I have the code as below for my UITextView set up.
CGRect itemDescFrame = CGRectMake(20, 160, 280, 200);
UITextView *itemDesc = [[UITextView alloc] initWithFrame:itemDescFrame];
...
itemDesc.editable = NO;
itemDesc.scrollEnabled = NO;
...
I have disabled the UITextView scroll bar, however some of the content on the bottom is being hidden. How can I set the UITextView height to fit to the content height?
Thanks
UPDATE:
NSLog(#"frame %#", itemDesc.frame.size.height);
NSLog(#"content %#", itemDesc.contentSize.height);
Result:
2011-10-11 11:00:18.010 abc[1606:207] frame 200.000000
2011-10-11 11:00:18.010 abc[1606:207] content 200.000000
As a subclass of UIScrollView, UITextView has a property called contentSize which, in the case of a UITextView, should be the size that the text occupies after it is is placed in the view. Try setting the height of the text view's frame to the height of contentSize.
Simply add this line of code to force the frame to update its size based on the height of the text it contains:
[self.myTextView sizeToFit];
Note that if you want to add additional padding you can set textContainerInset.
You'll want to call that when the text content changes and upon rotation. To make it easy to see the height adjust, set a background color on the UITextView.
Related
In my UIViewController, I have a non-editable attributed UITextView with scrolling enabled, and I would like to resize the height of the scrolling text to accommodate all screen size widths without having extra white space. I am using AutoLayout and set up outlets for the textview and its height constraint. In the view controller's viewDidLoad method I use the sizeThatFits method to update the textview height, but the resulting size is too small.
- (void)viewDidLoad{
[super viewDidLoad];
NSLog(#"INIT HEIGHT: %f, myTextView.frame.size.height);
CGSize sizeToFit =
[myTextView sizeThatFits: CGSizeMake(myTextView.frame.size.width, MAXFLOAT)];
myTextViewHeightConstraint.constant = sizeToFit.height;
[myTextView updateConstraints];
[myTextView layoutIfNeeded];
NSLog(#"NEW HEIGHT: %f", myTextView.frame.size.height);
}
The log indicates the height was indeed changed from my default of 4000 to 2502, but with 2502 I only see about half of my text via scrolling. I am avoiding nesting the text view in a scroll view, as one solution suggests, since this is discouraged in documentation. What am I missing? Thanks in advance.
I found that the frame of a UITextView will automatically size to its content, so dynamically setting it is not necessary. sizeThatFits is a UIView method and doesn't modify the size of the text content, but rather the size of the window that the text appears in. The only code I needed was to scroll the text to the top:
[myTextView scrollRectToVisible: CGRectMake(0,0,1,1) animated:NO];
This, as well as any Autolayout constraint updates shouldn't be made in viewDidLoad, but rather in viewDidLayoutSubviews or viewWillAppear. Best placement could probably be explained better - I'm open to comments.
I'm trying to resize a UITextView to the size the text within it.
The problem is that Im using a custom font and it the text doesnt fit within the UITextView.
NSString *textToFit = #"pretty long text";
UIFont *customFont = [UIFont fontWithName:#"Museo-100" size:15];
CGSize sizeText = [textToFit sizeWithFont:customFont constrainedToSize:CGSizeMake(textFrame.size.width, 1000)];
Where textFrame is the frame of the UITextView I want to adjust its height.
Im trying different fonts and also different files of the same font and still it never adjusts its height to the height that the text fills.
I've been searching and I dont find a solution. I've tried a workaround using a UILabel and the method textRectForBounds, but still no success, something on this lines.
UILabel *auxLabel = [[UILabel alloc]init];
auxLabel.numberOfLines = 0;
auxLabel.font = [UIFont fontWithName:#"Museo-100" size:15];
auxLabel.text = //THE TEXT I WANT TO FIT IN
CGRect textSize = CGRectMake(0.0, 0.0, textDescription.frame.size.width, FLT_MAX);
CGRect frame = [auxLabel textRectForBounds:textSize limitedToNumberOfLines:0];
I think
UIView : sizeToFit
Should solve your problem.
sizeToFit Resizes and moves the receiver view so it just encloses its
subviews.
Discussion: Call this method when you want to resize the current view so that it uses the most appropriate amount of space.
Specific UIKit views resize themselves according to their own internal
needs. In some cases, if a view does not have a superview, it may size
itself to the screen bounds. Thus, if you want a given view to size
itself to its parent view, you should add it to the parent view before
calling this method.
https://developer.apple.com/library/ios/documentation/uikit/reference/uiview_class/uiview/uiview.html#//apple_ref/occ/instm/UIView/sizeToFit
I have a content size 1000x10000 and it's center is on the center of the viewcontroller.
I want to push a button for it to turn pages. In the next code I've tried almost any number in the origin.x but nothing changes the scroll view.
I don't understand the math of it but when I set origin.x=300 and origin.y=100 the view will move up a bit but that's it.
CGRect frame=scroller.frame;
frame.origin.x=ANY NUMBER HERE;
frame.origin.y=0;
[scroller scrollRectToVisible:frame animated:YES];
How can I set it to move the view from right to left
Try this,
[scroller setContentOffset:CGPointMake(300, 0) animated:YES];
setContentOffset:animated:
Sets the offset from the content view’s origin that corresponds to the receiver’s origin.
You should be creating the UIScrollView's frame to the size of the UIViewController like so:
UIScrollView *scroller = [[UIScrollView alloc] initWithFrame:self.view.frame];
Then set the scrollers CONTENT VIEW to the 1000x10000 size like so:
scroller.contentSize = CGSizeMake(1000, 10000);
The contentSize is what makes a UIScrollview able to scroll, as long as the contentsize is larger than the scrollers frame.
If you want to make it scrollable, then contentSize has to be greater than frame.size, otherwise there isn't space to scroll.
Then ensure that scrollEnabled is set to YES (by default it is, so unless that you've changed it it's already set to YES).
I have a UITextView, which sets its text dynamically from an RSS feed. The textview is a subview of a UIScrollview. Ultimately, I am creating a mobile newspaper app, so the user should be able to scroll through the text (and other subviews).
After creating the views in IB, I added
NSString *sourceCode = [NSString stringWithContentsOfURL:[NSURL URLWithString:self.URL] encoding:NSUTF8StringEncoding error:&error];
sourceCode = [self parseHTMLText:sourceCode];
CGSize maximumLabelSize = CGSizeMake(320,9999);
CGSize txtStringSize = [sourceCode sizeWithFont:self.body.font
constrainedToSize:maximumLabelSize];
CGRect newlblFrame = CGRectMake(0, 0, 320, txtStringSize.height);
self.body.frame = newlblFrame; //body is the textview
self.body.text = sourceCode;
self.scroll.contentSize=CGSizeMake(320, self.body.frame.size.height+300); //scroll is scrollview
A typical NSLog will display body frame = {{0, 0}, {320, 2088}} scrollview frame = {{0, 0}, {320, 417}} scrollview content size = {320, 2388}
However, when I run the app, body maintains its interface builder height of around 196 and the scrollview won't scroll (when i move it, it just bounces back to its original position)
On a side note, when I try to manually change the frame of the textview with CGRectMake, the NSLog shows the correct height, but the view doesn't appear different. I made sure that it's hooked up correctly in IB, because I can adjust other properties, like background color.
EDIT:
After I set the cliptoBounds property of the textview to NO, the textview now adjusts its height and tries to show the entire text. However, it cuts off at the end of the screen, and I still cannot scroll.
Here is what I see currently. I made the scrollview background color gray for convenience. I'm not sure why part of the scrollview is partially in white and and partially gray. (Title) is a separate label btw)
I fixed the problem by moving the code from viewDidLoad to viewDidAppear. Apparently this is an Xcode 4.5 specific issue, resulting from the AutoLayout feature overriding the logic in the viewDidLoad method. A better explanation can be found here.
i hope this will help you
self.scrollview.contentSize=CGSizeMake(320, label.frame.size.height+30);
Try to add this :
[_scrollView setClipsToBounds:YES];
Try this:
CGSize maximumSize = CGSizeMake(200.0, 30.0); // Specify your size. It was for my screen.
UIFont *txtFont = <Ur Font size & Var>;
//new
//fontValue = txtFont;
//new
lblValue.font = txtFont;
lblValue.lineBreakMode = UILineBreakModeWordWrap;
CGSize txtStringSize = [commentTxt sizeWithFont:txtFont
constrainedToSize:maximumSize
lineBreakMode:lblValue.lineBreakMode];
CGRect newlblFrame = CGRectMake(105.0, y, 200.0, txtStringSize.height);
lblValue.frame = newlblFrame;
lblValue.text = #"Your String";
After this set scroll Content size. Hope it'll work for you. It worked for me.
Try to solve in the following way.
// adjust the height of UITextView with content height
CGRect frame = self.body.frame;
frame.size.height = self.body.contentSize.height;
self.body.frame = frame;
// adjust UIScrollView's height with the height of UITextView
self.scroll.frame = frame;
I'm placing a UIImageView inside of a UIScrollView, basing my code off of the answer in this question. The problem I'm having is that there is a significant amount of white space to the bottom and right, and I can't scroll to some of the image in the top and left. I figure this is due to me incorrectly setting the contentSize of the scrollView. Here's the relevant code:
- (void)viewDidLoad
{
[super viewDidLoad];
_imageView.image = _image;
_imageView.bounds = CGRectMake(0, 0, _imageView.image.size.width,_imageView.image.size.height);
_scroller.contentSize = _imageView.image.size;
}
The view controller I'm in has three properties, a UIScrollView (_scroller), a UIImageView (_imageView), and a UIImage (_image).
You're setting the UIImageView's bounds property. You want to be setting its frame property instead. Setting the bounds will resize it around its center point (assuming you haven't changed the underlying CALayer's anchorPoint property), which is causing the frame origin to end up negative, which is why you can't see the upper-left.
_imageView.frame = CGRectMake(0, 0, _imageView.image.size.width, _imageView.image.size.height);
Alternate syntax:
_imageView.frame = (CGRect){CGPointZero, _imageView.image.size};