I made variable size UILabel with following code.
But I want to set maximum width to the label.
Do you have any idea?
- (void)viewDidLoad {
CGSize size = [self labelFrameWithString:#"test text"];
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, size.width. size.height];
label.text = #"test text";
}
- (CGSize)labelFrameWithString:(NSString *)string {
CGRect frame = [string boundingRectWithSize:CGSizeZero
options:(NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingTruncatesLastVisibleLine)
attributes:[NSDictionary dictionaryWithObject:[UIFont systemFontOfSize:16] forKey:NSFontAttributeName]
context:nil];
return frame.size;
}
Have you try pass a constrained CGSize instead of CGSizeZero?
CGSize constraint = CGSizeMake(your_max_width ,NSUIntegerMax);
CGRect frame = [string boundingRectWithSize:constraint
options:(NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingTruncatesLastVisibleLine)
attributes:[NSDictionary dictionaryWithObject:[UIFont systemFontOfSize:16] forKey:NSFontAttributeName]
context:nil];
Related
I am working on collection view in objective c,
My problem was
1.I want to change the cell size according to it's content size
2.If there are no image in cell then like and comment view should go above(refer image).
I have changed the constraint like
NSLayoutConstraint *newConstraint;
if([image isEqualToString:#"no_image.jpg"] || [image isEqualToString:#"no_image.jpg"]){
cell.desc_ImgViewWidth.constant = 0;
[cell.Descimgview setHidden:YES];
newConstraint = [NSLayoutConstraint constraintWithItem:(cell.bottomConstraint).firstItem attribute:(cell.bottomConstraint).firstAttribute relatedBy:NSLayoutRelationGreaterThanOrEqual toItem:(cell.bottomConstraint).secondItem attribute:(cell.bottomConstraint).secondAttribute multiplier:(cell.bottomConstraint).multiplier constant:(cell.bottomConstraint).constant];
}
else{
cell.desc_ImgViewWidth.constant = 120;
[cell.Descimgview setHidden:NO];
newConstraint = [NSLayoutConstraint constraintWithItem:(cell.bottomConstraint).firstItem attribute:(cell.bottomConstraint).firstAttribute relatedBy:NSLayoutRelationEqual toItem:(cell.bottomConstraint).secondItem attribute:(cell.bottomConstraint).secondAttribute multiplier:(cell.bottomConstraint).multiplier constant:(cell.bottomConstraint).constant];
}
[cell.contentView removeConstraint:(cell.bottomConstraint)];
[cell.contentView addConstraint:newConstraint];
[cell layoutIfNeeded];
[[cell contentView] setFrame:[cell bounds]];
[[cell contentView] setAutoresizingMask:UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight];
in cellForItemAtIndexPath delegate method.(like and comment view moving above at first, but after reloading the cell again i.e, like scrolling etc the constraint is not working perfectly)
I want to move like and comment view like this and to reduce the cell height for that particular cell(refer below image)
How to properly do this?
You can use UICollectionViewLayout
func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize {
if imageView != nil
{
return CGSizeMake(width, height)
}
else
{
return CGSizeMake(width, height)
}
}
Finally achieved like this,
- (CGSize)collectionView:(UICollectionView *)collectionView
layout:(UICollectionViewLayout *)collectionViewLayout
sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
NSDictionary* object = [_Data objectAtIndex:indexPath.item];
NSString *image = [object valueForKey:#"image"];
if([image isEqualToString:#"no_image.jpg"] || [image isEqualToString:#"no_image.jpg"]){
CGRect screenRect = [[UIScreen mainScreen] bounds];
CGFloat screenWidth = screenRect.size.width;
float cellWidth = screenWidth;
NSDictionary* object = [_Data objectAtIndex:indexPath.item];
NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:[SwiftHelper getEmojiText:[object valueForKey:#"description"]]];
[str addAttribute:NSFontAttributeName value:[UIFont fontWithName:#"Georgia" size:15.0] range:NSMakeRange(0, str.length)];
CGSize sizeName = CGRectIntegral([str boundingRectWithSize:CGSizeMake(cellWidth-8, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin context:nil]).size;
NSMutableAttributedString *str1 = [[NSMutableAttributedString alloc] initWithString:[SwiftHelper getEmojiText:[object valueForKey:#"name"]]];
[str1 addAttribute:NSFontAttributeName value:[UIFont fontWithName:#"Georgia" size:15.0] range:NSMakeRange(0, str1.length)];
CGSize sizeName1 = CGRectIntegral([str1 boundingRectWithSize:CGSizeMake(cellWidth-8, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin context:nil]).size;
NSLog(#"%f,%f",sizeName.height,sizeName1.height);
if(sizeName.height > 100){
sizeName.height = 70;
}
return CGSizeMake(cellWidth, sizeName.height + sizeName1.height + 110);
}
else{
CGRect screenRect = [[UIScreen mainScreen] bounds];
CGFloat screenWidth = screenRect.size.width;
float cellWidth = screenWidth;
CGSize size = CGSizeMake(cellWidth, 182);
return size;
}
Thank you for your suggestions friends.
Really it's better to use tableview for this but unfortunately after using collection view for a previous design the requirement changed like this. So, I struggled.
I have added a UITextView inside a UIView. UIView has some height depending upon screen sizes. UITextView can have more or less text. So I want to make the height of UITextView dynamic so if text is more then it should have more height but it should be less than the height of main view . If text is less then it should have less height.
Size a UITextView to its content programmatically:
UITextView *textView = [[UITextView alloc] initWithFrame:CGRectMake(100, 100, 100, 100)];
[textView setDelegate:self];
[textView setText:#"your long text"];
[textView setScrollEnabled:NO];
[self.view addSubview:textView];
CGFloat fixedWidth = textView.frame.size.width;
CGSize newSize = [textView sizeThatFits:CGSizeMake(fixedWidth, MAXFLOAT)];
CGRect newFrame = textView.frame;
newFrame.size = CGSizeMake(fmaxf(newSize.width, fixedWidth), newSize.height);
textView.frame = newFrame;
If you are using textview to display multilines of text with scrolling disabled, It is nothing more than a UILabel. I suggest you to use UILabel for the purpose.
In the storyboard, set the constraints as follows:
and set the line break as word wrap:
Same as the first answer, but in Swift 4:
let screenSize = UIScreen.main.bounds
let textView = UITextView.init(frame: CGRect(x: 1, y: 40, width: screenSize.width, height: screenSize.height))
textView.delegate = self as? UITextViewDelegate
textView.isScrollEnabled = false
view.addSubview(textView)
let fixedWidth = textView.frame.size.width
let newSize: CGSize = textView.sizeThatFits(CGSize(width: fixedWidth, height: CGFloat(MAXFLOAT)))
var newFrame = textView.frame
newFrame.size = CGSize(width: CGFloat(fmaxf(Float(newSize.width), Float(fixedWidth))), height: newSize.height)
Try with this
-(void)dynamicTextSize{
UITextView *textView = [[UITextView alloc]initWithFrame:CGRectMake(200, 300, 200, 30)];
textView.center = self.view.center;
[self.view addSubview:textView];
NSString *string = #"This is pour text.a hjajksdkja kajhdsjk akjdhs jakhd skjahs ajkdhsjkad hskja akjdhs ajkhdjskar";
textView.text = string;
//UIFont *font = [UIFont fontWithName:#"Arial" size:16.0f];
NSDictionary *attrDict = [NSDictionary dictionaryWithObjectsAndKeys:textView.font, NSFontAttributeName, nil];
textView.backgroundColor = [UIColor lightGrayColor];
CGRect frame = [textView.text boundingRectWithSize:CGSizeMake(textView.frame.size.width, 10000) options:NSStringDrawingTruncatesLastVisibleLine|NSStringDrawingUsesLineFragmentOrigin attributes:attrDict context:nil];
CGRect mFrame = textView.frame;
mFrame.size.width = frame.size.width;
mFrame.size.height = frame.size.height;
textView.frame = mFrame;
//NSLog(#"frame2:%#",NSStringFromCGRect(textView.frame));
}
I have a UILabel as subview of UIButton and I am passing the value
from another view and populating in UILabel. Now, I want that UILabel
must change its height based on the content.If text is "Hello" it must
be in 1 line but if text is " my text is too long to fit in the
label", it must change its size. I have used
[self.addressLabel sizeToFit];
But for this i need to leave empty space below UILabel. Simply what I
want is that when text strength increases,size of UILabel and UIView
must expand.
Using below you can get the height of the label
text - text of the label
font - font used in label
width - width of the label
-(float) getHeightForText:(NSString*) text withFont:(UIFont*) font andWidth:(float) width{
CGSize constraint = CGSizeMake(width , 20000.0f);
CGSize title_size;
float totalHeight;
SEL selector = #selector(boundingRectWithSize:options:attributes:context:);
if ([text respondsToSelector:selector]) {
title_size = [text boundingRectWithSize:constraint
options:NSStringDrawingUsesLineFragmentOrigin
attributes:#{ NSFontAttributeName : font }
context:nil].size;
totalHeight = ceil(title_size.height);
} else {
title_size = [text sizeWithFont:font
constrainedToSize:constraint
lineBreakMode:NSLineBreakByWordWrapping];
totalHeight = title_size.height ;
}
CGFloat height = MAX(totalHeight, 40.0f);
return height;
}
and create a frame using the height
CGRect frame = questionTitleLbl.frame;
float height = [self getHeightForText:questionTitleLbl.text
withFont:questionTitleLbl.font
andWidth:questionTitleLbl.frame.size.width];
float gap = 2;
cell.questionTitleLbl.frame = CGRectMake(frame.origin.x,
frame.origin.y,
frame.size.width,
height);
Here is the way that i handle this issue:
UILabel *sight = (UILabel *)[cell viewWithTag:100];
sight.text=tmpGroup.title;
sight.frame =CGRectMake(sight.frame.origin.x, sight.frame.origin.y, 191, 21);
sight.font = [UIFont fontWithName:#"RobotoSlab-Bold" size:10];
sight.numberOfLines=0;
sight.lineBreakMode=NSLineBreakByWordWrapping;
[sight sizeToFit];
Use this code its very easy and updated with ios8
add this method to your appconstant file
inline static CGSize getLabelHeightForFont(NSString *fontName,NSString* str, float fontSize, float lblWidth)
{
NSString *text = str;
CGFloat width = lblWidth;
UIFont *font = [UIFont fontWithName:fontName size:fontSize];
NSAttributedString *attributedText =
[[NSAttributedString alloc]
initWithString:text
attributes:#
{
NSFontAttributeName: font
}];
CGRect rect = [attributedText boundingRectWithSize:(CGSize){width, CGFLOAT_MAX}
options:NSStringDrawingUsesLineFragmentOrigin
context:nil];
return rect.size;
}
and finally use this code for dynamic create UILabel
CGFloat lbl_height = getLabelHeightForFont(#"System- System", address, 15, lbl_address.frame.size.width);
lbl_address.numberOfLines = 0;
lbl_address.textAlignment = NSTextAlignmentLeft;
[lbl_address setLineBreakMode:NSLineBreakByWordWrapping];
lbl_address.frame = CGRectMake(lbl_address.frame.origin.x, lbl_address.frame.origin.y, lbl_address.frame.size.width, lbl_height+5);
This is the very simplest function for getting dynamic height for labels. You can just use this function.
Here ceil is the predefind function for returns the smallest integer value.
And MAXHEIGHT is maximum height for uilabel for example you can give 1000 also for future caluclations...
-(CGFloat) getHeightForLabels : (UILabel *) label
{
CGSize widthMaxHeight = CGSizeMake(label.frame.size.width, MAXHEIGHT);
CGSize size;
NSStringDrawingContext *context = [[NSStringDrawingContext alloc] init];
CGSize boundingRect = [label.text boundingRectWithSize:widthMaxHeight
options:NSStringDrawingUsesLineFragmentOrigin
attributes:#{NSFontAttributeName:label.font}
context:context].size;
size = CGSizeMake(ceil(boundingRect.width), ceil(boundingRect.height));
return size.height;
}
i am displaying different items in custom table cell. when i try to display multiline uilabel text. it si only showing single line. even though i calculate the label height
also i try to set new frame with new height after calculation.
my code is as follows:
+(CGRect )getlabelHeight:(CGRect)frame withFontName:(NSString *)font andFontSize:(float)fontSize andText:(NSString *)text
{
CGSize constrainedSize = CGSizeMake(frame.size.width, 9999);
NSDictionary *attributesDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
[UIFont fontWithName:font size:fontSize], NSFontAttributeName,
nil];
NSMutableAttributedString *string = [[NSMutableAttributedString alloc] initWithString:text attributes:attributesDictionary];
CGRect requiredHeight = [string boundingRectWithSize:constrainedSize options:NSStringDrawingUsesLineFragmentOrigin context:nil];
if (requiredHeight.size.width > constrainedSize.width) {
requiredHeight = CGRectMake(0,0, constrainedSize.width, requiredHeight.size.height);
}
CGRect newFrame = frame;
newFrame.size.height = requiredHeight.size.height;
frame = newFrame;
return frame;
}
my tabelview method is as follows:
CGRect descFrame=[Utility getlabelHeight:CGRectMake(65,35+titleFrame.size.height, 250, 20) withFontName:appFont andFontSize:15 andText:[[allComments objectAtIndex:indexPath.row]valueForKey:#"comment"]];
NSLog(#"%# \n %f",[[allComments objectAtIndex:indexPath.row]valueForKey:#"comment"],descFrame.size.height);
[cell.title setFont:[UIFont fontWithName:appFont size:15]];
[cell.title setText:[[allComments objectAtIndex:indexPath.row]valueForKey:#"comment"]];
[cell.title setLineBreakMode:NSLineBreakByWordWrapping];
[cell.title setNumberOfLines:0];
[cell.title setFrame:descFrame];
[cell.title setTextColor:[UIColor blackColor]];
Please help me!!1 i am screwed...
thanks you!!!
I am working on a project to make the NSString on UILabel Width and Height dynamically.
I tried with:
NSString *text = [messageInfo objectForKey:#"compiled"];
writerNameLabel.numberOfLines = 0;
writerNameLabel.textAlignment = UITextAlignmentRight;
writerNameLabel.backgroundColor = [UIColor clearColor];
CGSize constraint = CGSizeMake(296,9999);
CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE]
constrainedToSize:constraint
lineBreakMode:UILineBreakModeWordWrap];
NSLog(#"sizewidth = %f, sizeheight = %f", size.width, size.height);
NSLog(#"writerNameLabel.frame.size.width 1 -> %f",writerNameLabel.frame.size.width);
[writerNameLabel setFrame:CGRectMake(writerNameLabel.frame.origin.x, writerNameLabel.frame.origin.y, size.width, size.height)];
CGRect labelFram = writerNameLabel.frame;
labelFram.origin.x = cell.frame.size.width - writerNameLabel.frame.size.width - 80;
writerNameLabel.frame = labelFram;
NSLog(#"writerNameLabel.frame.size.width 2-> %f",writerNameLabel.frame.size.width);
Please see the green bubble not the grey one.
Still not right.
The code for bubble
bubbleImageView.frame = CGRectMake(writerNameLabel.frame.origin.x, writerNameLabel.frame.origin.y, writerNameLabel.frame.size.width+15, writerNameLabel.frame.size.height+5);
Please Advise! Thanks!
That's because you did not reuse the table cell, the structure should be like:
NSString *text = [messageInfo objectForKey:#"compiled"];
if(cell == nil)
{
writerNameLabel.numberOfLines = 0;
writerNameLabel.textAlignment = UITextAlignmentRight;
writerNameLabel.backgroundColor = [UIColor clearColor];
[cell addSubview:writerNameLabel];
}
else {
writerNameLabel = (UILabel *)[cell viewWithTag:WRITER_NAME_LABEL_TAG];
}
CGSize constraint = CGSizeMake(296,9999);
CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE]
constrainedToSize:constraint
lineBreakMode:UILineBreakModeWordWrap];
[writerNameLabel setFrame:CGRectMake(writerNameLabel.frame.origin.x, writerNameLabel.frame.origin.y, size.width, size.height)];
I've been gone through and answered some of your question, that's correct way to write your tableview controller. And your problem will be solved.