Question

我正在使用表格视图来显示不同的联系信息，根据您选择的那个，将会有该特定资源的详细信息。我有代码工作，但我移动了项目，所以我不确定为什么我的标签没有出现。我有一个状态联系人列表，然后你推一个导致细节。这是我的代码：

StateContacts.h

#import <UIKit/UIKit.h>

@interface StateContacts : UITableViewController <UITableViewDelegate,
UITableViewDataSource>
@property (nonatomic, strong) IBOutlet UITableView *tableView;
@end

StateContacts.m

#import "StateContacts.h"
#import "State.h"

@interface StateContacts ()

@end

@implementation StateContacts 
{
    NSArray *state;
    NSArray *num;
    NSArray *fax;
}

@synthesize tableView;

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Initialize table data
    state = [NSArray arrayWithObjects:@"Child Abuse Hotline", @"Drug Lab Remediation", @"Prevent Suicide TN", @"TN Crime Vict. Comp.", @"TN Department of Education", @"TN Homeland Security", @"TN State Police", @"TN Supreme Court", nil];
    num = [NSArray arrayWithObjects:@"(111) 111-1111", @"(222) 222-2222", @"(333) 333-3333", @"(444) 444-4444", @"(555) 555-5555", @"(666) 666-6666", @"(777) 777-7777", @"(888) 888-8888", nil];
    fax = [NSArray arrayWithObjects:@"n/a", @"n/a", @"n/a", @"n/a", @"n/a", @"n/a", @"n/a", @"n/a", nil];
}


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

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

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

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

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];

    if (cell == nil) 
    {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
    }

    cell.textLabel.text = [state objectAtIndex:indexPath.row];
    return cell;
}


- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender 
{
    if ([segue.identifier isEqualToString:@"showStateInfo"]) 
    {
        NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
        State *destViewController = segue.destinationViewController;
        destViewController.stateName = [state objectAtIndex:indexPath.row];
        destViewController.pName = [num objectAtIndex:indexPath.row];
        destViewController.fName = [fax objectAtIndex:indexPath.row];
    }
}
@end

State.h

#import <UIKit/UIKit.h>

@interface State : UIViewController

@property (nonatomic, strong) IBOutlet UILabel *stateLabel;
@property (nonatomic, strong) IBOutlet UILabel *pNumber;
@property (nonatomic, strong) IBOutlet UILabel *fNumber;
@property (nonatomic, strong) NSString *stateName;
@property (nonatomic, strong) NSString *pName;
@property (nonatomic, strong) NSString *fName;

@end

State.m

#import "State.h"

@interface State ()

@end

@implementation State

@synthesize stateLabel;
@synthesize stateName;
@synthesize pNumber;
@synthesize fNumber;
@synthesize pName;
@synthesize fName;

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

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Set the Label text
    stateLabel.text = stateName;
    //number and fax in array
    pNumber.text = pName;
    fNumber.text = fName;
}

- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
}

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

@end

我知道很多人以前都遇到过这个问题，我已经尝试了他们的建议，例如确保segue正确连接以及清理和重建。标签仍然没有出现。我的层次结构与UIView是正确的。 Here是我的故事板以及状态详细信息和StateContacts的连接。我只是不知道还有什么可以尝试。

Answer 1

您的代码错误地定义了一个tableView属性，该属性隐藏了从UITableView继承的原始tableView属性。要解决此问题，只需删除属性和相应的@synthesize指令即可。在您熟悉它的同时，您还可以删除State类中的@synthesize指令，因为编译器现在默认自动合成属性。

请注意，一旦删除了冗余插座，您可能需要在Interface Builder中重新连接它，因此请务必仔细检查。

如何从标签中显示我的文字？

1 个答案: