I would like to know what's the possible reason?
mAutoCommentLabel.text is nil or cellFont is nil?
UIFont* cellFont = mAutoCommentLabel.font;
NSAttributedString *attrStr = [[NSAttributedString alloc] initWithString:mAutoCommentLabel.text attributes:#{NSFontAttributeName: cellFont}];
CGRect rect =
[attrStr boundingRectWithSize:CGSizeMake(withWidth, CGFLOAT_MAX)
options:(NSStringDrawingUsesLineFragmentOrigin|NSStringDrawingUsesFontLeading)
context:nil];
int commentHeight = rect.size.height;
Crash log from app store heres:
Related
Hi i am reacreating the textsize with these code
CGSize textSize = [self.text sizeWithFont:self.font
constrainedToSize:self.frame.size
lineBreakMode:self.lineBreakMode];
the above is depreciate. how can we change it inorder to keep the purpose?
Any help is much appreciate. Thanks!
My whole function purpose is to align the UIlable top (vertical)
- (void)alignTop
{
CGSize textSize = [self.text sizeWithFont:self.font
constrainedToSize:self.frame.size
lineBreakMode:self.lineBreakMode];
CGRect textRect = CGRectMake(self.frame.origin.x,
self.frame.origin.y,
self.frame.size.width,
textSize.height);
[self setFrame:textRect];
[self setNeedsDisplay];
}
Use this
- (CGRect)boundingRectWithSize:(CGSize)size options:(NSStringDrawingOptions)options attributes:(nullable NSDictionary<NSString *, id> *)attributes context:(nullable NSStringDrawingContext *)context
OR use this
- (CGSize)sizeWithAttributes:(nullable NSDictionary<NSString *, id> *)attrs
this is an example
+ (CGSize)neededSizeForText:(NSString*)text withFont:(UIFont*)font andMaxWidth:(float)maxWidth
{
NSStringDrawingOptions options = (NSStringDrawingUsesFontLeading|NSStringDrawingUsesLineFragmentOrigin);
NSMutableParagraphStyle * style = [[NSMutableParagraphStyle alloc] init];
[style setLineBreakMode:NSLineBreakByWordWrapping];
[style setAlignment:NSTextAlignmentRight];
NSDictionary *textAttibutes = #{NSFontAttributeName : font,
NSParagraphStyleAttributeName : style};
CGSize neededTextSize = [text boundingRectWithSize:CGSizeMake(maxWidth, 500) options:options attributes:textAttibutes context:nil].size;
return neededTextSize;
}
I hope this helps
Hello I'm working on chat app in which user can send smiley (emoji) to other user. For text its working perfect but when it contains emoji then it is correct. I have used method for this
- (CGSize)getSizeForText:(NSString *)text maxWidth:(CGFloat)width font:(NSString *)fontName fontSize:(float)fontSize {
CGSize constraintSize;
constraintSize.height = MAXFLOAT;
constraintSize.width = width;
NSDictionary *attributesDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
[UIFont fontWithName:fontName size:fontSize], NSFontAttributeName,
nil];
CGRect frame = [text boundingRectWithSize:constraintSize
options:(NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading)
attributes:attributesDictionary
context:nil];
CGSize stringSize = frame.size;
return stringSize;
}
and the results are something like
As from images you can see what i want to say and what i need. I need some between two lines when there is emoji text in UILabel. Any help will be appreciated. Thanks in advance.
Edit: I have given answer on this. But if some have some quick hack for this then that will be great for me.
I have made a good work to do it manually and it looks good for me now. I have added linespacing for label text and it works good for me. I have set text like
NSMutableAttributedString* attrString = [[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:#"%#",message_text]];
NSMutableParagraphStyle *style = [[NSMutableParagraphStyle alloc] init];
[style setLineSpacing:4];
[attrString addAttribute:NSParagraphStyleAttributeName
value:style
range:NSMakeRange(0, [message_text length])];
lblChatMSG.attributedText = attrString;
and my method to get height of text is
- (CGSize)getSizeForText:(NSString *)text maxWidth:(CGFloat)width font:(NSString *)fontName fontSize:(float)fontSize {
CGSize constraintSize;
constraintSize.height = MAXFLOAT;
constraintSize.width = width;
NSMutableParagraphStyle * paragraphStyle = [[NSMutableParagraphStyle alloc] init];
paragraphStyle.lineBreakMode = NSLineBreakByWordWrapping;
paragraphStyle.alignment = NSTextAlignmentLeft;
paragraphStyle.lineSpacing = 4;
NSDictionary *attributesDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
[UIFont fontWithName:fontName size:fontSize], NSFontAttributeName,paragraphStyle,NSParagraphStyleAttributeName,
nil];
CGRect frame = [text boundingRectWithSize:constraintSize
options:(NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading)
attributes:attributesDictionary
context:nil];
CGSize stringSize = frame.size;
return stringSize;
}
And the result is
I just increased the required height of the label and adjusted its origin.
// Expand label to avoid cutoff emojis
label.frame.size.height += 8.0
label.frame.origin.y -= 4.0
Can anyone please help me to fix this warning?
'sizeWithFont:constrainedToSize:lineBreakMode:' is deprecated: first deprecated in iOS 7.0 - Use -boundingRectWithSize:options:attributes:context:
-(CGFloat)setLableSizeAccordingToText:(NSString*)text andSetX:(CGFloat)x Y:(CGFloat)y{
self.text = text;
CGSize maximumLabelSize = CGSizeMake(296, FLT_MAX);
CGSize expectedLabelSize = [text sizeWithFont:self.font constrainedToSize:maximumLabelSize lineBreakMode:self.lineBreakMode];
CGRect frame = CGRectMake(x, y, expectedLabelSize.width+lblHorizontalPadding , lblHeight);
self.frame = frame;
return expectedLabelSize.width + lblHorizontalPadding;
}
It is working for me
UILabel *myLabel;
CGSize textSize;
if (!SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(#"7.0")){
textSize = [myLabel.text sizeWithFont:[myLabel font]];
}else{
textSize = [myLabel.text sizeWithAttributes:[NSDictionary dictionaryWithObject:[myLabel font] forKey:NSFontAttributeName]];
}
Try using this
+ (CGSize)DescriptionHeight:(NSString *)str{
CGSize detailSize = [str boundingRectWithSize:CGSizeMake(300, MAXFLOAT)
options:NSStringDrawingUsesLineFragmentOrigin
attributes:#{
NSFontAttributeName:[UIFont fontWithName:#"Cronos Pro" size:14.0f]
}
context:nil].size;
return detailSize;
}
Or u can use in this way too
CGSize stringsize = [Your_Str_Value sizeWithAttributes:#{NSFontAttributeName: [UIFont systemFontOfSize:16.0f]}];
YourBtn.frame = CGRectMake(10, 5, stringsize.width, 44);
The new sizeWithAttributes combined with NSParagraphStyle should do the job for you.
NSMutableDictionary *attributes = [NSMutableDictionary new];
[attributes setObject:self.font forKey:NSFontAttributeName];
NSMutableParagraphStyle *paragraphStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
paragraphStyle.lineBreakMode = self.lineBreakMode;
//paragraphStyle.alignment = self.textAlignment; //uncomment this if you need specific text alignment
[attributes setObject:paragraphStyle forKey:NSParagraphStyleAttributeName];
CGSize expectedLabelSize = [text sizeWithAttributes:attributes];
I've create a UILabel.When the text is too long, I hope to use (.. more) to replace (...).I have already tried it,but I did not demand results.
UILabel * writtenContentLabel = [[UILabel alloc]initWithFrame:CGRectMake(10, 0, ScreenWidth - 20 , 70)];
writtenContentLabel.numberOfLines = 0;
writtenContentLabel.text = [str stringByAppendingString:#"More"];
writtenContentLabel.lineBreakMode = NSLineBreakByTruncatingMiddle;
[self addSubview:writtenContentLabel];
How do I do？
You have to use a custom label view to achieve this.
Replace your UILabels with any of the following custom labels. Both of them support custom truncationTokenString method.
MDHTMLLabel https://github.com/mattdonnelly/MDHTMLLabel (I recommend this control)
TTTAtributtedLabel https://github.com/mattt/TTTAttributedLabel
You can change the default ellipsis using,
[label setTruncationTokenString:#"...More"];
You can use the following method:
- (NSString*)stringWithElipsisMore:(NSString*)oringinalStr withLabel:(UILabel*)label
{
CGRect rect = label.frame;
NSMutableParagraphStyle *paragraphStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
NSDictionary * attributes = #{NSFontAttributeName:label.font, NSParagraphStyleAttributeName:paragraphStyle};
const CGSize maxSize = CGSizeMake(rect.size.width, CGFLOAT_MAX);
CGSize stringSize = [oringinalStr boundingRectWithSize:maxSize
options:NSStringDrawingUsesLineFragmentOrigin
attributes:attributes
context:nil].size;
if (stringSize.height > rect.size.height) {
float proportion = rect.size.height / stringSize.height;
NSString *subStr = [oringinalStr substringToIndex:oringinalStr.length * proportion];
CGSize stringSize = [subStr boundingRectWithSize:maxSize
options:NSStringDrawingUsesLineFragmentOrigin
attributes:attributes
context:nil].size;
while (stringSize.height < rect.size.height) {
subStr = [oringinalStr substringToIndex:subStr.length + 1];
stringSize = [subStr boundingRectWithSize:maxSize
options:NSStringDrawingUsesLineFragmentOrigin
attributes:attributes
context:nil].size;
}
subStr = [subStr substringToIndex:subStr.length - 1];
while (stringSize.height > rect.size.height){
subStr = [subStr substringToIndex:subStr.length - 1];
stringSize = [subStr boundingRectWithSize:maxSize
options:NSStringDrawingUsesLineFragmentOrigin
attributes:attributes
context:nil].size;
}
NSRange range = NSMakeRange(subStr.length - 7, 7);
NSString *subSubStr = [subStr stringByReplacingCharactersInRange:range withString:#"...more"];
return subSubStr;
} else {
return oringinalStr;
}
}
NSString *subStr = [self stringWithElipsisMore:str withLabel:writtenContentLabel];
writtenContentLabel.text = subStr;
I just want to know number of lines, given the font, constraints, and the text. Can I figure it out without creating a UILabel?
+ (int)numberOfLines:(NSDictionary *)data{
NSString *myString = [some string calculation];
CGSize sizeConstrain = CGSizeMake(some constrain calculation);
CGSize stringSize = [myString sizeWithFont:someFont constrainedToSize:sizeConstrain];
CGRect labelFrame = CGRectMake(0,
0,
stringSize.width,
stringSize.height + 2);
UILabel *label = [[UILabel alloc]initWithFrame:labelFrame];
label.text = myString;
return label.numberOfLines;
}
Yes
+ (int)numberOfLines:(NSDictionary *)data{
NSString *myString = [some string calculation];
CGSize sizeConstrain = CGSizeMake(some constrain calculation);
CGSize stringSize = [myString sizeWithFont:someFont constrainedToSize:sizeConstrain];
return (stringSize.height/someFont.lineHeight);
}
EDIT: I used this for UITextView and iOS7
- (CGFloat) getRowsForText:(NSString*) text{
CGFloat fixedWidth = 300;
UIFont *font = [UIFont fontWithName:#"HelveticaNeue" size:14];
NSMutableParagraphStyle *paragrapStyle = [[NSMutableParagraphStyle alloc] init];
paragrapStyle.alignment = NSTextAlignmentLeft;
textStepAttr = [NSDictionary dictionaryWithObjectsAndKeys:
font,NSFontAttributeName,
paragrapStyle, NSParagraphStyleAttributeName,
nil];
NSAttributedString *attributedText = [[NSAttributedString alloc] initWithString:text attributes:textStepAttr];
CGRect rect = [attributedText boundingRectWithSize:CGSizeMake(fixedWidth, MAXFLOAT)
options:NSStringDrawingUsesLineFragmentOrigin
context:nil];
return (rect.size.height / font.lineHeight) ;
}