Question

我的问题是我无法更新我的表，我用NSMutableDictionary填充了表，我设法添加一个带有plusSign的UITabBarButton，用一个带有textFields的新视图。新对象添加到Dictionary /数组我可以看到[arrayKA count]已经变为+1，但tableView永远不会更新。我一直在尝试使用[self.tableView relodData]，但我得到一个警告“属性TableView未在类型为FourthViewController的对象上找到”

TableView中设置的类是我发布的类。一切都很好用，直到我开始将项目添加到我的表

如果能得到一些帮助，我会很高兴。

哦......还有一件事，我在“addView”中使用与类相同的类我觉得它很丑，但这是最简单的方法，对吧？：）

  //
//  FourthViewController.m


    #import "FourthViewController.h"
    #import "DetailViewController.h"

@implementation FourthViewController



    @synthesize textField_newKA_name = _textField_newKA_name;



    - (void)didReceiveMemoryWarning
    {
        [super didReceiveMemoryWarning];
    // Release any cached data, images, etc that aren't in use.
}

    #pragma mark - View lifecycle

    - (void)viewDidLoad
{




    [self setupArray];


        self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(addTapped:)];


    [super viewDidLoad];
}

/*
    -(void)viewWillAppear:(BOOL)animated{


    [self.tableView reloadData]; <--cannot write this =(
}
 */

    - (void)addTapped:(id)sender
{

    // push the new view -  The AddNewKaView

    FourthViewController *pushNewKA = [self.storyboard instantiateViewControllerWithIdentifier:@"newKA"];
    [self.navigationController pushViewController:pushNewKA animated:YES];  
    pushNewKA.title = @"adding a new KA";



   }

        - (IBAction)saveNewKA:(id)sender {


    NSMutableDictionary * newKA = [[NSMutableDictionary alloc] init ];
    [newKA setObject:self.textField_newKA_name forKey:@"name"]; 


    [arrayKA addObject:newKA]; // adding the newKA to the arrayKA




}
- (void)setupArray {

arrayKA   = [[NSMutableArray alloc] init];

NSMutableDictionary *kaliber1 = [[NSMutableDictionary alloc] init];
[kaliber1 setObject:@"AK1" forKey:@"name"];
[kaliber1 setObject:@"ak1.jpg" forKey:@"image"];

[arrayKA addObject:kaliber1];
    - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return 1;
}

    - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return [arrayKA count];
}

    - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
    }

  //population the Table from arrayKA, right?

    cell.textLabel.text  = [[arrayKA objectAtIndex:indexPath.row] objectForKey:@"name"];
    if ([UIImage imageNamed:[[arrayKA objectAtIndex:indexPath.row] objectForKey:@"image"]] != nil) {
        cell.imageView.image = [UIImage imageNamed:[[arrayKA objectAtIndex:indexPath.row] objectForKey:@"image"]];
    }
    else //Missing picture 
    {
        cell.imageView.image = [UIImage imageNamed:@"ra3Rocket.jpg"];
    }



    return cell;    
}





    - (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (editingStyle == UITableViewCellEditingStyleDelete){
        [arrayKA removeObjectAtIndex:indexPath.row];
        [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]  withRowAnimation:UITableViewRowAnimationFade];
    }


}

    - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *__strong)indexPath {


        DetailViewController *detail = [self.storyboard instantiateViewControllerWithIdentifier:@"modulKA"];
        [self.navigationController pushViewController:detail animated:YES];

        detail.titleField.text = [[arrayKA objectAtIndex:indexPath.row] objectForKey:@"name"];
        detail.title = [[arrayKA objectAtIndex:indexPath.row] objectForKey:@"name"];
        detail.textField_KA_initialhast.text = [[arrayKA objectAtIndex:indexPath.row] objectForKey:@"InitialHastKula"];



    NSString *ValtVapensKulDiameter =  [[arrayKA objectAtIndex:indexPath.row] objectForKey:@"kulDiameter"];
    NSString *ValtVapensKulaTalB =  [[arrayKA objectAtIndex:indexPath.row] objectForKey:@"TalB"];
    NSString *ValtVapensKulInitialHast =  [[arrayKA objectAtIndex:indexPath.row] objectForKey:@"InitialHastKula"];

     ValtVapensKulDiameterNUM      = ([ValtVapensKulDiameter floatValue]       ); 
     ValtVapensKulaTalBNUM         = ([ValtVapensKulaTalB floatValue]          ); 
     ValtVapensKulInitialHastNUM   = ([ValtVapensKulInitialHast floatValue]    ); 



    [[arrayKA objectAtIndex:indexPath.row] objectForKey:@"kulDiameter"];




}


    - (void)viewDidUnload
{
    [super viewDidUnload];
}


    - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}

@end

我在互联网上找到了这些线路的想法：

 NSIndexPath *indexPath = [NSIndexPath indexPathForRow: arrayKA.count-1 inSection:0];
    NSArray     *indexPaths = [NSArray arrayWithObject:indexPath];
    [self.tableView insertRowAtIndexPaths:indexPaths withRowAnimation:YES];

也许我会用它来为我的newKA在数组中“腾出空间”，但我仍然无法写[self.tableView....

无法更新TableView，甚至无法使用[self.tableView reloadData]

0 个答案: