UILabel does not change

my code:

- (void)viewDidLoad 
 {
NSString *text = @"fjkldsjfkladsjfkljsdaklfjadsklfjdskjfdskjflkdsahfahfdkdfdsfasdfasdfafjkldsjfkladsjfkljsdaklfjadsklfjdskjfdskjflkdsahfahfdkdfdsfasdfasdfass"
                "fjkldsjfkladsjfkljsdaklfjadsklfjdskjfdskjflkdsahfahfdkdfdsfasdfasdfa开发者_如何转开发s"
                "fjkldsjfkladsjfkljsdaklfjadsklfjdskjfdskjflkdsahfahfdkdfdsfasdfasdfas";

myLabel = [self getTheHeight:text NameofFont:FONT_NAME fontSize:FONT_SIZE LineMode:UILineBreakModeWordWrap];
[super viewDidLoad];
}

- (UILabel *)getTheHeight:(NSString *)text NameofFont:(NSString *)font_name fontSize:(float)font_size LineMode:(UILineBreakMode)lineBreakMode
{
 CGSize size = [text sizeWithFont:[UIFont fontWithName:FONT_NAME size:FONT_SIZE]];

UILabel *temp = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 320, size.height)];
[temp setFont:[UIFont fontWithName:FONT_NAME size:FONT_SIZE]];
[temp setLineBreakMode:UILineBreakModeWordWrap];
[temp setNumberOfLines:0];
temp.text = text;

return temp;
}

I have a method that returns the formatted label. the myLabel is putted through IB . The problem is that the return label does not affect to myLabel.

Whats wrong in code? myLabel does not change text , frame etc.

Try this,

Pass your mylabel to function like...

- (void)viewDidLoad 
 {
NSString *text = @"fjkldsjfkladsjfkljsdaklfjadsklfjdskjfdskjflkdsahfahfdkdfdsfasdfasdfafjkldsjfkladsjfkljsdaklfjadsklfjdskjfdskjflkdsahfahfdkdfdsfasdfasdfass"
                "fjkldsjfkladsjfkljsdaklfjadsklfjdskjfdskjflkdsahfahfdkdfdsfasdfasdfas"
                "fjkldsjfkladsjfkljsdaklfjadsklfjdskjfdskjflkdsahfahfdkdfdsfasdfasdfas";

[self getTheHeight:text NameofFont:FONT_NAME fontSize:FONT_SIZE LineMode:UILineBreakModeWordWrap withLabel:myLabel];
[super viewDidLoad];
}

- (void)getTheHeight:(NSString *)text NameofFont:(NSString *)font_name fontSize:(float)font_size LineMode:(UILineBreakMode)lineBreakMode  withLabel:(UILabel*)temp
{
 CGSize size = [text sizeWithFont:[UIFont fontWithName:FONT_NAME size:FONT_SIZE]];

temp.frame = CGRectMake(0, 0, 320, size.height);
[temp setFont:[UIFont fontWithName:FONT_NAME size:FONT_SIZE]];
[temp setLineBreakMode:UILineBreakModeWordWrap];
[temp setNumberOfLines:1];
temp.text = text;
}

You are not modifying the properties of myLabel. Thats the problem here.

A solution for this problem is, Pass the mylabel as a parameter to the function and modify the properties with that reference and let the function returns nothing.

I think the basic problem is to set the proper height of label according to the text. Try this code:-

It is simpler and you need not to write some extra methods

    CGSize labelsize;
    UILabel *commentsTextLabel = [[UILabel alloc] init];;
    [commentsTextLabel setNumberOfLines:0];
    [commentsTextLabel setBackgroundColor:[UIColor clearColor]];
    NSString *text = @"fjkldsjfkladsjfkljsdaklfjadsklfjdskjfdskjflkdsahfahfdkdfdsfasdfasdfafjkldsjfkladsjfkljsdaklfjadsklfjdskjfdskjflkdsahfahfdkdfdsfasdfasdfassfjkldsjfkladsjfkljsdakljadsklfjdskjfdskjflkdsahfahf dkdfdsfasdfasdfasfjkldsjfkladsjfkljsdakladsklfjdskjfdskjflkdsahfahfdkdfdsfasdfasdfas";

    [commentsTextLabel setFont:[UIFont fontWithName:@"Helvetica"size:14]];
    labelsize=[text sizeWithFont:commentsTextLabel.font constrainedToSize:CGSizeMake(268, 2000.0) lineBreakMode:UILineBreakModeWordWrap];
    commentsTextLabel.frame=CGRectMake(10, 24, 268, labelsize.height);
    [commentsTextLabel release];

set your own constraintTosize and frame x and y cordinate.