How can i change my Texts color immedietly
TextStyle get headingStyle {
return GoogleFonts.lato(
textStyle: TextStyle(fontSize: 30, fontWeight: FontWeight.bold),
color:Get.isDarkMode?Colors.white:Colors.black);
}
color changes when i hot reloud but doesn't change when i clicked the button(button changes isDarkMode )
Try put the Obx.
It's create an observable in your code
TextStyle get headingStyle {
return Obx(() => GoogleFonts.lato(
textStyle: TextStyle(fontSize: 30, fontWeight: FontWeight.bold),
color:Get.isDarkMode?Colors.white:Colors.black));
}
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class CATextStyle extends TextStyle {
static const style = TextStyle();
//const CATextStyle._(TextStyle style) : super(style);
CATextStyle._style(TextStyle style) : super(style);
}
abstract class CATextStyles {
static const _parent = TextStyle();
static final headLine1 =
CATextStyle._style(_parent.copyWith(color: Colors.amber));
}
I want to created class like this but is showing error
i want to know how to use only one textstyle class and reuse that using copywith method
Here is how I do this, Create a separate Directory and name it Constants and inside this create a dart file with the name appstyles.dart. In this class declare all your styles just like the below code.
class AppStyles{
static TextStyle headline1 = TextStyle(
fontFamily: 'Roboto',
fontWeight: FontWeight.w300,
fontSize: 40,
);
static const TextStyle headline2 = TextStyle(
fontWeight: FontWeight.w400,
fontSize: 30,
);
static const TextStyle bodyText1 = TextStyle(
fontWeight: FontWeight.w300,
color: Colors.black,
fontSize: 16,
);
static const TextStyle bodyText2 = TextStyle(
color: Colors.black,
fontWeight: FontWeight.w300,
fontSize: 14,
);
}
The same is you use for Container decoration etc e.g
static final kRoundedTContainer = BoxDecoration(
color: Colors.red,
borderRadius: BorderRadius.all(
Radius.circular(10),
));
And here is how to use these styles
Text(
'Hello World',
style: AppStyles.headline1,
)
Container(
decoration: AppStyles.kRoundedTContainer,
height: 200,
width: 200,
)
You can create TextStyle global class like this.
class CommonFontStyle {
static font12WithRegular({color}) {
return TextStyle(
fontSize: Dimensions.fontSize12,
fontFamily: 'Montserrat Regular',
fontWeight: FontWeight.w500,
color: color);
}
static font12WithMedium({weight}) {
return TextStyle(
fontSize: Dimensions.fontSize12,
fontFamily: 'Montserrat Medium',
fontWeight: weight,
);
}
}
and for use of this you have to add simply this font12WithRegular() to your textStyles.
child: Text(
"Okay",
style: CommonFontStyle.font12WithRegular(),
textAlign: TextAlign.center,
),
I am new to flutter, and I want to reduce code duplication when it comes to UI.
Let's say that I chose some theme. ElevatedButton will have color of that theme.
Now, I want to have some buttons that will by styled alternatively (e.g. 'Cancel' buttons to be grey or 'Accept' buttons to be bright green).
Normally I do like this:
ElevatedButton(
style: ElevatedButton.styleFrom(primary: Colors.grey[100]),
onPressed: () {
// onPressed logic here
},
child: const Text(
'Cancel',
style: TextStyle(color: Colors.black54),
),
),
but if I have multiple Cancel buttons, this code would be repeated:
style: ElevatedButton.styleFrom(primary: Colors.grey[100]), and
style: TextStyle(color: Colors.black54),
What is "Flutter" way to achieve it so I can have "Cancel" or "Accepted" style defined in one place? Should I create my own widget CancelButton? or is there better way?
ElevatedButton(
style: Styles.cancelButtonStyle(),
onPressed: () {
// onPressed logic here
},
child: const Text(
'Cancel',
style: Styles.cancelButtonTextStyle(),
),
),
Your Custom Style Class
class Styles{
static TextStyle cancelButtonTextStyle(){
return TextStyle(
fontSize: 16,
color: Colors.black54
);
}
static TextStyle acceptButtonTextStyle(){
return TextStyle(
fontSize: 16,
color: Colors.black54
);
}
static ButtonStyle cancelButtonStyle(){
return ElevatedButton.styleFrom(primary: Colors.grey[100]);
}
static ButtonStyle acceptButtonStyle(){
return ElevatedButton.styleFrom(primary: Colors.green[700]);
}
}
In my home page in build widget before return statement I use below code.
If I create an another widget in my home page I have to copy below code before each return statement. If you create another stateless/stateful dart file I need to copy below code again.
My question is How to create a global TextStyle in Flutter? I don't want to change Theme data, all want to use my TextStyle across the my flutter project. Thanks.
TextStyle myNormalStyle = TextStyle(
fontSize: SizerUtil.deviceType == DeviceType.Mobile ? 14.0.sp : 13.0.sp,
fontStyle: FontStyle.normal,
fontWeight: FontWeight.normal,
color: Colors.black);
You can easily you that using by using Theme. As described on the flutter docs you can use it like :
MaterialApp(
title: title,
theme: ThemeData(
// Define the default brightness and colors.
brightness: Brightness.dark,
primaryColor: Colors.lightBlue[800],
accentColor: Colors.cyan[600],
// Define the default font family.
fontFamily: 'Georgia',
// Define the default TextTheme. Use this to specify the default
// text styling for headlines, titles, bodies of text, and more.
textTheme: TextTheme(
headline1: TextStyle(fontSize: 72.0, fontWeight: FontWeight.bold),
headline6: TextStyle(fontSize: 36.0, fontStyle: FontStyle.italic),
bodyText2: TextStyle(fontSize: 14.0, fontFamily: 'Hind'),
),
)
);
or you can also use DefaultTextStyle widget to provide a default TextStyle to all the children of this widget. Read more about DefaultTextStyle.
1º create a class file:
import 'package:flutter/material.dart';
class MyTextStyle {
static const TextStyle textStyle = TextStyle(
color: Color.fromARGB(255, 247, 240, 201),
fontSize: 20,
fontWeight: FontWeight.bold,
);
}
2º import and use in your screen:
import 'package:MyApp/MyTextStyle.dart';
const Text(
'You have pushed the button this many times:',
style: MyTextStyle.textStyle,
),
I want to update the displaying font in flutter using a function.I've tried with following method but it won't update.I can't find the problem.
Function
_fontselect(String ){
if (_character==1) {
return "Font";
} else{
return "Font2";
}
}
context
Center(child: Text(text,
textAlign: TextAlign.center,
style: TextStyle(
fontFamily:_fontselect(String),
fontWeight: FontWeight.bold,
fontSize: 28.0,
color: Colors.red)
),
),
Use Ternary Operator within the fontFamily itself.
Center(child: Text(text,
textAlign: TextAlign.center,
style: TextStyle(
fontFamily: _character==1 ? "Font" : "Font2",
fontWeight: FontWeight.bold,
fontSize: 28.0,
color: Colors.red)
),
),
Your function needs a String variable to use inside of the function.
_fontselect(String character){
if (character==1) {
return "Font";
} else{
return "Font2";
}
}
Also it looks like character is an int but you are sending a String over to the function you should call the function with an int if this makes more sense.
How to make my own text theme style?
I only find the default text theme like this but it's not enough.
textTheme: TextTheme(
body1: TextStyle(),
body2: TextStyle(),
button: TextStyle(),
caption: TextStyle(),
display1: TextStyle(),
display2: TextStyle(),
display3: TextStyle(),
display4: TextStyle(),
headline: TextStyle(),
overline: TextStyle(),
subhead: TextStyle(),
subtitle: TextStyle(),
title: TextStyle(),
),
I want for example have a text with line through then some other have underline etc
I was thinking to override the body2 for underline style then how to define another style for line through?
Kind Regards
You can create a class to hold your style and then call it from anywhere in your app.
class CustomTextStyle {
static TextStyle display5(BuildContext context) {
return Theme.of(context).textTheme.display4.copyWith(fontSize: 192.0);
}
}
And the use it as
Text(
'Wow',
style: CustomTextStyle.display5(context),
),
Look at question Flutter: Define custom TextStyles for use throughout the app that contains the complete answer referred here.
Here is an alternative using the extension method with the lineThrough:
extension CustomStyles on TextTheme {
TextStyle get error => const TextStyle(decoration: TextDecoration.lineThrough, fontSize: 20.0, color: Colors.blue, fontWeight: FontWeight.bold);
And then you can use it like this:
Text("your text", style: Theme.of(context).textTheme.error)
Since the release of dart 2.7, you can also use an extension method:
extension CustomStyles on TextTheme {
TextStyle get error {
return TextStyle(
fontSize: 18.0,
color: Colors.red,
fontWeight: FontWeight.bold,
);
}
}
Then you can use it like this:
Text(error, style: Theme.of(context).textTheme.error)
You can set the TextStyle() options for further customization. For the specs you need set the decoration option. For underlining:
TextStyle(decoration: TextDecoration.underline)
and for line through:
TextStyle(decoration: TextDecoration.lineThrough)