Question

我在将数据从展开的segue中转换为NSMutableArray对象时遇到了一些麻烦。当我从unwind segue中执行NSLog时，它会显示信息存在，它不会在我的数组中最终显示在表视图中。我的问题是什么？谢谢大家。

#import "ChoicesViewController.h"
#import "MyDataChoices.h"
#import "AddChoiceViewController.h"

@interface ChoicesViewController () <UITableViewDelegate,UITableViewDataSource>

@property (weak, nonatomic) IBOutlet UITableView *myTableView;
@property (strong, nonatomic) NSMutableArray *arrayNames;
@property (strong, nonatomic) NSArray *sections;
@end

@implementation ChoicesViewController


- (void)viewDidLoad
{
    [super viewDidLoad];
    self.myTableView.delegate = self;
    self.myTableView.dataSource = self;
    self.sections = [NSArray arrayWithObjects:@"A", @"B", @"C", @"D", @"E", @"F", @"G", @"H", @"I", @"J", @"K", @"L", @"M", @"N", @"O", @"P", @"Q", @"R", @"S", @"T", @"U", @"V,", @"W", @"X", @"Y", @"Z", nil];

    self.arrayNames = [[NSMutableArray alloc] init];
    [self.arrayNames addObjectsFromArray:@[
                                         [MyDataChoices itemWithNewName:@"Apples"],
                                         [MyDataChoices itemWithNewName:@"Bread"]]];
}

- (IBAction)unwindSegueToChoices:(UIStoryboardSegue *)segue
{

    AddChoiceViewController *sourceVC = segue.sourceViewController;
    NSString *myNewItem = sourceVC.myTextField.text;
    //NSString *myFinalString = [[myNewItem substringToIndex:1] capitalizedString];
    NSString *capitalizedString = [myNewItem capitalizedString];
    NSLog(capitalizedString);
    //Why will this not work?
    [self.arrayNames addObject:capitalizedString];

}

-(NSInteger) numberOfSectionsInTableView:(UITableView *) tableView
{
    return 1;
}

-(NSInteger) tableView:(UITableView *) tableView numberOfRowsInSection:(NSInteger)section
{
    return self.arrayNames.count;
}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    MyDataChoices *currentRow = self.arrayNames[indexPath.row];
    UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:@"mainCell2" forIndexPath:indexPath];

    cell.textLabel.text = currentRow.myNameChoices;
    return cell;
}

Answer 1

在将新项添加到数组后，您需要重新加载表视图：

[self.tableView reloadData];

将Segue放入NSMutableArray中

1 个答案: