Question

我正在构建一个应用程序，它使用以编程方式生成的UITableView来弹出并填充UITextField。当用户触摸UITextField时，应弹出有效值的TableView。 UITableView包含部分和搜索栏。我从我写的另一个非常类似的应用程序中获取了代码，它可以正常工作。

当触摸UITextField时，执行从UITableView（CatagoryTableViewController.m）开始，但只调用init方法，然后控制返回到调用类（{{1 }}）。我已经覆盖了UITextField的关键弹出窗口。

ViewController.m 有一个XIB，但 ViewController 没有。 UITextField Touch Down映射到 CatagoryTableViewController 方法。

顺便说一句，SFCLog定义为：

catagoryFieldPressed

我在define SFCLog(FORMAT, ...) fprintf(stderr,"%s [line %d] %s\n",__PRETTY_FUNCTION__, __LINE__,[[NSString stringWithFormat:FORMAT, ##__VA_ARGS__] UTF8String])中的每个方法的开头放置了SFCLog日志（NSLog的变体），并且只调用了init。关于我缺少的任何想法？

来自CatagoryTableViewController （调用类标题）

ViewController.h

来自@interface ViewController : UIViewController <UITextFieldDelegate> { Word *currentWord; NSMutableArray *words; int wordsIndex; int viewState; int correctCounter; int incorrectCounter; } （通话类）

ViewController.m

-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField { SFCLog(@""); return NO; // Hide both keyboard and blinking cursor. } - (IBAction)catagoryFieldPressed:(id)sender { SFCLog(@"Catagory button"); CatagoryTableViewController *childView = [[CatagoryTableViewController alloc] init]; childView.parentView = self; [self.navigationController pushViewController:childView animated:YES]; SFCLog(@"Returned from Catagory button"); }

CatagoryTableViewController.h

@class ViewController; @interface CatagoryTableViewController : UITableViewController <UISearchBarDelegate> { NSMutableDictionary *catagoryDictionary; NSArray *filteredArray; UISearchBar *searchBar; UISearchDisplayController *searchController; NSMutableArray *sectionArray; } @property (nonatomic, weak) ViewController *parentView; 比此更多的代码，但这些方法应该触发。

CatagoryTableViewController.m

调试控制台输出

@implementation CatagoryTableViewController
@synthesize parentView;


- (id) init
{
    SFCLog(@"");
    if ((self = [super init]))
    {
        SFCLog(@"in here");        
    }
    SFCLog(@"");
    return self;
}


- (void)viewDidLoad
{
    SFCLog(@"");
    [super viewDidLoad];
}

-(void)loadView
{
    SFCLog(@"load view");
    [super loadView];
    self.navigationItem.hidesBackButton = TRUE;

    // Load the catagory dictionary from the database
    WordService *wordService = [[WordService alloc] init];
    NSMutableArray *rawCatagories = [wordService getCatagories];
    catagoryDictionary = [NSMutableDictionary dictionary];
    for (WordCatagory *wordCatagory in rawCatagories) {
        [catagoryDictionary setObject:wordCatagory forKey:wordCatagory.wordCatagory];
    }

    // Section Array
    sectionArray = [NSMutableArray array];
    for (int i = 0; i < 26; i++)
        [sectionArray addObject:[self itemsInSection:i]];
    SFCLog(@"sectionArray: %@",sectionArray);


    // Create a search bar
    searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 320.0f, 44.0f)];
    searchBar.autocorrectionType = UITextAutocorrectionTypeNo;
    searchBar.autocapitalizationType = UITextAutocapitalizationTypeNone;
    searchBar.keyboardType = UIKeyboardTypeAlphabet;
    self.tableView.tableHeaderView = searchBar;

    // Create the search display controller
    searchController = [[UISearchDisplayController alloc] initWithSearchBar:searchBar contentsController:self];
    searchController.searchResultsDataSource = self;
    searchController.searchResultsDelegate = self;   
}

根据Phillip Mills的帖子添加NSLog后编辑的调试控制台输出。

 [ViewController catagoryFieldPressed:] [line 223] Catagory button
 [CatagoryTableViewController init] [line 18] 
 [CatagoryTableViewController init] [line 21] in here
 [CatagoryTableViewController init] [line 23] 
 [ViewController catagoryFieldPressed:] [line 227] Returned from Catagory button
 [ViewController textFieldShouldBeginEditing:] [line 33]

在AppDelegate.m之前

-[ViewController catagoryFieldPressed:] [line 223] Catagory button
-[CatagoryTableViewController init] [line 18] 
-[CatagoryTableViewController init] [line 21] in here
-[CatagoryTableViewController init] [line 23] 
-[CatagoryTableViewController loadView] [line 171] load view
2012-06-04 18:52:57.930 Fluent[1835:f803] Opened database
2012-06-04 18:52:57.930 Fluent[1835:f803] Path: /Users/sean/Library/Application Support/iPhone Simulator/5.1/Applications/8B93174F-8836-4533-BCFF-F98AC2F34F26/Documents/fluent_tr.sqlite
-[WordService getCatagories] [line 114] 
-[CatagoryTableViewController itemsInSection:] [line 46] 
(edited repeating NSLogs to shorten)
-[CatagoryTableViewController firstLetter:] [line 39] 
-[CatagoryTableViewController numberOfSectionsInTableView:] [line 99] 
-[CatagoryTableViewController tableView:titleForHeaderInSection:] [line 86] 
-[CatagoryTableViewController firstLetter:] [line 39] 
-[CatagoryTableViewController tableView:numberOfRowsInSection:] [line 108] 
2012-06-04 18:52:57.937 Fluent[1835:f803] Rows per section count: 1
-[CatagoryTableViewController viewDidLoad] [line 31] 
2012-06-04 18:52:57.938 Fluent[1835:f803] Controller: <CatagoryTableViewController: 0x884c880>, View: <UITableView: 0xbb90a00; frame = (0 20; 320 460); clipsToBounds = YES; autoresize = W+H; layer = <CALayer: 0x884ce20>; contentOffset: {0, 0}>
-[ViewController catagoryFieldPressed:] [line 228] Returned from Catagory button
-[ViewController textFieldShouldBeginEditing:] [line 33]

AppDelegate.m

之后

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

    UIViewController *viewController = [[ViewController alloc] initWithNibName:@"ViewController" bundle:nil];
    UIViewController *numberTestViewController = [[ViewController alloc] initWithNibName:@"NumberTestViewController" bundle:nil];

    UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:viewController];
    nav.tabBarItem.title = @"Words";
    self.tabBarController = [[UITabBarController alloc] init];
    self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController,numberTestViewController, nil];
    self.tabBarController.delegate = self;
    self.window.rootViewController = self.tabBarController;
    [self.window makeKeyAndVisible];
    return YES;
}

Answer 1

在Phillip Mills的帮助下发现了这个问题。调用UITableView的视图控制器未正确添加到导航堆栈中。它已被实例化，然后通过UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:viewController];添加到navigationController，但导航控制器本身未正确添加到tabBarController。

请参阅上面的AppDelegate.m之前和之后的版本。

感谢Phillip的帮助。

UITableView子类不执行过去的init

1 个答案: