I have a UILabel and I want to show some text in this label. I want to increase the label width at most 70% of the full screen of my device. If text length of that label doesn't fit this 70% of size then the label automatically goes to the next line as long as the text length. Every time the label length cross the 70% width of main screen then lines break as well. I have tried several ways but unable to solve yet. Please help me to solve this.
Thanks in advance;
Drag a label to your storyboard and add top and leading constraints to it.
Now select the label and control drag to the view holding the label (in your case view of ViewController) you will see the pop up and then select equal width
Now your Label's width is equal to your view's width :) That's not you want you want ur label width to be 70% of your view. So select the equal constraint of label, go to property inspector and change the multiplier to 0.7
Now your label width is 70% of your view!
But you don't want it to be 70% always. It can be at max 70% of screen, so
now change the relationship of constraint from being equal to less than or equal to.
select label and change number of lines to 0.
That's it :) have fun :)
Sample O/P:
When text is short - vs - long:
- - -
EDIT:
Not using a storyboard? Not a problem; write the same constraint programmatically and apply it to label simple enough. If you need help lemme know :)
EDIT:
As you have specified that you want to leave the gap at the beginning of each line in label you can achieve it by using Edge insets
- (void)drawTextInRect:(CGRect)rect {
UIEdgeInsets insets = {0, 5, 0, 0};
[super drawTextInRect:UIEdgeInsetsInsetRect(rect, insets)];
}
You must have forgotten to increase the label's height.
The code below is for allowing the UILabel to have multiple lines:
label.numberOfLines = 0;
label.lineBreakMode = NSLineBreakByWordWrapping;
Then you have to make sure the UILabel's frame has enough height to show the lines. You can achieve this by calculating the required height for the given text (NSString):
NSString *text = #"YourText";
CGFloat your70Width; // whatever your width is
CGSize constraintSize = CGSizeMake(your70Width, MAXFLOAT);
UIFont *yourLabelFont; // whatever your font is
CGRect requiredFrame = [text boundingRectWithSize:constraintSize options:NSStringDrawingUsesFontLeading attributes:#{NSFontAttributeName:yourLabelFont} context:nil];
// Keeps the old x,y coordinates and replaces only the width and height.
CGRect oldLabelFrame = label.frame;
label.frame = CGRectMake(oldLabelFrame.origin.x, oldLabelFrame.origin.y, requiredFrame.size.width, requiredFrame.size.height);
Now the label will be shown nicely in multiple lines.
To increase the height of the label according to the content if you are using storyboard. Give the label FOUR constraints (Top, Bottom, Leading, Trailing) then go to Attribute Inspector and make lines to 0 and in line break do it WORD WRAP.
I am making a app without using storyboard. The app has a long text so I can't get enought space on one line. The app is for both iPad and iPhone. The adjustSizeToFit = true does not work, is there a metode to adjust size of label with multiple lines?
There is no property on UILabel called adjustSizeToFit. Are you sure you didn't mean adjustsFontSizeToFitWidth? Which if you look at the documentation, says:
Normally, the label text is drawn with the font you specify in the font property. If this property is set to true, however, and the text in the text property exceeds the label’s bounding rectangle, the receiver starts reducing the font size until the string fits or the minimum font size is reached. In iOS 6 and earlier, this property is effective only when the numberOfLines property is set to 1.
Which I'm not sure is what you wanted.
If you wanted a UILabel with an arbitrary number of lines, where the text is contained within a certain width, continue reading:
What you do will depend on whether you're using AutoLayout or not:
Not AutoLayout
Just use:
let size = label.sizeThatFits(CGSize(width: myWidth, height: CGFloat.max))
// CGFloat.max, because we don't want to limit the UILabel's height.
label.frame.size = size
AutoLayout
Firstly, you should set numberOfLines to zero.
Secondly, you need to tell AutoLayout how long each line can be, this doesn't default to the width of the label. For this you need a UILabel subclass:
class myLabel : UILabel {
override func layoutSubviews() {
// 1. Get the label to set its frame correctly:
super.layoutSubviews()
// 2. Now the frame is set we can get the correct width
// and set it to the preferredMaxLayoutWidth.
self.preferredMaxLayoutWidth = self.frame.width
}
}
I can't make multiple lines for a label inside the scroll view. Though it perfectly works outside of a scrollview. See picture below for details. The scroll view has a horizontal scroll.
UPD: ScrollView and label constraints:
So apparently I need explicitly set ScrollView contentSize. Also to get this size I need to know it from a label which is a bit tricky here. The full code goes below:
// create a label as usual
let label = UILabel()
label.numberOfLines = 0
label.text = "really long label text..."
// place it with a nice offset and set its width explicitly using parent view width
// after which `sizeToFit` does a trick and adjusts it's height
label.frame.offset(dx: 16.0, dy: 16.0)
label.frame.size.width = self.view.frame.width - 32
label.sizeToFit()
// now add it to the scroll view and set content size to label size plus margin at the bottom
self.scrollView.addSubview(label)
self.scrollView.contentSize = label.frame.size
self.scrollView.contentSize.height += 32
I'm using autolayout on iOS7 and I have a problem like this:
I'm putting a UILabel onto a UIView and I'm arranging my autolayout constraints so that the label's centerX = parent view's centerX. I'm not giving any width constraint to the label. When I set the label's text on runtime, the label is drawn just wide enough for the text to fit, there are no margins/paddings on the left and right sides. What I want is to have some padding on the left and right sides, so that the text doesn't begin just where the label begins. The hack to achieve this could be setting the text as #" text " but of course that's not the way to go :)
How can I achieve what I want?
You can extend UILabel and override the intrinsicContentSize by yourself. Please make sure you have set the textAlignment = NSTextAlignmentCenter as well.
-(CGSize)intrinsicContentSize{
CGSize contentSize = [super intrinsicContentSize];
return CGSizeMake(contentSize.width + 50, contentSize.height);
}
Swift 5.0
open override var intrinsicContentSize: CGSize {
let size = super.intrinsicContentSize
return CGSize(width: size.width + 16, height: size.height)
}
This probably only works when you only have just one line of text to display.
You can create a UILabel subclass and override intrinsicContent,
-(CGSize)intrinsicContentSize {
CGSize s = [super intrinsicContentSize];
s = CGSizeMake(s.width + 20, s.height);
return s;
}
This will add a padding of 20 points to the width. If you want your text in the middle, be sure to set the text alignment to center.
If you're using auto layout, you can set the horizontal constraints and use an NSDictionary in the metrics parameter to set this dynamically.
For instance, if you wanted to give a 10pt padding to the inner content of a UIButton, you could do something like the following:
NSDictionary *padding = #{ #"padding" : #(button.intrinsicContentSize.width + 20) };
NSArray *buttonHConstraints = [NSLayoutConstraint constraintsWithVisualFormat:#"H:|[button(==padding)]|" options:0 metrics:padding views:NSDictionaryOfVariableBindings(button)];
If you are trying to give the UILabel a different colour to its parent view, then you will need to enclose the UILabel in a UIView with the padding and the background colour you want.
If your UILabels background colour is the same as its parent view, then I don't understand the problem just use auto layout to specify how much space you want relative to the thing it is next to.
If I have a UIButton arranged using autolayout, its size adjusts nicely to fit its content.
If I set an image as button.image, the instrinsic size again seems to account for this.
However, if I tweak the titleEdgeInsets of the button, the layout does not account for this and instead truncates the button title.
How can I ensure that the intrinsic width of the button accounts for the inset?
Edit:
I am using the following:
[self.backButton setTitleEdgeInsets:UIEdgeInsetsMake(0, 5, 0, 0)];
The goal is to add some separation between the image and the text.
You can get this to work in Interface Builder (without writing any code), by using a combination of negative and positive Title and Content Insets.
Update: Xcode 7 has a bug where you cannot enter negative values in the Right Inset field, but you can use the stepper control next to it to decrease the value. (Thanks Stuart)
Doing this will add 8pt of spacing between the image and the title and will increase the intrinsic width of the button by the same amount. Like this:
You can solve this without having to override any methods or set an arbitrary width constraint. You can do it all in Interface Builder as follows.
Intrinsic button width is derived from the title width plus the icon width plus the left and right content edge insets.
If a button has both an image and text, they’re centered as a group, with no padding between.
If you add a left content inset, it’s calculated relative to the text, not the text + icon.
If you set a negative left image inset, the image is pulled out to the left but the overall button width is unaffected.
If you set a negative left image inset, the actual layout uses half that value. So to get a -20 point left inset, you must use a -40 point left inset value in Interface Builder.
So you provide a big enough left content inset to create space for both the desired left inset and the inner padding between the icon and the text, and then shift the icon left by doubling the amount of padding you want between the icon and the text. The result is a button with equal left and right content insets, and a text and icon pair that are centered as a group, with a specific amount of padding between them.
Some example values:
// Produces a button with the layout:
// |-20-icon-10-text-20-|
// AutoLayout intrinsic width works as you'd desire.
button.contentEdgeInsets = UIEdgeInsetsMake(10, 30, 10, 20)
button.imageEdgeInsets = UIEdgeInsetsMake(0, -20, 0, 0)
Why not override the intrinsicContentSize method on UIView? For example:
- (CGSize) intrinsicContentSize
{
CGSize s = [super intrinsicContentSize];
return CGSizeMake(s.width + self.titleEdgeInsets.left + self.titleEdgeInsets.right,
s.height + self.titleEdgeInsets.top + self.titleEdgeInsets.bottom);
}
This should tell the autolayout system that it should increase the size of the button to allow for the insets and show the full text. I'm not at my own computer, so I haven't tested this.
You haven't specified how you're setting the insets, so I'm guessing that you're using titleEdgeInsets because I see the same effect you're getting. If I use contentEdgeInsets instead it works properly.
- (IBAction)ChangeTitle:(UIButton *)sender {
self.button.contentEdgeInsets = UIEdgeInsetsMake(0,20,0,20);
[self.button setTitle:#"Long Long Title" forState:UIControlStateNormal];
}
And for Swift worked this:
extension UIButton {
override open var intrinsicContentSize: CGSize {
let intrinsicContentSize = super.intrinsicContentSize
let adjustedWidth = intrinsicContentSize.width + titleEdgeInsets.left + titleEdgeInsets.right
let adjustedHeight = intrinsicContentSize.height + titleEdgeInsets.top + titleEdgeInsets.bottom
return CGSize(width: adjustedWidth, height: adjustedHeight)
}
}
Love U Swift
This thread is a bit old, but I just ran into this myself and was able to solve it by using a negative inset. For example, substitute your desired padding values here:
UIButton* myButton = [[UIButton alloc] init];
// setup some autolayout constraints here
myButton.titleEdgeInsets = UIEdgeInsetsMake(-desiredBottomPadding,
-desiredRightPadding,
-desiredTopPadding,
-desiredLeftPadding);
Combined with the right autolayout constraints, you end up with an auto-resizing button which contains an image and text! Seen below with desiredLeftPadding set to 10.
You can see that the actual frame of the button doesn't encompass the label (since the label is shifted 10 points to the right, outside the bounds), but we've achieved 10 points of padding between the text and the picture.
I wanted to add a 5pt space between my UIButton icon and the label. This is how I achieved it:
UIButton *infoButton = [UIButton buttonWithType:UIButtonTypeCustom];
// more button config etc
infoButton.contentEdgeInsets = UIEdgeInsetsMake(0, 0, 0, 5);
infoButton.titleEdgeInsets = UIEdgeInsetsMake(0, 5, 0, -5);
The way contentEdgeInsets, titleEdgeInsets and imageEdgeInsets relate to each other requires a little give and take from each inset. So if you add some insets to the title's left you have to add negative inset on the right and provide some more space (via a positive inset) on the content right.
By adding a right content inset to match the shift of the title insets my text doesn't go outside the bounds of the button.
For Swift 3 based on pegpeg's answer:
extension UIButton {
override open var intrinsicContentSize: CGSize {
let intrinsicContentSize = super.intrinsicContentSize
let adjustedWidth = intrinsicContentSize.width + titleEdgeInsets.left + titleEdgeInsets.right
let adjustedHeight = intrinsicContentSize.height + titleEdgeInsets.top + titleEdgeInsets.bottom
return CGSize(width: adjustedWidth, height: adjustedHeight)
}
}
All above did not work for iOS 9+, what i did is:
Add a width constraint (for a minimum width when the button doesn't have any text. The button will auto scale if text is provided)
set the relation to Greater Than or Equal
Now to add a border around the button just use the method:
button.contentEdgeInsets = UIEdgeInsetsMake(0,20,0,20);
The option is also available in interface builder. See the Inset. I set left and right to 3. Works like a charm.
The solution I use is to add a width constraint on the button. Then somewhere in initialization, after your text is set, update the width constraint like so:
self.buttonWidthConstraint.constant = self.shareButton.intrinsicContentSize.width + 8;
Where 8 is whatever your inset is.