CODEWITHSUNDEEP
iphoneobjective-ccocoa-touchuitextfield
madcoderz
madcoderz

Reputation: 4431

problem when creating UITextField programmatically iphone

I'm struggling when i try to create 11 text fields programmatically. The problem is that the text fields doesn't show up. I'm creating them in the viewDidLoad method.

Here's the code i'm using:

- (void)viewDidLoad
{
    // Determine some basic info
    int numberOfTextfields = 11;
    int textfieldHeight = 40;
    int textfieldWidth = 200;


    // Create the UIScrollView
    UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, numberOfTextfields*textfieldHeight,textfieldWidth)];


    // Create all the textfields
    NSMutableArray *textfields = [NSMutableArray arrayWithCapacity:
                                  (NSUInteger)numberOfTextfields];
    for(int i = 0; i < numberOfTextfields; i++) {
        UITextField *field = [[UITextField alloc] initWithFrame:
                              CGRectMake(0,i*textfieldHeight,textfieldHeight,textfieldWidth)];

        [scrollView addSubview:field];
        [textfields addObject:field];
    }

    [super viewDidLoad];

}

Any clues on why they don't show up?

Thanks in advance.

Upvotes: 2

Views: 5749

Answers (5)

Adarsh V C
Adarsh V C

Reputation: 2314

Try the below code. Textfields are added and you can scroll the textview. 

int numberOfTextfields = 11;
int textfieldHeight = 40;
int textfieldWidth = 200;



UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0,textfieldWidth,numberOfTextfields*textfieldHeight)];
    scrollView.contentSize = CGSizeMake(textfieldWidth, numberOfTextfields*textfieldWidth+10);



NSMutableArray *textfields = [NSMutableArray arrayWithCapacity:
                                  (NSUInteger)numberOfTextfields];



for(int i = 1; i < numberOfTextfields; i++) 
{
        UITextField *field = [[UITextField alloc] initWithFrame:
                              CGRectMake(0,i*textfieldHeight,textfieldWidth,textfieldHeight)];
        field.borderStyle=UITextBorderStyleRoundedRect;
        [scrollView addSubview:field];
        [textfields addObject:field];
 }



[self.view addSubview:scrollView];
[super viewDidLoad];

Upvotes: 0

sudo rm -rf
sudo rm -rf

Reputation: 29524

You seem to never add scrollView as a subview.

Your textFields were atually hidden because you never set the border style. Try this:

- (void)viewDidLoad
{
    // Determine some basic info
    int numberOfTextfields = 11;
    int textfieldHeight = 40;
    int textfieldWidth = 200;


    // Create the UIScrollView
    UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, textfieldWidth,numberOfTextfields*textfieldHeight)];
    scrollView.contentSize = CGSizeMake(numberOfTextfields*textfieldWidth, textfieldHeight);

    // Create all the textfields
    NSMutableArray *textfields = [NSMutableArray arrayWithCapacity:
                                  (NSUInteger)numberOfTextfields];
    for(int i = 0; i < numberOfTextfields; i++) {
        UITextField *field = [[UITextField alloc] initWithFrame:CGRectMake(0,i*textfieldHeight,textfieldWidth,textfieldHeight)];
        field.borderStyle = UITextBorderStyleRoundedRect;
        [scrollView addSubview:field];
        [textfields addObject:field];
    }

    [self.view addSubview:scrollView];

    [super viewDidLoad];
}

Upvotes: 5

iAmitWagh
iAmitWagh

Reputation: 453

Check this code.....frame parameters are(x,y,width,height)

    int numberOfTextfields = 11;
    int textfieldHeight = 40;
    int textfieldWidth = 200;


    // Create the UIScrollView
    UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0,textfieldWidth,numberOfTextfields*textfieldHeight)];


    // Create all the textfields
    NSMutableArray *textfields = [NSMutableArray arrayWithCapacity:
                                  (NSUInteger)numberOfTextfields];
    for(int i = 0; i < numberOfTextfields; i++) {
        UITextField *field = [[UITextField alloc] initWithFrame:
                              CGRectMake(0,i*textfieldHeight,textfieldWidth,textfieldHeight)];
        field.borderStyle=UITextBorderStyleRoundedRect;
        [scrollView addSubview:field];
        [textfields addObject:field];
    }
    [self.view addSubview:scrollView];
    [super viewDidLoad];

Upvotes: 0

Tatvamasi
Tatvamasi

Reputation: 2547

you need to add your scroll view to your view controller. if it is allocated,
else do this self.view = [[UIView alloc] initWithFrame:CGRectMake (0,0,320,460)] add this line at the end [self.view addSubview: scrollView]

Upvotes: 0

jv42
jv42

Reputation: 8583

You need to add your UIScrollView to your view and to setup its content area, as it doesn't manage it automagically (as you might have expected).

Upvotes: 0

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