I need a dynamically resizing UITextView but the right margin encroaches towards the left alarmingly after numerous resizes so that a very narrow strip of text is shown with lots of white space in the text view. This can be reproduced by a simple setup with just a UITextView and UISlider. A simple sample setup that produces this behavior is UISlider with value range from 0-200, a UITextView of 320 width and this code:
- (IBAction)sliderValueChanged:(UISlider *)slider {
textView.frame = CGRectMake(0, 0, 320 - slider.value, 300);
}
Some things I've tried are tinkering with the autoResizingMask, contentMode, contentOffset, and sizeToFit but none of them work. How can this weird behavior be avoided, or is it a bug?
Subclass UITextView and override layoutSubViews to set the frame to CGRectZero and then back to original frame size. It's not elegant but it works.
-(void) layoutSubviews
{
CGRect rect = [self frame];
[self setFrame:CGRectZero];
[self setFrame:rect];
}
Related
I have a UITableViewController with a UIView before the table view. The UIView (IBOutlet UIView *templateDescriptionView) has a UITextView (IBOutlet UITextView *templateDescription) in it. It looks like this:
The UITextView can have a variable amount of text. I'm trying to programmatically resize the UITextView and UIView to compensate for this, but it's not working as expected.
-(void) viewDidLoad
{
[templateDescription sizeToFit];
CGRect frame = templateDescription.frame;
frame.size.height = templateDescription.contentSize.height;
templateDescription.frame = frame;
CGRect viewFrame = templateDescriptionView.frame;
viewFrame.size.height = templateDescription.contentSize.height + 40; // 40 for padding
templateDescriptionView.frame = viewFrame;
}
The problem is, when everything renders, the UIView is partially on top of the UITableView. It resizes, but it's not resizing to the proper height. What am I doing wrong? This is Xcode 5, iOS7.
I am afraid I misunderstood your meaning. But UITableViewController is used to control a UITableView. Does it run well that a UITableViewController control a UIView? Maybe you put a UIView into the HeaderInSection of tableView. In iOS7, self.automaticallyAdjustsScrollViewInsets = NO; can be used to remove the space inset in scrollview.
I've got a very stubborn UIToolbar, who refuses to change its height no matter how may different methods I try.
I've seen this question and it does not work for me
Is there a way to change the height of a UIToolbar?
It is a toolbar for my cameraOverlayView while taking a picture. here is what I've tried and has not worked:
-Adjusting its current frame's height
-Creating a new CGRect for its frame
-Subclassing UIToolbar and editing its drawRect function
- (void)drawRect:(CGRect)rect
{
//Create a rectangle for the toolbar
CGRect rectArea = CGRectMake(0, 0, 320, 70);
[self setFrame:rectArea];
}
Is there some property I'm unaware of which prevents a UIToolbar from adjusting its height?
Just Follow How to change the height of UIToolbar
I'm currently developing a simple text-editing app for iPad.
I want to set left/right margins like the attached picture.
Just adding UITextView into another UIView with larger width won't work because a scroll indicator won't be properly located.
Instead of UIView, I added UITextView into UIScrollView, and it works almost fine. But they sometimes show strange behaviors, and UITextViewDelegate doesn't work with my UIViewController.
Is there any way to set left/right margins only using UITextView?
Thank you.
You can use the property textContainerInset
Following the example of George Green:
myTextView.textContainerInset = UIEdgeInsetsMake(0.0f, 10.0f, 0.0f, 10.0f);
UITextView is a subclass of UIScrollView. I haven't tried it but you could try something like:
myTextView.contentInset = UIEdgeInsetsMake(0.0f, 10.0f, 0.0f, 10.0f);
UIEdgeInsetsMake() is as follows:
UIEdgeInsets UIEdgeInsetsMake (
CGFloat top,
CGFloat left,
CGFloat bottom,
CGFloat right
);
So you should be able to inset your textView content.
Hope this helps, let me know if it works!! :)
I wanted to do the same thing, but textview.contentInset didn't work.
I put UITextView with a narrow width on UIView, then move the scrollview indicator of textview to the right side, so I got what I wanted really well.
textView.clipsToBounds = NO;
textView.scrollIndicatorInsets = UIEdgeInsetsMake(0.0f, 0.0f, 0.0f, -20.0f);
This answer might help.
Is there a way to put UITextView's scroll indicator to outside UITextView?
You can set the scroller right inset value of the UITextView to negative value and disable the clip subview option to achieve your require. No other scrollview is needed.
In code it would be
textView.clipsToBounds = NO;
textView.scrollIndicatorInsets = UIEdgeInsetsMake(0.0f, 0.0f, 0.0f, -50.0f);
By default, the UITextView's contentView becomes scrollable when there is too much text to fit into the textview based on it's height.
I'd like to disable this and instead, update the height of the UITextView to fit in the text. The reason I'm doing this is because I'm adding the UITextView as a subview of a UIScrollView which should handle the scrolling, much like in the native Mail app (when you enter text, the whole view scrolls up, not just the textview.
Anyone got some ideas / has run into the same problem before?
It is very simply done like this:
CGRect frame = textView.frame;
frame.size = textView.contentSize;
textView.frame = frame;
This should set the height of the textview to appropriately fit all of its content.
Few little changes:
-(void)textViewDidChange:(UITextView *)textView {
CGFloat fontHeight = (textView.font.ascender - textView.font.descender) + 1;
CGRect newTextFrame = textView.frame;
newTextFrame.size = textView.contentSize;
newTextFrame.size.height = newTextFrame.size.height + fontHeight;
textView.frame = newTextFrame;
}
Adding the font height gives room for the autocorrection box when you spell something incorrectly.
The UITextView should also be set to not scroll:
[aTextView setScrollEnabled:NO];
I already did several searches on Stack Overflow and Google, but I couldn't find a solution to my problem.
I have a Detail View for a product that includes a UIScrollView and a few subviews (UIImageView, UILabel, UITextView). You can find an example here.
First I wanna autoresize the UITextView (not the text itself!) to the corresponding height. Then I wanna autoresize the entire UIScrollView so that it fits the height of my UITextView and the elements above it. I've tried the following code:
myUITextView.frame = CGRectMake(2.0, 98.0, 316.0, self.view.bounds.size.height);
[scrollView setContentOffset:CGPointMake(0.0, 0.0) animated:NO];
scrollView.contentSize = CGSizeMake(320.0, 98.0 + [myUITextView frame].size.height);
[self.view addSubview:scrollView];
98.0 + [myUITextView frame].size.height) because my thought was: After getting the height of myUITextView, add the height of the other subviews (98.0) to it.
Unfortunately it doesn't work very well. Depending on the content of the UIScrollView, it is too short or too long. I did some logging with the result that the height of the UITextView is always the same:
2010-01-27 14:15:45.096 myApp[1362:207] [myUITextView frame].size.height: 367.000000
Thanks!
There is actually a very easy way to do resize the UITextView to its correct height using its contentSize.
CGRect frame = _textView.frame;
frame.size.height = _textView.contentSize.height;
_textView.frame = frame;
One thing to note is that the correct contentSize is only available after the UITextView has been added to the view with addSubview. Prior to that it is equal to frame.size
A UITextView won't automatically resize itself to it's contents (not as far as I know anyway) so you need to get the size of the text yourself and size the UIView accordingly.
The functions on this page will help - you can use them to get the width and height of a string, something like
// Get the size that the string will render at
NSString *contents = #"This is the content of your UITextView";
CGSize areaSize = [contents sizeWithFont:myView.font forWidth:myView.frame.size.width lineBreakMode:UILineBreakModeWordWrap];
// Then set the frame of your UITextView to be the right size
myView.bounds = CGRectMake(0, 0, areaSize.width, areaSize.height);
Then, you can layout the other components around it.
Hope this helps,
S
PS Warning, the link to the docs is correct but my code example is untested, sorry :)