendName] setText:[friendsName objectForKey:@"title"]];
            NSDictionary *friendsBio = [self.myFriendData objectAtIndex:indexPath.row];
            [[cell friendBio] setText:[friendsBio objectForKey:@"field_friendbio"][@"und"][0][@"safe_value"]];
            NSString *profilePath = [[self.myFriendData objectAtIndex:indexPath.row] objectForKey:@"field_picture"][@"und"][0][@"safe_value"];
           [cell.friendPic sd_setImageWithURL:[NSURL URLWithString:profilePath]];
           NSLog(@"This is profilePath %@",profilePath);
           return cell;
     }
     if (tableView == self.friendsView)
     {
            self.friendsView.separatorStyle = UITableViewCellSeparatorStyleNone;
            sidebarCell *cell = (sidebarCell *)[tableView dequeueReusableCellWithIdentifier:@"sidebarCell"];
            NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"sidebarCell" owner:self options:nil];
           cell = [nib objectAtIndex:0];
           NSDictionary *userName = [self.friendData objectAtIndex:indexPath.row];
           [[cell username] setText:[userName objectForKey:@"node_title"]];

           NSDictionary *userBio = [self.friendData objectAtIndex:indexPath.row];
           [[cell userDescription] setText:[userBio objectForKey:@"body"]];
           NSString *profilePath = [[self.friendData objectAtIndex:indexPath.row] objectForKey:@"friendphoto"];
           [cell.usermini sd_setImageWithURL:[NSURL URLWithString:profilePath]];
           return cell;

       } else {
             sidebarCell *cell = (sidebarCell *)[tableView dequeueReusableCellWithIdentifier:@"sidebarCell"];
             NSDictionary *userName = [self.neighbourData objectAtIndex:indexPath.row];
             [[cell username] setText:[userName objectForKey:@"first name"]];
              NSDictionary *userlast = [self.neighbourData objectAtIndex:indexPath.row];
              [[cell lastName] setText:[userlast objectForKey:@"last name"]];
              NSDictionary *userBio = [self.neighbourData objectAtIndex:indexPath.row];
              [[cell userDescription] setText:[userBio objectForKey:@"userbio"]];
              NSString *profilePath = [[self.neighbourData objectAtIndex:indexPath.row] objectForKey:@"photo_path"];
              [cell.usermini sd_setImageWithURL:[NSURL URLWithString:profilePath]];
              NSLog(@"This is profilePath %@",profilePath);
      }
       /*UITableViewCell *cell;
       return cell;*/ Never put this line in your code otherwise your tableview cell its nil
  }
   - (IBAction)segmentControl:(id)sender {

        UISegmentedControl *segmentedControl = (UISegmentedControl *) sender;
        NSInteger selectedSegment = segmentedControl.selectedSegmentIndex;

        switch (selectedSegment)
        {
             case 0:
                   [self.sidetableView setHidden:NO];
                   [self.neighboursView setHidden:YES];
                   [self.friendsView setHidden:YES];

                    NSLog(@"Requests!");
                    break;
             case 1: //FRIENDS MAP VIEW

                  [self.sidetableView setHidden:YES];
                  [self.friendsView setHidden:NO];
                  [self.neighboursView setHidden:YES];
                  break;
             case 2:

                  [self.sidetableView setHidden:YES];
                  [self.neighboursView setHidden:NO];
                  [self.friendsView setHidden:YES];
                  break;
          }
   }

当然，您的第三个tableview不能加载单元格…您错过了

返回单元格在第三个IF语句中…
尝试以下方法
- (NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{

    int numberOfRows; // this variable for return number of cell return 
    // here check your table 
    if (tableView == self.sidetableView) {

          numberOfRows  = [self.myFriendData count];
    }else if (tableView == self.friendsView) {

          numberOfRows =  [self.friendData count];
    }else if (tableView == self.neighboursView) {

          numberOfRows  =  [self.neighbourData count];
    }else {
          numberOfRows = 0;   
    }
    return numberOfRows;

}

回答编辑您的代码
ViewController.h
- (IBAction)segmentControl:(id)sender;
@property (weak, nonatomic) IBOutlet UISegmentedControl *segmentControl;
@property (weak, nonatomic) IBOutlet UITableView *sidetableView;
@property (strong, nonatomic) NSMutableArray *myFriendData;
@property (weak, nonatomic) IBOutlet UITableView *neighboursView;
@property (strong, nonatomic) NSMutableArray *friendData;
@property (strong, retain) NSMutableArray *neighbourData;

@property (strong, nonatomic) IBOutlet UITableView *friendsView;

- (IBAction)segmentControl:(id)sender;
@property (weak, nonatomic) IBOutlet UISegmentedControl *segmentControl;
@property (weak, nonatomic) IBOutlet UITableView *sidetableView;
@property (strong, nonatomic) NSMutableArray *myFriendData;
@property (weak, nonatomic) IBOutlet UITableView *neighboursView;
@property (strong, nonatomic) NSMutableArray *friendData;
@property (strong, retain) NSMutableArray *neighbourData;

我更喜欢使用弱
引用，而不是强

@property (weak, nonatomic) IBOutlet UITableView *friendsView;

ViewController.m
- (void)viewDidLoad {
        [super viewDidLoad];
         UINib *nib = [UINib nibWithNibName:@"sidebarCell" bundle:nil];
        [self.friendsView registerNib:nib forCellReuseIdentifier: @"sidebarCell"];
        nib = [UINib nibWithNibName:@"MyFriendTableViewCell" bundle:nil];
        [self.sidetableView registerNib:nib forCellReuseIdentifier: @"MyFriendTableViewCell"];
        nib = [UINib nibWithNibName:@"sidebarCell" bundle:nil];
        [self.neighboursView registerNib:nib forCellReuseIdentifier: @"sidebarCell"];
 }

- (NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    if (tableView == self.sidetableView) {
        if ([self.myFriendData count] > 0) {
            return [self.myFriendData count];
        } else {
             return 0;
        }
    }
    if (tableView == self.friendsView) {
        if ([self.friendData count] > 0) {
            return [self.friendData count];

        } else {
            return 0;
          } 
    }
     else {

      //  return [self.neighbourData count];

    }
    return 0;

}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
       if (tableView == self.sidetableView) {
              self.sidetableView.separatorStyle = UITableViewCellSeparatorStyleNone;
             MyFriendTableViewCell *cell = (MyFriendTableViewCell *)[tableView dequeueReusableCellWithIdentifier:@"MyFriendTableViewCell"];
             NSDictionary *friendsName = [self.myFriendData objectAtIndex:indexPath.row];
            [[cell friendName] setText:[friendsName objectForKey:@"title"]];
            NSDictionary *friendsBio = [self.myFriendData objectAtIndex:indexPath.row];
            [[cell friendBio] setText:[friendsBio objectForKey:@"field_friendbio"][@"und"][0][@"safe_value"]];
            NSString *profilePath = [[self.myFriendData objectAtIndex:indexPath.row] objectForKey:@"field_picture"][@"und"][0][@"safe_value"];
           [cell.friendPic sd_setImageWithURL:[NSURL URLWithString:profilePath]];
           NSLog(@"This is profilePath %@",profilePath);
           return cell;
     }
     if (tableView == self.friendsView)
     {
            self.friendsView.separatorStyle = UITableViewCellSeparatorStyleNone;
            sidebarCell *cell = (sidebarCell *)[tableView dequeueReusableCellWithIdentifier:@"sidebarCell"];
            NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"sidebarCell" owner:self options:nil];
           cell = [nib objectAtIndex:0];
           NSDictionary *userName = [self.friendData objectAtIndex:indexPath.row];
           [[cell username] setText:[userName objectForKey:@"node_title"]];

           NSDictionary *userBio = [self.friendData objectAtIndex:indexPath.row];
           [[cell userDescription] setText:[userBio objectForKey:@"body"]];
           NSString *profilePath = [[self.friendData objectAtIndex:indexPath.row] objectForKey:@"friendphoto"];
           [cell.usermini sd_setImageWithURL:[NSURL URLWithString:profilePath]];
           return cell;

       } else {
             sidebarCell *cell = (sidebarCell *)[tableView dequeueReusableCellWithIdentifier:@"sidebarCell"];
             NSDictionary *userName = [self.neighbourData objectAtIndex:indexPath.row];
             [[cell username] setText:[userName objectForKey:@"first name"]];
              NSDictionary *userlast = [self.neighbourData objectAtIndex:indexPath.row];
              [[cell lastName] setText:[userlast objectForKey:@"last name"]];
              NSDictionary *userBio = [self.neighbourData objectAtIndex:indexPath.row];
              [[cell userDescription] setText:[userBio objectForKey:@"userbio"]];
              NSString *profilePath = [[self.neighbourData objectAtIndex:indexPath.row] objectForKey:@"photo_path"];
              [cell.usermini sd_setImageWithURL:[NSURL URLWithString:profilePath]];
              NSLog(@"This is profilePath %@",profilePath);
      }
       /*UITableViewCell *cell;
       return cell;*/ Never put this line in your code otherwise your tableview cell its nil
  }
   - (IBAction)segmentControl:(id)sender {

        UISegmentedControl *segmentedControl = (UISegmentedControl *) sender;
        NSInteger selectedSegment = segmentedControl.selectedSegmentIndex;

        switch (selectedSegment)
        {
             case 0:
                   [self.sidetableView setHidden:NO];
                   [self.neighboursView setHidden:YES];
                   [self.friendsView setHidden:YES];

                    NSLog(@"Requests!");
                    break;
             case 1: //FRIENDS MAP VIEW

                  [self.sidetableView setHidden:YES];
                  [self.friendsView setHidden:NO];
                  [self.neighboursView setHidden:YES];
                  break;
             case 2:

                  [self.sidetableView setHidden:YES];
                  [self.neighboursView setHidden:NO];
                  [self.friendsView setHidden:YES];
                  break;
          }
   }

我想您可能在numberOfRowsInSection
中没有返回数组的计数。我注意到另一个缺少的东西，您没有在cellforrowatinexpath
中为您的邻居视图返回cell

- (void)viewDidLoad {
        [super viewDidLoad];
        //remove un-necessary code
        UINib *nib = [UINib nibWithNibName:@"sidebarCell" bundle:nil];
        [self.friendsView registerNib:nib forCellReuseIdentifier: @"sidebarCell"];
        [self.neighboursView registerNib:nib forCellReuseIdentifier: @"sidebarCell"];
        nib = [UINib nibWithNibName:@"MyFriendTableViewCell" bundle:nil];
        [self.sidetableView registerNib:nib forCellReuseIdentifier: @"MyFriendTableViewCell"];
 }

- (NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    if (tableView == self.sidetableView) {
        if ([self.myFriendData count] > 0) {
            return [self.myFriendData count];
        } else {
             return 0;
        }
    }
    if (tableView == self.friendsView) {
        if ([self.friendData count] > 0) {
             return [self.friendData count];

        } else {
            return 0;
        } 
    }
     else {
      //Are you forgetting un-commenting this??
      //  return [self.neighbourData count];
      return [self.neighbourData count];

    }
    return 0;

}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
       if (tableView == self.sidetableView) {
             self.sidetableView.separatorStyle = UITableViewCellSeparatorStyleNone;
             MyFriendTableViewCell *cell = (MyFriendTableViewCell *)[tableView dequeueReusableCellWithIdentifier:@"MyFriendTableViewCell"];
             NSDictionary *friendsName = [self.myFriendData objectAtIndex:indexPath.row];
             [[cell friendName] setText:[friendsName objectForKey:@"title"]];
             NSDictionary *friendsBio = [self.myFriendData objectAtIndex:indexPath.row];
             [[cell friendBio] setText:[friendsBio objectForKey:@"field_friendbio"][@"und"][0][@"safe_value"]];
             NSString *profilePath = [[self.myFriendData objectAtIndex:indexPath.row] objectForKey:@"field_picture"][@"und"][0][@"safe_value"];
             [cell.friendPic sd_setImageWithURL:[NSURL URLWithString:profilePath]];
             NSLog(@"This is profilePath %@",profilePath);
             return cell;
     }
     if (tableView == self.friendsView)
     {
            self.friendsView.separatorStyle = UITableViewCellSeparatorStyleNone;
            sidebarCell *cell = (sidebarCell *)[tableView dequeueReusableCellWithIdentifier:@"sidebarCell"];
            NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"sidebarCell" owner:self options:nil];
            cell = [nib objectAtIndex:0];
            NSDictionary *userName = [self.friendData objectAtIndex:indexPath.row];
            [[cell username] setText:[userName objectForKey:@"node_title"]];

            NSDictionary *userBio = [self.friendData objectAtIndex:indexPath.row];
            [[cell userDescription] setText:[userBio objectForKey:@"body"]];
            NSString *profilePath = [[self.friendData objectAtIndex:indexPath.row] objectForKey:@"friendphoto"];
            [cell.usermini sd_setImageWithURL:[NSURL URLWithString:profilePath]];
            return cell;

       } else {
            sidebarCell *cell = (sidebarCell *)[tableView dequeueReusableCellWithIdentifier:@"sidebarCell"];
            NSDictionary *userName = [self.neighbourData objectAtIndex:indexPath.row];
            [[cell username] setText:[userName objectForKey:@"first name"]];
            NSDictionary *userlast = [self.neighbourData objectAtIndex:indexPath.row];
            [[cell lastName] setText:[userlast objectForKey:@"last name"]];
            NSDictionary *userBio = [self.neighbourData objectAtIndex:indexPath.row];
            [[cell userDescription] setText:[userBio objectForKey:@"userbio"]];
            NSString *profilePath = [[self.neighbourData objectAtIndex:indexPath.row] objectForKey:@"photo_path"];
            [cell.usermini sd_setImageWithURL:[NSURL URLWithString:profilePath]];
            NSLog(@"This is profilePath %@",profilePath);

            // are you forgetting to return cell?
            return cell;
      }
  }
   - (IBAction)segmentControl:(id)sender {

        UISegmentedControl *segmentedControl = (UISegmentedControl *) sender;
        NSInteger selectedSegment = segmentedControl.selectedSegmentIndex;

        switch (selectedSegment)
        {
             case 0:
                   [self.sidetableView setHidden:NO];
                   [self.neighboursView setHidden:YES];
                   [self.friendsView setHidden:YES];

                    NSLog(@"Requests!");
                    break;
             case 1: //FRIENDS MAP VIEW

                  [self.sidetableView setHidden:YES];
                  [self.friendsView setHidden:NO];
                  [self.neighboursView setHidden:YES];
                  break;
             case 2:

                  [self.sidetableView setHidden:YES];
                  [self.neighboursView setHidden:NO];
                  [self.friendsView setHidden:YES];
                  break;
      }
}

我在我的第三个if语句中添加了返回单元格，但仍然得到一个空白的tableView:/为什么你发布了两个答案？请删除一行。在cellforrowatindexpath方法中添加这些行。else部分sidebarCell*单元格=（sidebarCell*）[tableView dequeueReusableCellWithIdentifier:@“sidebarCell]”；NSArray*nib=[[NSBundle mainBundle]loadNibNamed:@“sidebarCell”所有者：自选项：nil]；单元格=[nib objectAtIndex:0]；UINib*nib=[UINib-nibWithNibName:@“sidebarCell”bundle:nil]；[self.friendsView registerNib:nib forCellReuseIdentifier:@“sidebarCell”]；UINib*nib1=[UINib-nibWithNibName:@“MyFriendTableViewCell”包：无]；[self.sidetableView注册表项nb:nib1强制重用标识符：@“MyFriendTableViewCell”]；UINib*nib2=[UINib-nibWithNibName:@“sidebarCell”bundle:nil]；[self.neighboursView注册表项nb:nib2强制重用标识符：@“sidebarCell”]；更改此选项并运行