I am developing a flutter app to display speed itself. But sometime, the speed isn't rendered correctly in the UI. This doesn't happen always but happens say 5-10% of the time.
I tried to add another text field, with lesser size below it(just to debug), and the same text renders there correctly.
2 screenshots - One correct and one with the bug
I am using a column widget to display the text and this is how I am building the children list:
List<Widget> children = [];
children.add(Container(
child: Text(listenerSpeedText,
style: TextStyle(color: Colors.lightGreen, fontSize: 100.00)),
padding: EdgeInsets.only(bottom: 5.00)));
children.add(Text(
'digitalSpeed: ' + listenerSpeedText,
style: TextStyle(
color: Colors.red,
fontSize: 25.00,
),
));
return children;
Any help would be appreciated. I am not sure what is going on. Do I need to give extra width or height to container?
Related
Disclaimer:
I am very new to flutter, this is my first solo project that I am creating. All other projects have only been very short tutorials. The problem I am having (described below) may seem like a very easy fix, but as I am new please do explain it in detail as best you can, being able to visualize what you are saying also helps (through code, diagrams etc). Thank you.
Problem:
Unable to get auto_size_text maxLines to work correctly. On top of this, unable to get MaxFontSize working.
Further Explanation
I am using the auto_size_text package, setup with the pubspec.yaml dependency: auto_size_text: ^2.1.0 and import: 'package:auto_size_text/auto_size_text.dart'. I also changed my pubspec.yaml environment from sdk: ">=2.12.0 <3.0.0" to sdk: ">=2.11.0 <3.0.0" to allow non null safe packages to work - as per direction of this tutorial.
I am creating a container inside of my app, inside of this container is a Column widget, inside the Column widget are several rows. One of these rows is intended as a title. The code for it is below:
Row( // Row is inside of a Column which is inside of a Container
children: [
const SizedBox(width: 55), // Used to create padding either side of text
Expanded(
child: FittedBox(
child: AutoSizeText(
'70 | Brighton - Abbotsford and Green Island', // Header Example
maxLines: 2, // Cannot get this to work, always remains one line
maxFontSize: 20, // Does not work, always resizes to max font in order to fill whole FittedBox
style: TextStyle(
fontSize: 20, // Unsure if I need this, adding or removing seems to have to effect.
color: color.AppColor.textMain.withOpacity(0.8),
fontWeight: FontWeight.bold,
),
),
),
),
const SizedBox(width: 55), // Used to create padding either side of text
],
),
With this code I get this result - Note that the blue line is another row above the title but still inside of the same Column widget.
Desired Result:
The font is far too small, so I want it to be split among two lines. I am designing this container to be reused and I will later change it so the text is imported from a CSV file so name lengths will be varied. They all need to be readable, and while it's fine for smaller titles (example), larger ones need to have a bigger font while still fitting inside the same boundaries, so two lines is required. As also mentioned, I am unable to get the maxFontSize working, resulting in shorter titles having too large of a font.
Attempted Solutions:
I have tired using a null safe version of auto_size_text but was unable to get it working (as it's a prerelease I assume it isn't functioning properly).
I have another solution without using auto_size_text package
SizedBox(
child: TextField(
controller: _yourController,
decoration: InputDecoration(
border: InputBorder.none,
contentPadding: EdgeInsets.all(8),
),
textInputAction: TextInputAction.done,
keyboardType: TextInputType.multiline,
maxLines: null,
),
),
keyboardType: TextInputType.multiline makes TextField can be resized automatically and move to new line if it reach max width, and
maxLines: null makes your text can be written with many lines, and then
decoration here i use to remove TextField box border
Solved
I solved my own problem almost accidently while playing around with the code I posted in the original question.
Solution:
Although not the most convenient, the solution is to replace the Expanded widget and FittedBox to a SizedBox. Below is the adjusted code including comments about changes made.
Row( // Row is inside of a Column which is inside of a Container
children: [
const SizedBox(width: 55), // Used to create padding either side of text
SizedBox( // Changed the Expanded and FittedBox to a sized box with a width of 280, source container has a width of 390, so text is allowed a width of 280 once you subtract the width 55 SizedBox's either side
width: 280,
child: AutoSizeText(
'70 | Brighton - Abbotsford and Green Island', // Header Example
maxLines: 2, // Cannot get this to work, always remains one line
maxFontSize: 20, // Does not work, always resizes to max font in order to fill whole FittedBox
style: TextStyle(
fontSize: 20, // Unsure if I need this, adding or removing seems to have to effect.
color: color.AppColor.textMain.withOpacity(0.8),
fontWeight: FontWeight.bold,
),
),
),
const SizedBox(width: 55), // Used to create padding either side of text
],
),
Thanks
cv template and I want to edit it with flutter
Everything in Flutter is widgets, this image would be an Image widget in your Flutter app.
You can use Stack widget to put things over each other. so You can put image over an image by using Stack widget.
Unfortunately you can't edit text of an image in Flutter, Instead I would rather to edit this image (for putting image and editing text) by Photoshop for example and then implementing it as one piece widget in my Flutter app.
What I assess from your question is you want to have a layout like the one given in your link, right? For a circular image, you could use CircleAvatar. As for the text you could use the Text widget. Now put these widgets inside a Column or Row. You seem to be new to Flutter and I'd suggest you to get a good grip on the basics first. Anyhow, here's a little dummy code snippet you could extend to achieve what you're looking for
Column(
crossAxisAlignment: CrossAxisAlignment
.start, //if you want your widgets to align on left in your col
children: [
CircleAvatar(
radius: 70,
foregroundImage: AssetImage("pathToYourAssetImg"),
),
SizedBox(
height: 20, //set this to your intended value
),
Text( //you could also create a custom text widget and pass the arguments if you don't want to hardcode text widgets over & over again for all of your text
"yourText",
style: TextStyle(
color: Colors.black87,
fontSize: 20, //set this to your value
fontWeight: FontWeight.bold //if you want to have a bold text
),
),
],
);
In my flutter code when I am creating an UI lot of places using Text widget. So I converted this Text widget into a function and calling everywhere? Text widget also including some styling. So calling the function or calling the Text widget is better (execution speed)?
Example code:
Text('Time left to Entrance exam',style: TextStyle(
fontSize: 16,
fontWeight: FontWeight.w400,
color: Colors.black
),);
or
Text buildText(String text,double fontSize, Color color) {
return Text(text,
style: TextStyle(
fontSize: fontSize,
color: color
),);
}
TextWidget function is more useful than multiple texts. It's absolutely a good practice and if any changes need you can able to change centrally and it's time-saving with clean code. You do not get the execution speed issue. And more important things, in both widget and function you just call a single Text widget. That's why there is no performance issue. You go for the second one for good practice.
Sometimes after turning on my app, user see not rendered screen.
Buttons are available, but no labels and icons are printed.
I didn't notice it with debug version, only release.
In some cases restarting app helps, and sometimes user has to install the app again.
What may be causing this issue?
Broken screen:
And this is how it should look like
Code seems to be rather standard, e.g. logo, 'Slift' string is created this way:
#override
Widget build(BuildContext context) {
return BorderedText(
strokeWidth: strokeWidth,
strokeColor: ThemeColors.getColor3(),
child: Text(
'SLift',
style: GoogleFonts.baloo(
textStyle:
TextStyle(decoration: TextDecoration.none, fontSize: fontSize),
),
));
}
are you using MediaQuery in your code? Because sometimes it works differently on release and debug mode.
I'm developing a game in Flutter with spritewidget library. I'd like to know if is it possible to use text inside a SpriteWidget.
I know i can use regular Flutter widgets but i need that the text size is relative to SpriteWidget so it can be consistently shown in different screen sizes.
I have searched library documentation but i haven't found anything related to text render.
Any suggestion would be appreciated!!
You can absolutely use text inside a SpriteWidget. There is the Label node for that particular purpose. If you need more advanced text rendering, you can use the code from the Label as your starting point.
Example:
Label label = Label(
'My text label',
textAlign: TextAlign.center,
textStyle: new TextStyle(
fontFamily: 'Orbitron',
letterSpacing: 10.0,
color: Colors.white,
fontSize: 24.0,
fontWeight: FontWeight.w600
)
);
addChild(label);