I am trying to wrap a TextField into multiple lines when it is not being edited.
The following code works fine while the user is in editing mode:
TextField(
keyboardType: TextInputType.multiline,
maxLines: null,
)
but when the user leaves the page and comes back, the controller's text inside the TextField is fitted on one line, overflowing horizontally - making it hard for a user to append text. How do I get the text of a TextField to wrap on multiple lines when it is not being edited?
If the textfield is inside a row please wrap it with an flexible or sized box widget.
Edit
Add minLines: 1, and maxLines : 20, by the docs setting it to null means its a single line just displayed in different lines.. setting a minLine and maxLines should work
Related
When I click on the text field, the second text field becomes very small
Change the flex value of first expanded widget to 1 instead of 0.
Edit
Remove expanded from both the widgets. In first text field add maxLines : 1 and in second textfield add maxLines : null.
Remove Expanded Widgets from both TextField and Wrap main Column to SingleChildScrollView to avoid getting overFlow errors
I'm working on a Markdown editor in Flutter, built on top of the TextField widget.
A feature I want to implement is configurable spacing between paragraphs (i.e. after newlines), so that the user doesn't need hit return twice and manually insert an empty line between paragraphs, as is required by Markdown. Instead, I want to create the illusion of an empty line by increasing the space between paragraphs and automatically insert them during export.
If you've used Notion before, it does something similar. So does MarkText.
How would that be accomplished in Flutter? Can it be done with the out-of-the-box TextField, or do I need to implement a custom solution around EditableText?
I've messed around with the height property of the TextField's TextStyle style and StrutStyle strutStyle properties, but both seem to affect the text at the line level, so what I get is the same as, say, changing the line spacing in a Word document. Not what I'm going for.
What you can do is listen to the TextField changes, and detect the enter/return press, and you can do that using the built-in onChanged Listener, so you can create a TextField with a TextEditingController, and in the onChanged handler, you can detect the press by checking if the string finishes by \n, and here you can manipulate your string as you want, i.e. you can add empty lines by appending another \n.
Example:
TextEditingController co = TextEditingController();
TextField(
maxLines: 100,
controller: co,
onChanged: (val){
if(val.endsWith('\n')){
co.text = co.text+'\n'; //append new line
co.selection = TextSelection.fromPosition(TextPosition(offset: co.text.length));//set the pointer at the end of the string
}
},
),
I have a TextField in my Flutter-app with multiline enabled
TextField(
keyboardType: TextInputType.multiline,
maxLines: null,
)
Whenever I have spaces at the end of a line (except the last line), they are not being displayed.
By that I mean the cursor sticks to the letters as if those spaces weren't there.
I will attach a screenshot. There are actually 5 spaces added where I painted the red line but you can't see them. If I type another letter, then you will be able to see them.
Does anyone know how to fix this?
Sorry if the image is big :) if you know how I can make it smaller please tell me, so I can do that the next time.
I am trying to add line numbers to text field on Flutter, like on any text editors. I have text that overflows to next line, so I want to show where lines start and end.
First way that came to my mind was to separate the screen into two columns, one for line numbers on left and one for right for the textfield. However, due to screen size differences, I can't know when a line will overflow.
Is there any more formal way to do it?
First, initialize a List of TextField and an currentLine integer variables. TextField must contain properties named textInputAction and onEditingComplete. So each time you press enter, it is considered as finished with current TextField, creating a new TextField and add it into List of TextField and will move the focus to the new TextField. Line numbers will be coming from inputDecoration of each TextField and the value will be from currentLine variable. curentLine++ also ran inside onEditingComplete.
Check out this article about LineMetrics.
As you can see, this gives you a list of metadata concerning your rendered text lines. Using the line numbers and the hardBreak attribute together, you can compute the line numbers to display in the left hand column.
you can use TextSelection()
TextSelection selection = TextSelection(baseOffset: 0, extentOffset: text.length);
List<TextBox> boxes = textPainter.getBoxesForSelection(selection);
int numberOfLines = boxes.length;
get numberOfLines in your Text, count, and show for each line.
Hello and thanks for any help, I'm trying to put an ellipsis at the end of a paragraph, it seems so easy to do in Flutter... but, in my case, it doesnt work with ellipsis.
It works as expected with TextOverflow.clip & TextOverflow.fade, I tried everything (put inside fixed container, flexible container...), and every, supossedly, working code I found seem to not work in my case, maybe a bug of 1.9? I have something like this:
Text(
'Tree lines text for demostration puropuse,tree lines text for demonstration purpose, lines text for demostration puropuse',
overflow: TextOverflow.ellipsis,
maxLines: 3,
),
It works great with Text Overflow.clip & Text Overflow.fade but, with exactly the same environment, it doesn't work with Text Overflow.ellipsis.
The thing is you do not have required character to show elipsis. In another word, as name suggest your text is not overflowed to show elipsis. So, try by reducing maxLines: 3, to 1.
If you have specific character limit, you can check for the text length and add few dots by substring the text(And of course this is not preferable solution).