I'm doing something that requires storing some text entered in a UITextView. It all works fine until the text is restored, then it is not wrapped in the UITextView (like it did when it was entered) but is truncated (just like a UITableViewCell does by default, tail truncation).
Once the text is in the UITextView, it is saved to a Core Data managed object with
self.note.text = textNoteTableView.text;
On creating the UITextView (which lives in a custom UITableViewCell)
UITextView *textView = (UITextView*)[cell viewWithTag:1];
textView.text = self.note.text;
The text seems fine and I can catch it being saved and being restored OK in the debugger. What I need to have happen is for the text to be displayed in the UITextView just like it was when originally entered, wrapped and not truncated. I have not set any properties on this object so I can't work out why it is not just behaving the way it would when a keyboard is the data source, or when it is restored from xib if I leave in the
Lorem ipsum dolor default text.
- (void)textViewDidChange:(UITextView *)textView
{
textView.frame = CGRectMake(....); //set textView's frame to your original size
}
Above code will fix this problem.
The behavior comes from having the UITextView inside the UITableViewCell - I chose to do it a different way as I saw no solutions in all the reports I read.
Related
I am working on a simple storyboard prototype. My TableViewController uses Dynamic Prototype as Content.
I have a cell with 4 label of which two will be set in code (the label text). The height of the cell will be calculated in code too. The Line Breaks are set to Word Wrap and everything's working fine with the default values (System 17.0):
see here:
..but if I change the Font Size of the "Fantasy Street..." label it will not break any more instead it just will be cut off!
see here: with System Font 16
Lines are set to 0
Word Wrap is still active
.. I also tried to do it manually in code but no change.
Does anyone have an explanation for that?
****edited:** when I add
myLabel.frame = CGRectMake(t.origin.x, t.origin.y, t.size.width, t.size.height *2);
to the cellForRowAtIndexPath I still see the cut off label. But if I then scroll the table view so the label is outside the viewable area shortly it will be displayed with the complete text when it is visible again.
By the way, I am working with viewTags, so I don't have a dedicated Cell Class e.g. UILabel *myLabel = (UILabel *)[cell viewWithTag:2];
You should check UILabel width; the width should be less than that of the value. Then like this:
(void) viewWillLayoutSubviews {
_landPhoneTips.preferredMaxLayoutWidth = _landPhoneTips.bounds.size.width;
}
I spent hours dealing with this identical problem before finally sorting it out last evening. After changing the font size, you must select the UILabel within the storyboard and select Edit > Size to Fit Content, even if you had already previously done so! In doing so you apparently reset some setting that gets messed up when changing the font size. Once done, the UILabel will wrap as it did previously.
How would I go about adding text to a UITextView without replacing the previous text?
So far I have a UITextView and a UIButton that adds the text to the UITextView, but I would like the text field to append more text every time you hit the button instead of completely deleting the text and replacing it.
Here are some ways to overcome obstacles in iOS development:
Look at the documentation for the particular class you're trying to manipulate. In this case, UITextView documentation can be found within Xcode or online.
Command-Click on UITextView or any other object anywhere in your code, and it will bring you to the header file for that class. The header file will list every public method and property.
Look at your existing code. I'm assuming that since you have a button that adds text to a UITextView, you understand how to set its text. 99% of the time you'll find that any setter (mutator) methods will have a corresponding getter (accessor) method. In this case, UITextView has a method called setText: and a matching method just called text.
Finally, NSString has a convenience method called stringWithFormat: that you can use to concatenate (join) two strings, among other very useful things. %# is the format specifier for a string. For example, to combine two strings, stringOne and stringTwo, you could do the following:
NSString *string = [NSString stringWithFormat:#"%# %#", stringOne, stringTwo];
I will leave you to come up with the answer as to how to combine NSString stringWithFormat: and UITextField text and setText: to achieve what you'd like to accomplish.
Edit:
The OP was unable to figure out how to utilize the information above so a complete code sample has been provided below.
Assume you have synthesized property (possibly an IBOutlet) UITextView that you have initialized called myTextView. Assume also that we are currently in the method scope of the method that gets called (your IBAction, if you're using IB) when you tap your UIButton.
[myTextView setText:[NSString stringWithFormat:#"%# %#", myTextView.text, #"this is some new text"]];
Explanation: myTextView.text grabs the existing text inside of the UITextView and then you simply append whatever string you want to it. So if the text view is originally populated with the text "Hello world" and you clicked the button three times, you would end up with the following progression:
Initial String: #"Hello world"
Tap one: #"Hello world this is some new text"
Tap Two: #"Hello world this is some new text this is some new text"
Tap Three: #"Hello world this is some new text this is some new text text this is some new text"
If all you are doing is appending text, you might find this a little simpler:
myTextView.text = [myTextView stringByAppendingString:#"suffix\n"];
I found this on UITextView insert text in the textview text. Sadly, I have not found a way to append text directly without a wholesale replacement of the text in the UITextView. It bugs me that the effort involved is proportional to the total length of the existing string and the suffix, rather than just the suffix.
A more efficient way to append text is to use replace() at the end:
extension UITextInput {
func append(_ string : String) {
let endOfDocument = self.endOfDocument
if let atEnd = self.textRange(from: endOfDocument, to: endOfDocument) {
self.replace(atEnd, withText: string)
}
}
}
#Jack Lawrence: Your answer doesn't cover the question completely.
The example below will not scroll neatly while running off the bottom when called every second:
self.consoleView.text = [NSString stringWithFormat:#"%#%#%#", self.consoleView.text, data, #"\n"];
[self.consoleView scrollRangeToVisible:NSMakeRange(self.consoleView.text.length, 0)];
This is caused by setText replacing the original text every time thereby resetting associated contentOffsets etc.
This was possible prior to iOS 7, but since iOS 7 it seems that setText cannot be prevented from exhibiting jumpy behaviour. Appending does not seem to be an option for TextViews in this scenario?
I, sorry for my english I'm not very good, I code in objective-c, I try to set text in a uiscrollview and update the content of the scrollview right after. I have a loop and I set the text with the method [uiscrollview setText:] in that loop, but the text is only displayed in the scrollview at the end of the loop...
thanks
Alex
Since when the UIScrollView has a text property?.. Do you mean UITextView?
If the loop is in main thread then the UI will probably be updated only after completing the method (with the loop inside) - just like you write. Possible solution might be to execute the method with the loop in the background thread (e.g. [self performSelectorInBackground:#selector(updateScrollViewInLoop) withObject:nil];) and inside the loop update the scroll view in the main thread ([uiscrollview performSelectorOnMainThread:#selector(setText:) withObject:text waitUntilDone:YES];).
You might also add [uiscrollview setNeedsDisplay]; line right after updating the text. I'm not sure it will help because of the second point above and, in addition, I think that this line is called in the background anyway once you change the content of the scroll view...
You first need to build your string, then call set text. Set text first clears the existing text. Also, I am assuming you mean UITextView (a subclass of UIScrollView) as it has a 'text' property. Try:
NSString *text = [NSString string];
for (NSString *line in lines)
{
text = [text stringByAppendingString:line];
}
[self.textScrollView setText:text];
I need to format text in a label like this:
username: some text from this user. This will
create additional lines of text that will go
on and on and on.
Where "username" is bold. This will go into a UILabel, which is in a custom table cell. Is there a way to get this type of layout?
For this relatively simple case, you might be able to fake it. Have one label with the bold username, and another label with the plain text in the same position. Insert enough spaces before the plain text to leave room for the username. You can use UIStringDrawing methods to measure the bold text and the spaces.
CGSize usernameSize = [theUsername sizeWithFont:theBoldUsernameFont];
CGSize spaceSize = [#" " sizeWithFont:thePlainCommentFont];
NSString *indentedComment = [NSString stringWithFormat:#"%*s%#" , (int)ceil( usernameSize.width / spaceSize.width ) , "" , theComment];
If you use plain UILabel it's not available. Use two labels for this task.
You need to use either a UIWebView or CoreText to do this kind of advanced text layout. A web view has a lot of overhead but is most flexible and you can't use it effectively in a UITableView cell. CoreText is low level and not that well documented. You could ditch the table view and just lay out the table with CSS and HTML in the web view, which is how I do it.
You can still use a UITableViewCell but have the cell use a UIWebView subview. Set up a custom cell subclass with a clever setter method that allows you to send nsstrings to the method with turns those into a pretty formatted view.
Does anyone know how to create a text field that has a UIImage background and does word-wrapping?
It appears that word-wrapping is not available on UITextField, while a background image is not available for UITextView! Also, it should change the size of the control or at least alert that the number of lines changed so that a delegate could change its size..
An example of such control is the input field for messages in the SMS application.
Edit: the code should also get the text field to always show the text being edited. Apparently, when UITextView changes size while editing it somehow loses focus on the current text.
Thanks ahead!
Aviad.
Word-wrapping is not available on UITextField because UITextField only supports single-line text.
Use a UITextView. Make textView.backgroundColor = [UIColor clearColor]. Add the UIImage first, then the UITextView on top of it. Make sure the sizes are correct, and you should be fine.
As for changing the size of the UITextView, in your UITextViewDelegate, do something like this:
- (void)textViewDidChange:(UITextView *)textView
{
NSString *s = textView.text;
CGSize testSize = CGSizeMake(textView.frame.size.width, NSIntegerMax);
CGSize neededSize = [s sizeWithFont: textView.font constrainedToSize: testSize lineBreakMode: UILineBreakModeWordWrap]; // or UILineBreakModeCharacterWrap?
if (neededSize.height > testSize.height)
{
// grow textView
textView.frame = CGRectMake(textView.frame.origin.x, textView.frame.origin.y, neededSize.width, neededSize.height);
// then adjust the image size -- something like this
imageView.frame = textView.frame
}
}
Eventually I wrote my own code, which worked to some degree with a lot of workarounds (changing the focus for example, resizing when removing all the text again, etc). If anyone's interested, I'll post the code.
In other news, just today I saw in a different question around here something called IFVerticallyExpandingTextField. The name was promising, the code is here, and I'll give it a look. Anyone with a similar problem, you might want to see this too.
My mistake, I didn't read it carefully enough: IFVerticallyExpandingTextField is for the Mac, not the iPhone.