CODEWITHSUNDEEP
iphoneiosuitextviewcgrect
Piero
Piero

Reputation: 9273

change UITextView height programmatically with the text

i want change the UITextView programmatically with the amount of text i set, and i have a problem, if i add a the UITextView with interface builder and i do this:

CGRect frame = textViewA1.frame;
frame.size.height = textViewA1.contentSize.height;
textViewA1.frame = frame;

all work fine, but if i create the UITextView programmatically, the height don't change, i do this:

 UITextView *textViewA1 = [[UITextView alloc] initWithFrame:CGRectMake(5, 5, 320, 50)];
[textViewA1 setFont:[UIFont fontWithName:@"Enriqueta" size:15]];
[textViewA1 setScrollEnabled:NO];
[textViewA1 setUserInteractionEnabled:NO];
[textViewA1 setBackgroundColor:[UIColor clearColor]];
[textViewA1 setText:@"A lot of text"];
CGRect frame = textViewA1.frame;
frame.size.height = textViewA1.contentSize.height;
textViewA1.frame = frame;

in this way the height size of the uitextview don't change, how i can do?

Upvotes: 8

Views: 24990

Answers (5)

codercat
codercat

Reputation: 23271

to scroll UITextView when added multiple line in textview

- (BOOL)textViewShouldBeginEditing:(UITextView *)textView
{
    CGRect frameTextView = textView.frame;
    frameTextView.height -= KEY_BOARD_HEIGHT;
    textView.frame = frameTextView;
}
- (BOOL)textViewShouldEndEditing:(UITextView *)textView;
{
    CGRect frameTextView = textView.frame;
    frameTextView.height += KEY_BOARD_HEIGHT;
    textView.frame = frameTextView;
}

Upvotes: -2

zolibra
zolibra

Reputation: 532

i think you need to do :

CGRect frame = textViewA1.frame;
frame.size.height = textViewA1.contentSize.height;
textViewA1.frame = frame;

after the addsubview:

[self.view addSubview: self.textView];

Upvotes: 10

rob mayoff
rob mayoff

Reputation: 385540

Just send the sizeToFit message to the UITextView. It will adjust its own height to just fit its text. It will not change its own width or origin.

[textViewA1 sizeToFit];

Upvotes: 10

trumpetlicks
trumpetlicks

Reputation: 7065

Try this code

UIFont * font = [UIFont fontWithName:@"Enriqueta" size:15];
textViewA1.font = font;
NSString * theText = @"A lot of text";
CGSize theStringSize = [theText sizeWithFont:font constrainedToSize:CGSizeMake(190, 1000000) lineBreakMode:UILineBreakModeWordWrap];
CGRect frame = textViewA1.frame;
frame.size.height = theStringSize.height;
textViewA1.frame = frame;

This of course has a static width of 190 pixels for the textview. You can obviously change that!!!

Upvotes: 0

davidgoli
davidgoli

Reputation: 2495

You need to calculate the frame size for the text you have, for instance:

UIFont *font = [UIFont fontWithName:@"Enriqueta" size:15];
NSString *text = @"A lot of text";
CGSize frameSize = [text sizeWithFont:font];
CGRect originalFrame = textViewA1.frame;
textViewA1.frame = CGRectMake(CGRectGetMinX(originalFrame), CGRectGetMinY(originalFrame), frameSize.width, frameSize.height);

To keep it from exceeding a particular height, use:

CGFloat maxHeight = 100; // or something
CGSize frameSize = [text sizeWithFont:font constrainedToSize:maxHeight];

Upvotes: 0

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