UILabel's numberofLines issue - iphone

Question

I have to display some text(dynamic) which is in three string variables like this:
SanFransisco,California 32122 i.e city,state zipCode
So thought of displaying them in three labels.But I couldnot understand when to use sizetoFit and when not to.
If it is a large text like BrightWood Park,District of Columbia 32123 then Im getting it like BrightWood Park,District of Columb .I couldnot see the zipCode part on the simulator.So Whatever the text mightbe it should be displayed in the simulator.
If city's text is large like Massachusetts Avenue Heights,District of Columbia 32123 then it should be displayed like Massachusetts Avenue Heights,District of
Columbia 32123
Currently Im getting as Massachusetts Avenue Heights,District of Co
NSString *city=[NSString stringWithFormat:#"%#,",self.city];
CGSize constraint4 = CGSizeMake(250, 2000.0f);
CGSize size4=[city sizeWithFont:[UIFont fontWithName:#"Helvetica-Bold" size:12] constrainedToSize:constraint4 lineBreakMode:UILineBreakModeWordWrap];
lblCity=[[UILabel alloc] init];
[lblCity setFrame:CGRectMake(60,Lane1.frame.size.height+Lane1.frame.origin.y,size4.width,size4.height) ];
lblCity.textAlignment=UITextAlignmentLeft;
lblCity.backgroundColor=[UIColor clearColor];
lblCity.text=[NSString stringWithFormat:#"%#",city];
[lblCity setNumberOfLines:0];
lblCity.highlightedTextColor=[UIColor greenColor];
[lblCity setFont:[UIFont fontWithName:#"Helvetica-Bold" size:12]];
[testscroll addSubview: lblCity];
NSString *state=[NSString stringWithFormat:#"%# ",self.state];
CGSize constraint5 = CGSizeMake(250, 2000.0f);
CGSize size5=[state sizeWithFont:[UIFont fontWithName:#"Helvetica-Bold" size:12] constrainedToSize:constraint5 lineBreakMode:UILineBreakModeWordWrap];
lblState=[[UILabel alloc] init];
[lblState setFrame:CGRectMake(lblCity.frame.origin.x+lblCity.frame.size.width,Lane1.frame.size.height+Lane1.frame.origin.y,size5.width,size5.height) ];
lblState.textAlignment=UITextAlignmentLeft;
lblState.backgroundColor=[UIColor clearColor];
lblState.text=[NSString stringWithFormat:#"%#" ,state];
[lblState setNumberOfLines:0];
lblState.highlightedTextColor=[UIColor greenColor];
[lblState setFont:[UIFont fontWithName:#"Helvetica-Bold" size:12]];
[testscroll addSubview: lblState];
NSString *zip=[NSString stringWithFormat:#"%#",self.zip];
CGSize constraint200=CGSizeMake(250,2000.0f);
CGSize size200=[zip sizeWithFont:[UIFont fontWithName:#"Helvetica-Bold" size:12]constrainedToSize:constraint200 lineBreakMode:UILineBreakModeWordWrap ];
zipCode=[[UILabel alloc] init];
[zipCode setFrame:CGRectMake(lblState.frame.origin.x+lblState.frame.size.width,Lane1.frame.size.height+Lane1.frame.origin.y,size200.width,size200.height) ];
zipCode.textAlignment=UITextAlignmentLeft;
zipCode.backgroundColor=[UIColor clearColor];
zipCode.text=[NSString stringWithFormat:#"%#" ,zip];
[zipCode setNumberOfLines:0];
zipCode.highlightedTextColor=[UIColor greenColor];
[zipCode setFont:[UIFont fontWithName:#"Helvetica-Bold" size:12]];
[testscroll addSubview:zipCode];
2.When to use sizetoFit along numberofLines=0 and when not to ?

Answer 1

There are several important points to make autofit UILabel.
At first you have to set label's height with zero
At second you have to set label' numberOfLines to zero too
And in the end you have to call sizeToFit method
Like this:
label.frame = CGRectMake(x, y, width, 0.0f);
label.numberOfLines = 0;
[label sizeToFit];

Answer 2

After get the string, set UILabel size like this
lblCity.text=[NSString stringWithFormat:#"%#",city];
[lblCity setNumberOfLines:0];
[lblCity setFrame:CGRectMake(60,Lane1.frame.size.height+Lane1.frame.origin.y,size4.width,size4.height) ];
[lblCity sizeToFit]; it may be work
///here i tested work fine and show whole text
NSString *city=#"Orlando ";
CGSize constraint4 = CGSizeMake(250, 2000.0f);
CGSize size4=[city sizeWithFont:[UIFont fontWithName:#"Helvetica-Bold" size:12] constrainedToSize:constraint4 lineBreakMode:UILineBreakModeWordWrap];
NSLog(#"size4.width %f height %f ",size4.width,size4.height);
UILabel* lblCity=[[UILabel alloc] init];
[lblCity setFrame:CGRectMake(160,16,size4.width,size4.height) ];
lblCity.textAlignment=UITextAlignmentLeft;
lblCity.backgroundColor=[UIColor clearColor];
lblCity.text=[NSString stringWithFormat:#"%#",city];
[lblCity setNumberOfLines:0];
lblCity.highlightedTextColor=[UIColor greenColor];
[lblCity setFont:[UIFont fontWithName:#"Helvetica-Bold" size:12]];
[lblCity sizeToFit];
[self.view addSubview: lblCity];