I'm trying to add an image to an attributed string:
NSTextAttachment *locationIcon = [[NSTextAttachment alloc] init];
locationIcon.image = [UIImage imageNamed:#"location-pin-icon"];
NSAttributedString *iconString = [NSAttributedString attributedStringWithAttachment:locationIcon];
[string appendAttributedString:iconString];
NSAttributedString *locationNameString = [[NSAttributedString alloc] initWithString:#"some text" attributes:linkAttributes];
[string appendAttributedString:locationNameString];
Then I simply set myLabel.text = string; (where myLabel is a TTTAttributedLabel)
location-pin-icon is a valid image (I've checked it in debugging too). However, the location pin icon is not being displayed in the label (the following "some text" is displayed perfectly though, and linkAttributes is just a collection of system font with a custom blue color). I've also tried manually setting bounds to the text attachment, or leaving a space before the text, but nothing seems to work.
What am I doing wrong?
It was apparently due to implementation of TTTAttributedLabel. The library seems broken. When I've switched from it, the attachment started displaying correctly.
Related
I'm trying to get a custom view in an attributed string to be displayed on a textView. I am able to add an image with an NSTextAttachment, but it isn't what I want. I have a custom view that supports Gif's and Animated PNGs that I'd like to display between text.
Example:
text text text [customView] text [customView] text. <- In text view, preferably in attributed string
I would love some guidance as to where I should search specifically. So far I've seen related issues...
Subclass NSTextAttachment: How to subclass NSTextAttachment?
Use NSTextAttachmentContainer..?
NSTextAttachmentCell - Only OSX
Do manipulation in the text view
First, use NSAttributedString or NSMutableAttributedString to show your RichText in subviews (such as UITextView/UILabel)
Then, use NSTextAttachment to replace your image-script in text.
NSString *egText = #"hello [this_is_an_img_script]";
NSMutableAttributedString * destStr = [[NSMutableAttributedString alloc] initWithString:egText];
NSTextAttachment *attachment = [[NSTextAttachment alloc] initWithData:nil ofType:nil];
attachment.image = [UIImage imageNamed:[this_is_an_img_script]];
NSAttributedString *textAttachmentString = [NSAttributedString attributedStringWithAttachment:attachment]; //make your image to an attributedString
[destStr replaceCharactersInRange:range withAttributedString:textAttachmentString];
at last: [YourLabel(or YourTextView) setAttributedString:destStr];
BTW: if you use the YYkit for the RichText, you cannot use the YYAttachMentString to replace NSAttachMentString, these are different things, the UITextView(UILabel) cannot load the YYAttachMentString.
I'm looking for some way to show my gifs with the UITextView (because YYKit cannot load and preview netimage with a url, YYKit always show empty which should be a netImage, cripes!)
I have a full-width label, with dynamic text so it can be two characters or ten. I need to display an image inline on the left part, always 10px away from the first letter. Please see the example below.
For now, I just put a full-width label and at runtime, I measure the text width with boundingRectWithSize: method, and adjust my image constraints programmatically.
Do you have any good idea to build this kind of interface without measuring manually the text width?
Objective - C
You can add image as text attachment.
NSTextAttachment *attachment = [[NSTextAttachment alloc] init];
UIImage *imageTest=[UIImage imageNamed:#"arrow.png"];
attachment.image = imageTest;
NSMutableAttributedString *myString= [[NSMutableAttributedString alloc] initWithString:#"My label text "];
NSMutableAttributedString *myStringWithArrow = [[NSMutableAttributedString alloc]initWithAttributedString:[NSAttributedString attributedStringWithAttachment:attachment]];
[myStringWithArrow appendAttributedString:myString];
yourLabel.attributedText = myStringWithArrow;
Swift
var attachment = NSTextAttachment()
var imageTest = UIImage(named:"arrow.png")
attachment.image = imageTest
var myString = NSMutableAttributedString(string: "My label text ")
var myStringWithArrow = NSMutableAttributedString(attributedString: NSAttributedString(attachment: attachment))
myStringWithArrow.appendAttributedString(myString)
lblAttributed.attributedText = myStringWithArrow
Output :
#ashish-kakkad's answer is perfect but unless you need a pixel-perfect image you can use a Unicode symbol:
[self.button1 setTitle:#"\u27A4 Button" forState:UIControlStateNormal];
Most of the Unicode symbols with codes could be found here http://unicode-table.com/
I have a UILabel that will contain various lengths of text. I need to place an image in the upper left corner of the text and have the text wrap around it. How can I do this? All I could find was using a UITextView which I don't want to use since it's static text.
This is a perfectly reasonable use of a UITextView. Your reasons for hesitation to use it are unclear. You can make the UITextView non-editable and non-selectable; the user will not know that it is a UITextView as opposed to to a UILabel.
If you don't like that solution, then what I would do is use, instead of a UILabel, a custom view that draws the text. You can draw the text with Text Kit and thus you can take complete charge of how the text draws. In particular, you can cause it to wrap however you like, including not drawing the text in the corner (exclusion path on the text container).
You can achieve this using NSTextAttachment and attributed text.
NSMutableAttributedString *myText = [[NSMutableAttributedString alloc] initWithString:labelStr];
NSTextAttachment *attachment = [[NSTextAttachment alloc] init]
attachment.image = yourImage;
NSAttributedString *attachmentLock = [NSAttributedString attributedStringWithAttachment:attachment];
NSMutableAttributedString *lockString = [[NSMutableAttributedString alloc] initWithAttributedString:myText];
//set your image range within the text. modify it till you get it right.
NSRange range = NSMakeRange(0,[labelStr length]);
[lockString replaceCharactersInRange:NSMakeRange(range.location, 1) withAttributedString:attachmentLock];
yourLabel.attributedText = lockString;
It appears that this has been asked and not answered before, but the question is ancient and there have been many Xcode / iOS updates since then, so I am going to give this a shot.
I have a simple view controller laid out. There is a single View that contains a read-only Text View with some instructions on how to use the app. I would like to intersperse some images in the scrolling text view to refer to the buttons and other elements that I am referring to in the instructions.
Here is the view:
So for instance, when the instructions refer to the green start button, I would like to insert an image of that button inline with the rest of the text.
I am using Xcode 5.1.1 and of course storyboards. Thanks in advance for any suggestions.
You can use the NSAttributedString with NSTextAttachment to attach an image to the text
NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:#"press to start"];
NSTextAttachment *imageAttachment = [NSTextAttachment new];
imageAttachment.image = [UIImage imageNamed:#"AnyImage.png"];
NSAttributedString *stringWithImage = [NSAttributedString attributedStringWithAttachment:imageAttachment];
[attributedString replaceCharactersInRange:NSMakeRange(5, 1) withAttributedString:stringWithImage];
self.textView.attributedText = attributedString;
I am using the new Text Kit API to add attachments to some attributed text:
// create an attachment for each image
NSTextAttachment* ta = [NSTextAttachment new];
ta.image = [UIImage imageNamed:#"imageName"];
// add to the attributed text string
NSAttributedString* rep = [NSAttributedString attributedStringWithAttachment:ta];
[myAttributedTextString appendAttributedString:rep];
This works fine, I can see my image rendered in the output. However, I cannot find any way to specify the image alignment, or wrap text around the image.
Any ideas?
NOTE: Text attachments are different from exclusions paths - a text attachment is part of the 'model', i.e. it is part of the attributed text string that the layout manager performs text layout on. Whereas an exclusion path is part of the view.
NSTextAttachments are treated as a single character by NSAttributedString. So, in order to adjust their alignment you must do so as you would for text. It took me hours of fiddling with attachment.bounds (which I never could get to work properly) to finally figure this out. Here's an example of how to horizontally align an NSTextAttachment.
#def BETWEEN_SECTION_SPACING 10
// creates a text attachment with an image
NSTextAttachment *attachment = [[NSTextAttachment alloc] init];
attachment.image = [UIImage imageNamed:#"sample_image.jpg"];
NSMutableAttributedString *imageAttrString = [[NSAttributedString attributedStringWithAttachment:attachment] mutableCopy];
// sets the paragraph styling of the text attachment
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init] ;
[paragraphStyle setAlignment:NSTextAlignmentCenter]; // centers image horizontally
[paragraphStyle setParagraphSpacing:BETWEEN_SECTION_SPACING]; // adds some padding between the image and the following section
[imageAttrString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [imageAttrString length])];
After this, you would append imageAttrString to an existing attributed string and perhaps append another after it. One quirk is that because the attachment is a character it is not treated as its own paragraph. In order for that to be the case you will need to surround it with \n (newline characters). Just append these to both sides of the attachment's attributed string.
Hope that helps, it took me ages to figure out.
Try setting the bounds property to the image size.
Defines the layout bounds of the receiver's graphical representation in the text coordinate system.
So it should be:
ta.bounds = (CGRect) { 0, 0, ta.image.size };
ta.bounds = (CGRect) { 0, yPadding, ta.image.size };
change yPadding you need.
It can be negative when image's height is large than line height.