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iOS Multiple UIPickerView не показывает массивы

#ios #arrays #uipickerview

#iOS #массивы #uipickerview

Вопрос:

У меня есть скрытый UIPickerView, который должен отображать другой массив в зависимости от того, какая кнопка нажата. Вид средства выбора отображается при нажатии кнопки, но по какой-то причине он не показывает массивы в виде средства выбора. Я был бы чрезвычайно благодарен за любую помощь!!!!

Вот файл .m:

 #import "ViewController.h"
#import <MessageUI/MessageUI.h>
#import <MessageUI/MFMailComposeViewController.h>

#define GeoLocation TRUE // FALSE for no latitude/longitude information
#define kPICKERCOLUMN 1
typedef NS_ENUM(NSInteger, PickerType) {
    CATEGORY_PICKER,
    LOCATION_PICKER,
    ORIGINATOR_PICKER,
    DESTINATION_PICKER,
    STATUS_PICKER
};

#define kPICKERCOLUMN 1
#define kPICKER_TAG     101

@interface ViewController ()

@end

@implementation ViewController
{
    UIPickerView *picker;
    PickerType pickerType;
}
@synthesize nameTextField, emailTextField, dateTextField, timeTextField, blankTextField, blankbTextField, mlabelcategory, messageTextView, categoryTypeBtn;
@synthesize name, emailaddress, date, time, blank, blankb, category, message, email, button;

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
        categoryTypes = [[NSArray alloc] initWithObjects:@"Appetizers",@"Breakfast",@"Dessert",@"Drinks",
                         @"Main Dish/Entree", @"Salad", @"Side Dish", @"Soup", @"Snack",
                         @"Baby Food", @"Pet Food",nil];

        locationTypes = [[NSArray alloc] initWithObjects:@"African",@"American",@"Armenian",@"Barbecue"
                         ,nil];

        originatorTypes = [[NSArray alloc] initWithObjects:@"African",@"American",@"Armenian",@"Barbecue",
                           nil];


        destinationTypes = [[NSArray alloc] initWithObjects:@"African",@"American",@"Armenian",@"Barbecue",
                            nil];


        statusTypes = [[NSArray alloc] initWithObjects:@"African",@"American",@"Armenian",@"Barbecue",
                       nil];
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.



    nameTextField.text = nil;
    emailTextField.text = nil;
    dateTextField.text = nil;
    timeTextField.text = nil;
    blankTextField.text = nil;
    blankbTextField.text = nil;
    mlabelcategory.text = nil;
    messageTextView.text = nil;

    picker = [[UIPickerView alloc] initWithFrame:CGRectMake(100,100,400,160)];
    picker.showsSelectionIndicator = TRUE;
    picker.dataSource = self;
    picker.delegate = self;
    picker.hidden = YES;
    [self.view addSubview:picker];
}


/*
 // Override to allow orientations other than the default portrait orientation.
 - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
 // Return YES for supported orientations.
 return (interfaceOrientation == UIInterfaceOrientationPortrait);
 }
 */
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)eve
{
    picker.hidden = YES;
}

#pragma mark -
#pragma mark picker methods
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
    return kPICKERCOLUMN;
}

- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{

    switch (pickerType) {
        case CATEGORY_PICKER:
            return [categoryTypes count];;
            break;
        case LOCATION_PICKER:
            return [locationTypes count];
            break;
        case ORIGINATOR_PICKER:
            return [originatorTypes count];
            break;
        case DESTINATION_PICKER:
            return [destinationTypes count];
            break;
        case STATUS_PICKER:
            return [statusTypes count];
            break;
        default: return -1;
            break;
    }

}



- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
    switch (pickerType) {
        case CATEGORY_PICKER:
            return [categoryTypes objectAtIndex:row];
            break;
        case LOCATION_PICKER:
            return [locationTypes objectAtIndex:row];
            break;
        case ORIGINATOR_PICKER:
            return [originatorTypes objectAtIndex:row];
            break;
        case DESTINATION_PICKER:
            return [destinationTypes objectAtIndex:row];
            break;
        case STATUS_PICKER:
            return [statusTypes objectAtIndex:row];
            break;
        default: return nil;
            break;

    }
}




- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
    switch (pickerType) {
        case CATEGORY_PICKER: {
            NSString *categoryType  = [categoryTypes objectAtIndex:[pickerView selectedRowInComponent:0]];
            [categoryTypeBtn setTitle:categoryType forState:UIControlStateNormal];
            break;
        }
        case LOCATION_PICKER: {

            NSString *locationType  = [locationTypes objectAtIndex:[pickerView selectedRowInComponent:0]];
            [locationTypeBtn setTitle:locationType forState:UIControlStateNormal];
            break;

        }
        case ORIGINATOR_PICKER: {
            NSString *originatorType  = [originatorTypes objectAtIndex:[pickerView selectedRowInComponent:0]];
            [originatorTypeBtn setTitle:originatorType forState:UIControlStateNormal];
            break;
        }
        case DESTINATION_PICKER: {
            NSString *destinationType  = [destinationTypes objectAtIndex:[pickerView selectedRowInComponent:0]];
            [destinationTypeBtn setTitle:destinationType forState:UIControlStateNormal];
            break;
        }
        case STATUS_PICKER:{
            NSString *statusType  = [statusTypes objectAtIndex:[pickerView selectedRowInComponent:0]];
            [statusTypeBtn setTitle:statusType forState:UIControlStateNormal];

            break;
        }
        default:
            break;
    }
}
-(IBAction) showLocationTypePicker{

    pickerType = LOCATION_PICKER;
    picker.hidden = NO;
    [picker reloadAllComponents];

}
-(IBAction) showCategoryTypePicker{
    pickerType = CATEGORY_PICKER;
    picker.hidden = NO;
    [picker reloadAllComponents];
}

-(IBAction) showOriginatorTypePicker{
    pickerType = ORIGINATOR_PICKER;
    picker.hidden = NO;
    [picker reloadAllComponents];
}

-(IBAction) showDestinationTypePicker{
    pickerType = DESTINATION_PICKER;
    picker.hidden = NO;
    [picker reloadAllComponents];
}

-(IBAction) showStatusTypePicker{
    pickerType = STATUS_PICKER;
    picker.hidden = NO;
    [picker reloadAllComponents];
}
- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (NSUInteger)supportedInterfaceOrientations {
    return UIInterfaceOrientationMaskPortrait;
}

#pragma - getting info from the UI

//NSString *test = nil;


- (IBAction)checkData:(id)sender
{
    /*
     name = nameTextField.text;
     surname = surnameTextField.text;
     bornDate = bornDateTextField.text;
     address = addressTextField.text;
     zipCode = zipTextField.text;
     email = emailTextField.text;
     */

    //NSLog(@" Name: %@ n Surname: %@ n Date of Birth: %@ n Address: %@ n Post Code: %@ n email: %@ n", name, surname, bornDate, address, zipCode, email);

    unsigned int x,a = 0;
    NSMutableString *emailmessage; //stringa variabile
    emailmessage = [NSMutableString stringWithFormat: @""]; //le stringhe mutabili vanno inizializzate in questo modo!


    for (x=0; x<7; x  )
    {
        switch (x) {
            case 0:
                if (nameTextField.text == nil) {
                    [emailmessage appendString:@"Name, "];
                    a=1;

                }
                break;

            case 1:
                if (emailTextField.text == nil)
                {
                    [emailmessage appendString:@"Email Address, "];
                    a=1;
                }
                break;

            case 2:
                if (dateTextField.text == nil)
                {
                    [emailmessage appendString:@"Date of Near Miss, "];
                    a=1;
                }
                break;

            case 3:
                if (timeTextField.text == nil)
                {
                    [emailmessage appendString:@"Time of Near Miss, "];
                    a=1;
                }
                break;

            case 4:
                if (blankTextField.text == nil)
                {
                    [emailmessage appendString:@"Post Code, "];
                    a=1;
                }
                break;

            case 5:
                if (blankbTextField.text == nil)
                {
                    [emailmessage appendString:@"Email, "];
                    a=1;
                }
                break;

            case 6:
                if (mlabelcategory.text == nil)
                {
                    [emailmessage appendString:@"Category, "];
                    a=1;
                }
                break;
            case 7:
                if (messageTextView.text == nil)
                {
                    [emailmessage appendString:@"Observation Description, "];
                    a=1;
                }
                break;

            default:
                break;
        }

    }

    NSLog (@"Email Message: %@", emailmessage);

    if (a == 1) {

        NSMutableString  *popupError;
        popupError = [NSMutableString stringWithFormat: @"Per inviare compilare i seguenti campi:  "];

        [popupError appendString:emailmessage]; //aggiungo i miei errori
        [popupError appendString: @" grazie della comprensione."]; //

        NSLog(@"%@", popupError);

        UIAlertView *chiamataEffettuata = [[UIAlertView alloc]
                                           initWithTitle:@"ATTENTION" //titolo del mio foglio
                                           message:popupError
                                           delegate:self
                                           cancelButtonTitle:@"Ok, correggo" //bottone con cui si chiude il messaggio
                                           otherButtonTitles:nil, nil];
        [chiamataEffettuata show]; //istanza per mostrare effettivamente il messaggio
    }

    else
    {
        name = nameTextField.text;
        emailaddress = emailTextField.text;
        date = dateTextField.text;
        time = timeTextField.text;
        blank = blankTextField.text;
        blankb = blankbTextField.text;
        category = mlabelcategory.text;
        message = messageTextView.text;


        NSMutableString *nearmissreport;
        nearmissreport = [NSMutableString stringWithFormat: @"<br><br> <b>Name:</b> %@ <br> <b>Email Address:</b> %@ <br> <b>Date of Near Miss:</b> %@ <br> <b>Time of Near Miss:</b> %@ <br> <b>Post Code:</b> %@ <br> <b>Email Address:</b> %@ <br> <b>Category:</b> %@ <br><b>Observation Description:</b> %@ <br>", name, emailaddress, date, time, blank, blankb, category, message];

        NSLog(@"Near Miss Report: %@", nearmissreport);

        NSMutableString *testoMail;
        testoMail = [NSMutableString stringWithFormat: nearmissreport];

        NSLog(@"%@", testoMail);


        //MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
        MFMailComposeViewController  *picker = [[MFMailComposeViewController  alloc] init];
        picker.mailComposeDelegate = self;

        [picker setSubject: name];

        // Set up the recipients.
        NSArray *toRecipients = [NSArray arrayWithObjects:@"paul.haddell@bbmmjv.com",nil];

        //NSArray *ccRecipients = [NSArray arrayWithObjects:@"second@example.com",@"third@example.com", nil];
        //NSArray *bccRecipients = [NSArray arrayWithObjects:@"four@example.com",nil];

        [picker setToRecipients:toRecipients];
        //[picker setCcRecipients:ccRecipients];
        //[picker setBccRecipients:bccRecipients];

        // Attach an image to the email.
        //NSString *path = [[NSBundle mainBundle] pathForResource:@"ipodnano" ofType:@"png"];
        //NSData *myData = [NSData dataWithContentsOfFile:path];
        //[picker addAttachmentData:myData mimeType:@"image/png" fileName:@"ipodnano"];

        // Fill out the email body text.
        //NSMutableString *emailBody;
        testoMail = [NSMutableString stringWithFormat: @"%@", testoMail];

        [picker setMessageBody:testoMail isHTML:YES]; //HTML!!!!!!

        // Present the mail composition interface.
        [self presentViewController:picker animated:YES completion:nil];
    }
}


// The mail compose view controller delegate method
- (void)mailComposeController:(MFMailComposeViewController *)controller
          didFinishWithResult:(MFMailComposeResult)result
                        error:(NSError *)error
{
    [self dismissModalViewControllerAnimated:YES];
}

#pragma mark - Mandare email
/*
 - (void)sendMail:(NSMutableString*)testoMail{

 MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
 picker.mailComposeDelegate = self;

 [picker setSubject:@"Reclutamento pompieri"];

 // Set up the recipients.
 NSArray *toRecipients = [NSArray arrayWithObjects:@"reda.bousbah@gmail.com",nil];
 //NSArray *ccRecipients = [NSArray arrayWithObjects:@"second@example.com",@"third@example.com", nil];
 //NSArray *bccRecipients = [NSArray arrayWithObjects:@"four@example.com",nil];

 [picker setToRecipients:toRecipients];
 //[picker setCcRecipients:ccRecipients];
 //[picker setBccRecipients:bccRecipients];

 // Attach an image to the email.
 //NSString *path = [[NSBundle mainBundle] pathForResource:@"ipodnano" ofType:@"png"];
 //NSData *myData = [NSData dataWithContentsOfFile:path];
 //[picker addAttachmentData:myData mimeType:@"image/png" fileName:@"ipodnano"];

 // Fill out the email body text.
 NSString *emailBody = @"It is raining in sunny California!";
 [picker setMessageBody:emailBody isHTML:NO];

 // Present the mail composition interface.
 [self presentViewController:picker animated:YES completion:nil];


 }
 */



#pragma mark - methods to control the keyboard

- (IBAction)backgroundTap:(id)sender //method for resign the keyboard when the background is tapped
{
    [nameTextField resignFirstResponder];
    [emailTextField resignFirstResponder];
    [dateTextField resignFirstResponder];
    [timeTextField resignFirstResponder];
    [blankTextField resignFirstResponder];
    [blankbTextField resignFirstResponder];
    [mlabelcategory resignFirstResponder];
    [messageTextView resignFirstResponder];

}

- (IBAction)doneButtonPressed:(id)sender
{
    NSLog( @"done button pressed");
    [sender resignFirstResponder];
}
@end

Большое спасибо

Комментарии:

1. Вам следует выполнить некоторую отладку, чтобы сузить проблему (и опубликовать меньше кода). Выполните пошаговый просмотр кода в отладчике. Проверьте значения переменных. Добавьте NSLogs. Если в представлении средства выбора массивы не отображаются, подтвердите, что массивы инициализируются (например, действительно ли выполняется initWithNibName). Подтвердите, что вызываются методы делегирования представления выбора, и подтвердите, какие значения они видят для массивов.

2. При запуске этого приложения в окне отладки ничего не отображается. Я понятия не имею, почему это не работает. У меня есть отличный пример, который отлично работает, когда я затем пытаюсь создать то же приложение, что и совершенно новое приложение, оно ничего не показывает в массиве. Но не дает никаких указаний относительно того, почему.

3. Отладка предназначена не только для случаев, когда приложение выходит из строя и само что-то записывает в консоль отладки. Вы также можете использовать его для отслеживания проблем, при которых сбой отсутствует. Узнайте, как использовать точки останова, пошагово просматривая код построчно. Как минимум, вы должны иметь возможность размещать NSLogs в критических точках, чтобы подтвердить, что все происходит так, как вы думаете.