I have an UIView that it should contains UILabels, and these UILabels are not fixed if an UILabel is nil, i don't display it, and if is not i must resize the UILabel to fit text (they can be 2 ligne) and put it under another UILabel, and after i must resize the UIView container for the amount of this UILabels. this the Screen Shot that i want to do programmatically:
UILabels can fit large amounts of text by automatically making the font smaller (see the minimum font size value in the Interface Builder). Instead of labels, I would use UITextViews. They fit large amounts of text by allowing the user to scroll. To make them hidden, use change the hidden selector attribute of the UITextViews. Because the UITextViews will never change in size, you can easily calculate how much to decrease the height of the UIView container by per UITextView. Hope this helps!
I think you have to calculate the height of the labels (more specifically, the addition from the original height) one by one. Of course you should be able to do this systematically by having all the labels in an array.
You can use [NSString sizeWithFont:] methods (there are several with similar names) to calculate the height.
http://developer.apple.com/library/ios/#documentation/UIKit/Reference/NSString_UIKit_Additions/Reference/Reference.html
If you want to keep the same font size then you can calculate the frame size for the label at run time depending upon the length of the text..
See here
You need to used following two properties of label-
lineBreakMode
numberOfLine
when you use both of these properties then you will achieve what you want.
Related
I have a UILabel with some text on it, what I want is if the text with the given font does not fit to the label, I want it to be first linebreaked to a second line, and if still does not fit then it should automatically adjust those 2 lines to a smaller font.
I experienced with the IB changing the settings of linebreaks and number of rows, but couldn't get what I want.
Any recommendadtions?
To my knowledge UILabel does not support auto adjusting the font when there is more than one line.
The only way I know of it to iteratively calculate a fitting font size and then to set the appropriate font manually.
Maybe the sizeWithFont: method is a solution for you:
– sizeWithFont:forWidth:lineBreakMode:
This calculates the width / height of a NSString with the appropriate font / settings
I have this interface with multiple UILabels.
On view loading i populate white labelled values with some data from a db.
The problem is, some of that fields are potentially too long for the interface, so i'd like to compute the total height of one label once the text is word wrapped and reposition the 2 labels below (shifting the Y coordinate) accordingly to the previous label's height.
All of this should go inside a UIScrollView to let the user scroll those labels vertically.
Any chance i can do this easily with some control i still don't know, or do i have to do it manually?
Thanks
You'll need to use the NSString UIKit Additions to compute the height you need to set on your UILabel, and then adjust the other controls appropriately.
Specifically, I think you want to use sizeWithFont:forWidth:lineBreakMode: to get the rect for your UILabel.
Alternatively, you could use a UIWebView and display the information as HTML. I don't know if it's necessarily less work, but you'll get a layout that automatically adjusts to the size of its contents.
I have a UITableViewCell with two subviews, a UILabel on the left, and a random input control on the right. The random input control on the right can vary in size, as can the length of the text, but since I can set the word wrap of the text on the left, I need to be able to adjust the size of the UILabel based on the width of the random input control. To complicate matters, the app needs to work in both portrait and landscape modes, which give the table cells different widths.
This wouldn't be difficult if I could read the width of the table cells and set the widths of its subviews appropriately, but at creation time the width of the cell is 0.
Any ideas?
Nothing easier than that: every UITableViewCell is also a UIView, which has a method designed for just that: layoutSubviews, which is called whenever the view (here: cell) needs a re-layout. This is where you lay out the content.
How can I add an indent or offset to text inside a UILabel? It needs to be a specific pixel size, independent of the font size.
you could create another UILabel and then set each label's frames to be a certain width apart, that way it could be done dynamically rather easily if thats what you are trying to accomplish.
I have an NSString and want to fit it into a rectangle. The rectangle has a specified size, lets say width=150 and height=30. When the String is short and has only one character, it can be as high as the rectangle. More specific: It can have a big font size. But if the string has too much characters and would exceed the bounds of the rectangle, it must become smaller. More specific: It's font size must become smaller, so that it won't exceed the bounds of the rectangle. Is there a way of doing that without messing around in core graphics?
For some reason, UILabel's adjustsFontSizeToFitWidth Property has no effect. The text keeps beeing small even if there is plently of space.
I've set that to
label.adjustsFontSizeToFitWidth = YES;
but nothing happens. I hope there is another way to do that...
There are several part to UILabel that make this possible, but first you have to know if you want to truncate the string or make the font size smaller to fit in the rectangle.
For both cases you'll want to set the UILabel's numberOfLines property to 0, allowing the label to wrap as much as necessary. Then you'll want to set the frame of the UILabel to match the rectangle you're looking to fit. From there you take one of two paths:
Truncation: Set the lineBreakMode property to UILineBreakModeClip, UILineBreakModeHeadTruncation, UILineBreakModeTailTruncation, or UILineBreakModeMiddleTruncation depending on the truncation behavior you're looking for.
Resizing: Set the lineBreakMode to either UILineBreakModeWordWrap or `UILineBreakModeCharacterWrap' depending on your preference. Then you'll need to enter a loop to figure out the right font size. Start with a reasonable font size (e.g., 12) and:
Set the font property of the UILabel with a UIFont that matches that size
Call - (void) sizeToFit for the UILabel.
Check the frame for the UILabel:
If the frame will fit within the bounds you need it to, you're done
If the frame is still to big, drop the size of the font and repeat the loop
For the latter option you'll want to make sure you're not squeezing the text into oblivion, so you'll want to put a minimum size cap on the font size.
You can get more information from the UILabel and UIFont documentation.
adjustsFontSizeToFitWidth adjusts the font size down, not up.
Set the font on your UILabel to an appropriately large size, and UILabel will shrink it when necessary to fit in its bounds.
Set label font size to desired normal size.
Set label minimum font size to
smallest possible font
(minimumFontSize property)
Set adjustsFontSizeToFitWidth to
YES.
If you need multiple lines, set lineCount to 0 as the other poster noted.