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UILabel *label = [[UILabel alloc] init];
label.text = #"Hello";
[label sizeToFit];
CGSize size = label.frame.size;
Usually we get the size of the label in this way, but text in the UILabel does not fill all space in it, there's always some margin around the text. That makes drawing label difficult to be exactly the same as visual draft. Anyone could help ？
for example: If you want to put an icon at the bottom of some text, let the margin between them be, for example 50px, and you write icon.frame = CGRectMake(10,textLabel.frame.size.height + textLabel.frame.origin.y + 50, 100, 100); but since the text can't fill all space in UILabel, so the margin in this way should be a bit larger than it should be. So I want to figure out a better way, thanks.
try with this bellow method which returns dynamic height of UILable with its text content... we this method you can set frame of UILable with its text content...
-(float) calculateHeightOfTextFromWidth:(NSString*) text: (UIFont*)withFont: (float)width :(UILineBreakMode)lineBreakMode
{
[text retain];
[withFont retain];
CGSize suggestedSize = [text sizeWithFont:withFont constrainedToSize:CGSizeMake(width, FLT_MAX) lineBreakMode:lineBreakMode];
[text release];
[withFont release];
return suggestedSize.height;
}
and use it like bellow...
UILabel *lblAddress = [[UILabel alloc]init];
[lblAddress setFrame:CGRectMake(110, 31, 200, 50)];
lblAddress.text = #"your Text ";
lblAddress.lineBreakMode = UILineBreakModeWordWrap;
lblAddress.numberOfLines = 0;
lblAddress.font = [UIFont fontWithName:#"Helvetica" size:12];
lblAddress.frame = CGRectMake(lblAddress.frame.origin.x, lblAddress.frame.origin.y,
200,[self calculateHeightOfTextFromWidth:lblAddress.text :lblAddress.font :200 :UILineBreakModeWordWrap] );
lblAddress.textColor = [UIColor darkGrayColor];
[self.view addSubview:lblAddress];
See My Blog..
i hope you get some idea from this post...
I have a very long string which is something like that below...
[[sqrt(221)-10,-sqrt(221)-10],[11,11]],[[rootof([[474368400,237184200,-125944810200,258530778000],[1,0,-472,884,42215]])/(sqrt(221)*782707860000)+rootof([[409681800,9099248400,-99876110400,-1875803589000],[1,0,-472,884,42215]])/(sqrt(221)*782707860000)*3,rootof([[-3439170900,-50638826700,864180632700,9670592794500],[1,0,-472,884,42215]])/(sqrt(221)*782707860000)+rootof([[1477010700,22974524100,-369910322100,-4442729593500],[1,0,-472,884,42215]])/(sqrt(221)*782707860000)*3],[rootof([[474368400,237184200,-125944810200,258530778000],[1,0,-472,884,42215]])/(sqrt(221)*782707860000)*2+rootof([[409681800,9099248400,-99876110400,-1875803589000],[1,0,-472,884,42215]])/(sqrt(221)*782707860000)*4,rootof([[-3439170900,-50638826700,864180632700,9670592794500],[1,0,-472,884,42215]])/(sqrt(221)*782707860000)*2+rootof([[1477010700,22974524100,-369910322100,-4442729593500],[1,0,-472,884,42215]])/(sqrt(221)*782707860000)*4]],[sqrt(sqrt(221)+15),sqrt(-sqrt(221)+15)]
How can i display the whole thing in a UILabel with more than one lines (0)?
Also, although there are no linebreaks ("\n") in the string, the result is displayed like below....
[[sqrt(221)-10,-sqrt(221)- 10],[11,11]],[[rootof([[474368400,2 37184200,- 125944810200,258530778000],[1, 0,- 472,884,42215]])/(sqrt(221)*78270
Any help?
PS I could upload an image but i am not allowed beacause i am a new user...
textLabel.lineBreakMode = UILineBreakModeWordWrap;
textLabel.numberOfLines = 0;
set the UILabel as a multiline
MyLbl.numberOfLines = xxx;
if you have not enough space for set the UIlabel then also set the textView As an not editable property:
Mytxt = [[UITextView alloc]initWithFrame:CGRectMake(xx.0, x.0, xx.0,xx.0)];
Mytxt.transform = transform;
Mytxt.adjustsFontSizeToFitWidth = YES;
Mytxt.textColor = [UIColor blackColor];
Mytxt.autoresizingMask=UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
[Mytxt setFont:[UIFont fontWithName:#"Arial" size:xx.0]];
Mytxt.backgroundColor = [UIColor clearColor];
Mytxt.delegate = self;
Mytxt.userInteractionEnabled=YES;
Mytxt.editable=NO;
i hope you get the answer.
You can use UITextView with auto size with non editable mode instead of UILabel (or)
CGSize labelSize = yourString sizeWithFont:cellFont
constrainedToSize:CGSizeMake(190.0f, MAXFLOAT); lineBreakMode:UILineBreakModeWordWrap];
This labelsize will dynamically define the label height you can assign to your label
try this code
NSString *yourString = #"[[sqrt(221)-10,-sqrt(221)-10],[11,11]],[[rootof([[474368400,237184200,-125944810200,258530778000],[1,0,-472,884,42215]])/(sqrt(221)*782707860000)+rootof([[409681800,9099248400,-99876110400,-1875803589000],[1,0,-472,884,42215]])";
UILabel *lblNameDesc=[[UILabel alloc] initWithFrame:CGRectMake(55, 10, 250, 21)];
[lblNameDesc setNumberOfLines:0];
lblNameDesc.text=yourString;
[lblNameDesc setBackgroundColor:[UIColor clearColor]];
[lblNameDesc setTextColor:[UIColor colorWithRed:64.0/255.0 green:64.0/255.0 blue:64.0/255.0 alpha:1.0f]];
[self.view addSubview:lblNameDesc];
// [lblNameDesc release];
[lblNameDesc sizeToFit];
supoose your string is. make your fond and width what ever you want:-
NSString longString = #"dsjkghsdkjnfgvsdjgsl,v.........................";
CGSize maximumLabelSize = CGSizeMake(200,MAXFLOAT);
CGSize expectedLabelSize = [longString sizeWithFont:[UIFont fontWithName:#"Aial-BoldMT" size:15.0] constrainedToSize:maximumLabelSize
lineBreakMode:UILineBreakModeWordWrap];
UILabel *myLabel = [[UILabel alloc] initWithFrame:CGRectMake(50, 100, 200, expectedLabelSize.height)];
myLabel.lineBreakMode = UILineBreakModeWordWrap;
myLabel.numberOfLines = 0;
myLabel.text = longString ;
may this will help you
Try This...
textLabel.lineBreakMode = YES;
textLabel.numberOfLines = 10; // or many that you need...
You want UILineBreakModeCharacterWrap if you want your text to be evenly distributed along several lines (so it doesn't try to break at work boundaries).
I'm making a chat application. When a message arrives then it has to say who sent it. For example, if I were the sender then it should say
Takeshi: message
Andres: message
I want "Takeshi" and "Andres" to be of a different color but on the same line with the message, with line wrapping, like this:
Takeshi: some message text, text, text , text
text, text, text end.
I am trying the following:
Calculate the size of the message.
Calculate the size of the sender's name.
Create string of " " with the length of the sender's name.
but " " not is not sufficient.
I make this:
NSString *from;
if(usr){
from = [NSString stringWithFormat:#"%#: ", #"Yo"];
}else{
from = [NSString stringWithFormat:#"%#: ", [_lbSupportName text]];
}
//This give me one string of n characters of ' ' character.
NSString *spaces = [ChatView stringWithRepeatCharacter:' ' times:from.length * 2];
NSString *mensaje = [NSString stringWithFormat:#"%# %#", spaces, msg];
//Calculating the height
CGSize messageSize = [mensaje sizeWithFont:[UIFont fontWithName:DEFAULT_TEXTFONT size:20]
constrainedToSize:CGSizeMake(_scvConversation.frame.size.width - 10, FLT_MAX)
lineBreakMode:UILineBreakModeWordWrap];
CGSize fromSize = [from sizeWithFont:[UIFont fontWithName:DEFAULT_TEXTFONT size:22]
constrainedToSize:CGSizeMake(FLT_MAX, FLT_MAX)
lineBreakMode:UILineBreakModeWordWrap];
//Image Background
UIImageView *image = [[UIImageView alloc] initWithFrame:CGRectMake(5, yConversationPosition + 5, _scvConversation.frame.size.width - 10, messageSize.height + 30)];
yConversationPosition += image.frame.size.height + 5;
//Create the Label From
UILabel *lb_From = [[UILabel alloc] initWithFrame:CGRectMake(0, 9, fromSize.width, 30)];
[lb_From setFont:[UIFont fontWithName:DEFAULT_TEXTFONT size:20]];
[lb_From setBackgroundColor:[UIColor clearColor]];
[lb_From setText:from];
//Create the Label Message
UILabel *lb_WriteMessage = [[UILabel alloc] initWithFrame:CGRectMake(5, 5, image.frame.size.width-10, image.frame.size.height - 10)];
[lb_WriteMessage setNumberOfLines:messageSize.height / DEFAULT_TEXTSIZE];
[lb_WriteMessage setFont:[UIFont fontWithName:DEFAULT_TEXTFONT size:20]];
[lb_WriteMessage setText:mensaje];
[lb_WriteMessage setBackgroundColor:[UIColor clearColor]];
[lb_WriteMessage setTextColor:[UIColor colorWithRed:(92/255.0f) green:(98/255.0f) blue:(101/255.0f) alpha:1]];
if(usr){
[image setImage:[UIImage imageNamed:#"chat-mensajes-yo.png"]];
[lb_From setTextColor:[UIColor colorWithRed:(230/255.0f) green:(85/255.0f) blue:(84/255.0f) alpha:1]];
}else{
[image setImage:[UIImage imageNamed:#"chat-mensajes-asesor.png"]];
[lb_From setTextColor:[UIColor colorWithRed:(28/255.0f) green:(168/255.0f) blue:(175/255.0f) alpha:1]];
}
[lb_WriteMessage addSubview:lb_From];
[image addSubview:lb_WriteMessage];
[_scvConversation addSubview:image];
//Set the contentSize of the scv_Message and scroll to the new Message
[_scvConversation setContentSize:CGSizeMake(0, yConversationPosition)];
if(_scvConversation.contentSize.height > _scvConversation.frame.size.height){
//Scroll to last Message
float diference = yConversationPosition - _scvConversation.frame.size.height +5;
[_scvConversation setContentOffset:CGPointMake(0, diference)];
}
[image release];
[lb_WriteMessage release];
Please help, I could not do that. :/
You should use two labels. Create the first label for "Name:" with the color you want (1 line label) and calcuate its width based on the text, then create a new label and calculate its height and number of lines and position it using:
[lb_WriteMessage setFrame:CGRectMake(lb_From.frame.origin.x + lb_From.frame.size.width + spacer, lb_from.origin.y, messageSize.width, messageSize.height)];
(where spacer is the number of pixels space you want between the labels).
Take a look on Core Text API. It's not a simple tool, but it gives you incredible flexibility when you understand how it works.
Here is a good start point: http://www.cocoanetics.com/2011/01/befriending-core-text/
Probably later you will want to use more complicated logic in your chat like names highlighting in messages, or some other rich text formating. You can do all this with core text.
Is there an equivalent of Adjust to Fit for UILabel text created dynamically in Xcode?
ie:
UILabel *someLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, 20, 35, 18)];
someLabel.font = [UIFont boldSystemFontOfSize:14];
someLabel.FOO_SIZETOFIT = YES; //FOO CODE
[someLabel release];
add this line
someLabel.adjustsFontSizeToFitWidth = YES;
How can I use strike-through font in objective C??? More specifically in UITableViewCell
cell.textLabel.text = name;
cell.detailTextLabel.text = quantity ;
cell.XXX = ??
this is Marin, the author of the attributed strings chapter in "iOS6 by Tutorials".
Since iOS6 there is actually a native support for a bunch of different text attributes, including strike-trough.
Here's a short example, which you can use for your cell text label:
NSDictionary* attributes = #{
NSStrikethroughStyleAttributeName: [NSNumber numberWithInt:NSUnderlineStyleSingle]
};
NSAttributedString* attrText = [[NSAttributedString alloc] initWithString:#"My Text" attributes:attributes];
cell.textLabel.attributedText = attrText;
That's all. Good luck!
EDIT: This answer is out of date as of iOS 6. Please see the more recent answers below
There is not native support for strike-through or underline fonts. You have to draw the lines yourself over the views for the labels.
This is silly since the font inspector for IB has options to set strike-through and underline, but these are promptly ignored if you try to set them.
CGRect frame = sender.titleLabel.frame;
UILabel *strikethrough = [[UILabel alloc] initWithFrame:frame];
strikethrough.opaque = YES;
strikethrough.backgroundColor = [UIColor clearColor];
strikethrough.text = #"------------------------------------------------";
strikethrough.lineBreakMode = UILineBreakModeClip;
[sender addSubview:strikethrough];
here is how you strikethrough your label. But remember, it only works after ios 6.0
NSNumber *strikeSize = [NSNumber numberWithInt:2];
NSDictionary *strikeThroughAttribute = [NSDictionary dictionaryWithObject:strikeSize
forKey:NSStrikethroughStyleAttributeName];
NSAttributedString* strikeThroughText = [[NSAttributedString alloc] initWithString:#"Striking through it" attributes:strikeThroughAttribute];
strikeThroughLabel.attributedText = strikeThroughText;
1-Get the size of text which needs to strikethrough
CGSize expectedLabelSize = [string sizeWithFont:cell.titleLabel.font constrainedToSize:cell.titleLabel.frame.size lineBreakMode:UILineBreakModeClip];
2-Create an line and add it to the text
UIView *viewUnderline = [[UIView alloc] init];
viewUnderline.frame = CGRectMake(20, 12, expectedLabelSize.width, 1);
viewUnderline.backgroundColor = [UIColor grayColor];
[cell addSubview:viewUnderline];
[viewUnderline release];
Strikethrough is possible by using NSStrikeThroughAttributes and attributedText of UILabel. Here is the solution in Swift
let strikeThroughAttributes = [NSStrikethroughStyleAttributeName : 1]
let strikeThroughString = NSAttributedString(string: "Text of Label", attributes: strikeThroughAttributes)
strikeThroughLabel.attributedText = strikeThroughString
NSMutableAttributedString *attributeString = [[NSMutableAttributedString alloc] initWithString:#"Your String here"];
[attributeString addAttribute:NSStrikethroughStyleAttributeName
value:#2
range:NSMakeRange(0, [attributeString length])];
yourLabel.attributedText = attributeString;
Have you thought about finding your own strikethrough font and loading it yourself? It isn't that hard, just add the UIFont to your Info.plist file and put the name of the font in there. Then you can manually set the text to that new strikethrough font.
See this post on loading custom font.
Can I embed a custom font...
UIView *strikeView = [[UIView alloc] initWithFrame:ccr(0, 0, myLabel.bounds.size.width, 1)];
strikeView.backgroundColor = [UIColor redColor];
strikeView.center = ccp(myLabel.bounds.size.width/2, myLabel.bounds.size.height/2);
[myLabel addSubview:strikeView];
This will strike through the whole cell. In case you need it to look like completed task:
CGSize size = cell.contentView.frame.size; // you'll draw the line in whole cell.
UIView *line = [[UIView alloc] initWithFrame:CGRectMake(15,size.height / 2,size.width - 30, 1)];
line.backgroundColor = [UIColor grayColor]; // set your preferred color
[cell addSubview:line];
You may indicate some other value in CGRectMake instead of 15 - it's offset by X. In this case you'd better then decrease width by doubled value (in my case it's 15*2 = 30) in order it look nice.