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Intended for Complete Beginners at Flutter : Play with 20+ examples given and get familiar with various basic widgets in Flutter

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flutterbasicwidgets's Introduction

Basic Widgets Examples

This is aimed for complete beginners in Flutter, to get them acquainted with the various basic widgets in Flutter.

Run this project

  • Fork this project.
  • Rename the directory to "flutter_widgets" or something with all_lowercase_and_underscore. (Unfortunately Flutter doesnt like CamelCases)
  • In your terminal, run flutter create . This will create the android and iOS projects for you.
  • Run in your emulator or simulator.

OR you can always copy the examples from here and try it out in your apps.

Examples

Text

Play with Text properties and styles 
 
  Text(
          "Hello Flutter It is Awesome WOW",
          textAlign: TextAlign.right,
          textDirection: TextDirection.ltr,
          overflow: TextOverflow.ellipsis,
          maxLines: 2,
          style: TextStyle(
              color: Colors.black,
              fontSize: 50.0,
              fontWeight: FontWeight.w200,
              letterSpacing: 2.0,
              wordSpacing: 40.0,
              decoration: TextDecoration.overline,
              decorationStyle: TextDecorationStyle.wavy),
        ),

AppBar

AppBar with Title 
      AppBar(
        backgroundColor: Colors.red,
        title: new Text("Title",),
        elevation: 4.0,
      ),
AppBar with List of Actions 
       AppBar(
        title: new Text("Title"),
        actions: [
          new IconButton(
            icon: new Icon(Icons.search),
            onPressed: () {},
          ),
          new IconButton(
            icon: new Icon(Icons.add),
            onPressed: () {},
          ),
        ],
      ),
AppBar with Text and Icon Themes 
     AppBar(
        backgroundColor: Colors.blueAccent,
        title: new Text("Title"),
        actions: [
          new IconButton(
            icon: new Icon(Icons.search),
            onPressed: () {},
          ),
        ],
        iconTheme: IconThemeData(
          color: Colors.white,
        ),
        textTheme: TextTheme(
          title: TextStyle(
            color: Colors.white,
            fontSize: 20.0
          ),
        ),
      ),
AppBar with centered Title and Subtitle 
    AppBar(
        automaticallyImplyLeading: false,
        title: Center(
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.center,
            mainAxisSize: MainAxisSize.max,
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              new Text(
                "Title",
                style: TextStyle(fontSize: 18.0),
              ),
              new Text(
                "subtitle",
                style: TextStyle(fontSize: 14.0),
              ),
            ],
          ),
        ),
      ),
AppBar with Logo 
     AppBar(
        automaticallyImplyLeading: false,
        backgroundColor: Colors.yellow,
        title: Row(
          mainAxisAlignment: MainAxisAlignment.start,
          mainAxisSize: MainAxisSize.max,
          children: [
            new FlutterLogo(),
            Padding(
              padding: const EdgeInsets.only(left: 16.0),
              child: new Text(
                "Title with image",
              ),
            ),
          ],
        ),
      ),
Transparent AppBar 
     AppBar(
        backgroundColor: Colors.transparent,
        title: Text("Transparent AppBar"),
        actions: [
          IconButton(
            icon: Icon(
              Icons.search,
            ),
            onPressed: () {},
          )
        ],
      ),

Container

Container with full-device sized Flutter Logo 
     Container(
        height: MediaQuery.of(context).size.height,
        width: MediaQuery.of(context).size.width,
        margin: EdgeInsets.all(25.0),
        decoration: FlutterLogoDecoration(),
      ),
Container with shadow, border, and child 
      Container(
        height: MediaQuery.of(context).size.height,
        width: MediaQuery.of(context).size.width,
        margin: EdgeInsets.all(25.0),
        decoration: new ShapeDecoration(
          color: Colors.white,
          shadows: [
            BoxShadow(color: Colors.black, blurRadius: 15.0)
          ],
          shape: new Border.all(
            color: Colors.red,
            width: 8.0,
          ),
        ),
        child: Center(child: const Text('Hello Flutter', textAlign: TextAlign.center)),
      ),
Rounded rectangle containers with border 
     Container(
        height: MediaQuery.of(context).size.height,
        width: MediaQuery.of(context).size.width,
        margin: EdgeInsets.all(25.0),
        decoration: new BoxDecoration(
          color: Colors.yellow,
          borderRadius: new BorderRadius.circular(55.0),
          border: new Border.all(
            width: 5.0,
            color: Colors.red,
          ),
        ),
        child: Center(child: const Text('Hello Flutter', textAlign: TextAlign.center)),
      ),

Column

Simple Column of similar Text children 
      Column(
          children: [
            Text("Column 1", style: bigStyle,),
            Text("Column 2", style: bigStyle,),
            Text("Column 3", style: bigStyle,)
          ],
        )
Column of different Widget children 
      Column(
          children: [
            FlutterLogo(
              size: 100.0,
              colors: Colors.red,
            ),
            Text("Column 2", style: bigStyle,),
            Container(
              color: Colors.green,
              height: 100.0,
              width: 100.0,
            )
          ],
        )
Playing with MainAxisAlignment 
      Column(
            mainAxisSize: MainAxisSize.max,
            mainAxisAlignment: MainAxisAlignment.spaceAround,
            crossAxisAlignment: CrossAxisAlignment.end,
            children: [
              FlutterLogo(
                size: 100.0,
                colors: Colors.red,
              ),
              Text("Child Two", style: bigStyle,),
              Container(
                color: Colors.blue,
                height: 100.0,
                width: 100.0,
              )
            ],
          ),
Column having Row as child 
      Column(
            mainAxisSize: MainAxisSize.max,
            crossAxisAlignment: CrossAxisAlignment.center,
            mainAxisAlignment: MainAxisAlignment.spaceAround,
            children: [
              Text("Parent Text 1"),
              Text("Parent Text 2"),
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceAround,
                children: [
                  Text("Child Row Text 1"),
                  Text("Child Row Text 2")
                ],
              ),
            ],
          ),

Row

Simple Row of similar Text children 
      Row(
            mainAxisSize: MainAxisSize.min,
            children: [
              Text("Column 1", style: bigStyle,),
              Text("Column 2", style: bigStyle,),
              Text("Column 3", style: bigStyle,)
            ],
          )
Row with children of different Widgets
      Row(
            mainAxisSize: MainAxisSize.min,
            children: [
              FlutterLogo(
                size: 100.0,
                colors: Colors.red,
              ),
              Text("Column 2", style: bigStyle,),
              Container(
                color: Colors.green,
                height: 100.0,
                width: 100.0,
              )
            ],
          )
Playing with MainAxisAlignment 
      Row(
            mainAxisSize: MainAxisSize.max,
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            crossAxisAlignment: CrossAxisAlignment.center,
            children: [
              FlutterLogo(
                size: 100.0,
                colors: Colors.red,
              ),
              Text("Child Two", style: bigStyle,),
              Container(
                color: Colors.blue,
                height: 100.0,
                width: 100.0,
              )
            ],
          ),
Row having Column as child 
      Row(
            mainAxisSize: MainAxisSize.min,
            crossAxisAlignment: CrossAxisAlignment.center,
            mainAxisAlignment: MainAxisAlignment.spaceAround,
            children: [
              Text("Parent Text 1"),
              Text("Parent Text 2"),
              Column(
                mainAxisSize: MainAxisSize.min,
                mainAxisAlignment: MainAxisAlignment.spaceAround,
                children: [
                  Text("Child Row Text 1"),
                  Text("Child Row Text 2")
                ],
              ),
            ],
          ),

Buttons

     RaisedButton(
          onPressed: (){},
          color: Colors.yellow,
          disabledTextColor: Colors.grey,
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(20.0)
          ),
          elevation: 20.0,
          splashColor: Colors.green,
          highlightColor: Colors.red,
          highlightElevation: 1.0,
          child: Text("Raised Button"),
        ),
      
     MaterialButton(
          minWidth: 250.0,
          onPressed: (){},
          colorBrightness: Brightness.dark,
          color: Colors.deepPurpleAccent,
          elevation: 20.0,
          splashColor: Colors.green,
          //highlightColor: Colors.red,
          highlightElevation: 1.0,
          child: Text("Material Button"),
        ),
      
      FlatButton(
          onPressed: (){},
          colorBrightness: Brightness.dark,
          color: Colors.deepPurpleAccent,
          splashColor: Colors.green,
          highlightColor: Colors.red,
          child: Text("Raised Button"),
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.horizontal(
            left: Radius.circular(20.0), right: Radius.circular(1.0))
          ),
        ),
      
     OutlineButton(
          onPressed: (){},
          borderSide: BorderSide(
            width: 5.0,
            color: Colors.deepPurpleAccent
          ),
          color: Colors.deepPurpleAccent,
          highlightedBorderColor: Colors.purple,
          splashColor: Colors.green,
          //highlightColor: Colors.red,
          child: Text("Raised Button"),
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.vertical(
            top: Radius.circular(20.0), bottom: Radius.circular(1.0))
          ),
        ),
      
     IconButton(
            color: Colors.purple,
            splashColor: Colors.yellow,
           // highlightColor: Colors.red,
            icon: Icon(Icons.build, size: 40.0,),
            onPressed: (){})
      ),

Stack

Stack of overlapping containers of reducing size 
 
  Stack(
        children: [
          Container(
            height: 300.0,
            width: 300.0,
            color: Colors.red,
          ),
          Container(
            height: 250.0,
            width: 250.0,
            color: Colors.green,
          ),
          Container(
            height: 200.0,
            width: 200.0,
            color: Colors.yellow,
          )
        ],
      ),
Playing with Alignment property 
 
  Stack(
        alignment: Alignment.center,
        children: [
          Container(
            height: 300.0,
            width: 300.0,
            color: Colors.red,
          ),
          Container(
            height: 250.0,
            width: 250.0,
            color: Colors.green,
          ),
          Container(
            height: 200.0,
            width: 200.0,
            color: Colors.yellow,
          )
        ],
      ),
One child on top of another using Positioned 
 
  Container(
        height: 400.0,
        //color: Colors.yellow,
        child: Padding(
          padding: const EdgeInsets.all(8.0),
          child: Stack(
            alignment: Alignment.center,
            children: [
              Container(
                height: 300.0,
                width: 300.0,
                color: Colors.red,
              ),
              Positioned(
                top: 0.0,
                child: Container(
                  height: 250.0,
                  width: 250.0,
                  color: Colors.green,
                ),
              ),
            ],
          ),
        ),
      ),
Playing with Positioned properties 
 
  Container(
        height: 400.0,
        //color: Colors.yellow,
        child: Padding(
          padding: const EdgeInsets.all(8.0),
          child: Stack(
            alignment: Alignment.center,
            children: [
              Container(
                height: 300.0,
                width: 300.0,
                color: Colors.red,
              ),
              Positioned(
                top: 0.0,
                bottom: 0.0,
                child: Container(
                  height: 250.0,
                  width: 250.0,
                  color: Colors.green,
                ),
              ),
            ],
          ),
        ),
      ),
Playing with Positioned 
 
  Container(
        height: 400.0,
        width: 350.0,
        //color: Colors.yellow,
        child: Padding(
          padding: const EdgeInsets.all(8.0),
          child: Stack(
            alignment: Alignment.center,
            children: [
              Container(
                height: 300.0,
                width: 200.0,
                color: Colors.red,
              ),
              Positioned(
                right: 0.0,
                child: Container(
                  height: 250.0,
                  width: 150.0,
                  color: Colors.green,
                ),
              ),
            ],
          ),
        ),
      ),

Contributors

Pooja Bhaumik

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Getting Started

For help getting started with Flutter, view our online documentation.

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