Ir al contenido principal

Flutter



Run (launch.json)
"program": "lib/main8_ui_row_col.dart",

Padding
padding: EdgeInsets.only(top: 30.0, left: 20.0),

Columns
Column(
children: <Widget>[])

Rows
Row(
children: <Widget>[])

Align elements
Expanded()



Font
https://fonts.google.com
fontFamily: 'Fredericka',
fontWeight: FontWeight.w700,

pubspec.yaml
fonts:
- family: Fredericka
fonts:
- asset: fonts/FrederickatheGreat-Regular.ttf
weight: 700



Image (not support SVG)

http://clipart-library.com


pubspec.yaml
assets:
- images/5TRrG7gLc.png

class BowlImage extends StatelessWidget {
@override
Widget build(BuildContext context) {
AssetImage myImage = AssetImage('images/5TRrG7gLc.png');
Image image = Image(image: myImage, width: 400.0, height: 400.0,);
return Container(child: image,);
}
}


Button
class Orderbutton extends StatelessWidget {
@override
Widget build(BuildContext context) {
var button = Container(
margin: EdgeInsets.only(top: 50.0),
child: RaisedButton(
child: Text("Register your bowl"),
color: Colors.lightBlue,
elevation: 5.0,
onPressed: () {
registerBowl(context);
},
));
return button;
}

Alert
void registerBowl(BuildContext context) {
var alert = AlertDialog(
title: Text("Register"),
content: Text("Thanks for your register"),
);
showDialog(
context: context,
builder: (BuildContext context){
return alert;
}
);
}





































Comentarios

Entradas populares de este blog

C# Using tabs

To use tabs in C# use the TabContainer element from AjaxControlToolkit Include AjaxControlToolkit  Include in the Web.config file, inside the tag <system.web> the following code  <pages>       <controls>         <add tagPrefix="ajaxCTK" namespace="AjaxControlToolkit" assembly="AjaxControlToolkit"/>       </controls>     </pages>   Include TabContainer element First  include TabContainer element that is the section where all the tabs will be displayed. <ajaxCTK:TabContainer ID="TabContainerUpdate" runat="server"                 Height="800"                 CssClass="ajax__tab_style"> </ajaxCTK:TabContainer> Second per each tab include the following code corresponding to each ...

Rails - Basic Steps III

pValidations Validations are a type of ActiveRecord Validations are defined in our models Implement Validations Go to   root_app/app/models Open files  *.rb for each model Mandatory field validates_presence_of   :field Ex:   validates_presence_of    :title Classes The basic syntax is class MyClass        @global_variable                def my_method              @method_variable        end end Create an instance myInstance = MyClass.new Invoke a mehod mc.my_method class() method returns the type of the object In Ruby, last character of method define the behavior If ends with a question -> return a boolean value If ends with an exclamation -> change the state of the object Getter / Setter method def global_variable       return @global_variable end ...

Python create package

Create a root folder Create a sub-folder "example_pkg" that contains the funtionallity packaging_tutorial/ example_pkg/ __init__.py In the root folder create the following structure  packaging_tutorial/ example_pkg/ __init__.py tests/ setup.py LICENSE README.md in the setup.py contains the configuration of the packages your package is found by find_packages() import setuptools with open ( "README.md" , "r" ) as fh : long_description = fh . read () setuptools . setup ( name = "example-pkg-YOUR-USERNAME-HERE" , # Replace with your own username version = "0.0.1" , author = "Example Author" , author_email = "author@example.com" , description = "A small example package" , long_description = long_description , long_description_content_type = "text/markdown" , url = "https://github.com/pypa/sam...