Question

在我的应用程序中，有一个导航视图（嵌入式），一个表视图控制器和一个视图控制器。在ViewController.h中，有......

@property (strong, nonatomic) IBOutlet UILabel *timeDisplay;
@property (strong, nonatomic) IBOutlet UILabel *minuteDisplay;
@property (strong, nonatomic) IBOutlet UILabel *timerDisplay;
@property (strong, nonatomic) IBOutlet UILabel *titleLabel;

以及更多网点。下面的代码是TableViewController.m文件。我有一个动作按钮（plusbtn），需要在表格视图中添加一个单元格。所以，我试图让'plusbtn'做到这一点，但它没有用。我该怎么办？请帮帮我......

#import "TableViewController.h"

#import "TableViewCell.h"

#import "ViewController.h"

@interface TableViewController ()

@property (nonatomic) ViewController *viewController;
@property (strong, nonatomic) NSMutableArray *titleArray;
@property (strong, nonatomic) NSMutableArray *tsArray;
@property (strong, nonatomic) NSMutableArray *tmArray;
@property (strong, nonatomic) NSMutableArray *ttArray;
@property (strong, nonatomic) NSString *cellplustitle;
@property (strong, nonatomic) NSString *cellplustime;
@property (strong, nonatomic) NSString *cellplusmin;
@property (strong, nonatomic) NSString *cellplussec;

@end

@implementation TableViewController

- (id)initWithStyle:(UITableViewStyle)style
{
    self = [super initWithStyle:style];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    _cellplustitle = self.viewController.titleLabel.text;
    _cellplustime = self.viewController.timeDisplay.text;
    _cellplusmin = self.viewController.minuteDisplay.text;
    _cellplussec = self.viewController.timerDisplay.text;
    self.titleArray = [NSMutableArray new];
    self.tsArray = [NSMutableArray new];
    self.tmArray = [NSMutableArray new];
    self.ttArray = [NSMutableArray new];

    // Uncomment the following line to preserve selection between presentations.
    // self.clearsSelectionOnViewWillAppear = NO;

    // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
    // self.navigationItem.rightBarButtonItem = self.editButtonItem;
}

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

#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    // Return the number of sections.
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    // Return the number of rows in the section.
    return self.titleArray.count;
}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    TableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"TableViewCell" forIndexPath:indexPath];
    cell.accessoryType = UITableViewCellAccessoryNone;
    cell.celltitle.text = [self.titleArray objectAtIndex:indexPath.row];
    cell.cellmd.text = [self.tmArray objectAtIndex:indexPath.row];
    cell.cellsd.text = [self.tsArray objectAtIndex:indexPath.row];
    cell.celltd.text = [self.ttArray objectAtIndex:indexPath.row];

    // Configure the cell...

    return cell;
}


/*
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
    // Return NO if you do not want the specified item to be editable.
    return YES;
}
*/

/*
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        // Delete the row from the data source
        [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
    } else if (editingStyle == UITableViewCellEditingStyleInsert) {
        // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
    }   
}
*/

/*
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath
{
}
*/

/*
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
    // Return NO if you do not want the item to be re-orderable.
    return YES;
}
*/

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

- (IBAction)plusbtn:(id)sender {
    [self.tableView beginUpdates];

    [self.titleArray addObject:self.cellplustitle];
    [self.tsArray addObject:self.cellplussec];
    [self.tmArray addObject:self.cellplusmin];
    [self.ttArray addObject:self.cellplustime];
    NSIndexPath *indexPathOfNewItem = [NSIndexPath indexPathForRow:(self.titleArray.count - 1) inSection:0];
                         [self.tableView insertRowsAtIndexPaths:@[indexPathOfNewItem] withRowAnimation:UITableViewRowAnimationAutomatic];

                         [self.tableView endUpdates];
                         [self.tableView scrollToRowAtIndexPath:indexPathOfNewItem atScrollPosition:UITableViewScrollPositionBottom animated:YES];
}
@end

Answer 1

ReloadData应该可以工作。如果你把它放在beginUpdate和endupdate之间它不起作用，那么注释rest代码并在数组中添加item后简单地尝试重新加载表视图。喜欢......

- (IBAction)plusbtn:(id)sender {
[self.titleArray addObject:self.cellplustitle];
[self.tsArray addObject:self.cellplussec];
[self.tmArray addObject:self.cellplusmin];
[self.ttArray addObject:self.cellplustime];
[self.tableview reloadData];}

希望这有帮助吗？

Answer 2

您必须使用

重新加载uitableview

[self.tableView reloadData];

希望它有所帮助！

在表视图控制器中添加单元格

2 个答案: