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Pooja Bhaumik 3ade4642f3 Remove colors property from FlutterLogo
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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

EDIT : No need of running the project, simply run the code in the new official Flutter online compiler DartPad. All the DartPad links are given along with the example.

Still want to run the 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.

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Examples

Text

Try out Text widget and it's properties directly from DartPad

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

Try AppBar examples directly from DartPad

AppBar with Title 
      AppBar(
        backgroundColor: Colors.red,
        title: Text("Title",),
        elevation: 4.0,
      ),
AppBar with List of Actions 
       AppBar(
        title: Text("Title"),
        actions: [
          IconButton(
            icon: Icon(Icons.search),
            onPressed: () {},
          ),
          IconButton(
            icon: Icon(Icons.add),
            onPressed: () {},
          ),
        ],
      ),
AppBar with Text and Icon Themes 
     AppBar(
        backgroundColor: Colors.blueAccent,
        title: Text("Title"),
        actions: [
          IconButton(
            icon: 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: [
              Text(
                "Title",
                style: TextStyle(fontSize: 18.0),
              ),
              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: [
            FlutterLogo(),
            Padding(
              padding: const EdgeInsets.only(left: 16.0),
              child: Text(
                "Title with image",
              ),
            ),
          ],
        ),
      ),
Transparent AppBar 
     AppBar(
        backgroundColor: Colors.transparent,
        title: Text("Transparent AppBar"),
        actions: [
          IconButton(
            icon: Icon(
              Icons.search,
            ),
            onPressed: () {},
          )
        ],
      ),

Container

Try Container examples directly from DartPad

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: ShapeDecoration(
          color: Colors.white,
          shadows: [
            BoxShadow(color: Colors.black, blurRadius: 15.0)
          ],
          shape: 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: BoxDecoration(
          color: Colors.yellow,
          borderRadius: BorderRadius.circular(55.0),
          border: Border.all(
            width: 5.0,
            color: Colors.red,
          ),
        ),
        child: Center(child: const Text('Hello Flutter', textAlign: TextAlign.center)),
      ),
Container with alignment property 
    Container(
        margin: EdgeInsets.all(20.0),
        width: double.infinity,
        height: 300.0,
        color: Colors.red,
        alignment: Alignment.topRight,
        padding: EdgeInsets.all(20.0),
        child: FlutterLogo(size: 100.0,),
      ),
Container with minWidth and maxWidth Box Constraints 
   Container(
          margin: EdgeInsets.all(20.0),
          constraints: BoxConstraints(
            maxWidth: 400.0,
            minWidth: 200.0
          ),
          width: 50.0,
          alignment: Alignment.topCenter,
          child: Image.network('https://picsum.photos/500/400'),
        ),
Container with List of Box Shadow 
  Container(
          height: 100.0,
          width: 200.0,
          decoration: BoxDecoration(
              color: Colors.white,
              boxShadow: [
              BoxShadow(color: Colors.red, blurRadius: 12.0 ),
              BoxShadow(color: Colors.green, blurRadius: 40.0)
              ]
          ),
        )
Container with Image and Rounded Border 
  Container(
          height: 200.0,
          width: 200.0,
          decoration: BoxDecoration(
            borderRadius: BorderRadius.circular(20.0),
              color: Colors.white,
              image: DecorationImage(fit: BoxFit.cover,
                  image: NetworkImage('https://picsum.photos/200/300'))
          ),
        )
Circular Container 
   Container(
          height: 200.0,
          width: 200.0,
          alignment: Alignment.center,
          decoration: BoxDecoration(
            borderRadius: BorderRadius.circular(200.0),
              color: Colors.green,
          ),
          child: Text('Hello'),
        )
Container with Horizontal Radius of left and right Radius 
  Container(
          height: 200.0,
          width: 200.0,
          alignment: Alignment.center,
          decoration: BoxDecoration(
            borderRadius: BorderRadius.horizontal(
              left: Radius.circular(20.0),
              right: Radius.circular(80.0)
            ),
              color: Colors.green,
          ),
          child: Text('Hello'),
        )
Container with Vertical Radius of top and bottom Radius 
 Container(
          height: 200.0,
          width: 200.0,
          alignment: Alignment.center,
          decoration: BoxDecoration(
            borderRadius: BorderRadius.vertical(
              top: Radius.circular(20.0),
              bottom: Radius.circular(80.0)
            ),
              color: Colors.green,
          ),
          child: Text('Hello'),
        )

Column

Try Column examples directly from DartPad

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

Try Row examples directly from DartPad

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,
              ),
              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,
              ),
              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

Try Buttons examples directly from DartPad

     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: (){})
      ),
      
    Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            FloatingActionButton(
                backgroundColor: Colors.orange,
                child: Icon(Icons.mic, size: 30.0, color: Colors.white,),
                onPressed: (){}),
            FloatingActionButton(
                mini: true,
                backgroundColor: Colors.green,
                child: Icon(Icons.mic, size: 30.0, color: Colors.white,),
                onPressed: (){}),
          ],
        )
      ),

Stack

Try Stack examples directly from DartPad

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,
                ),
              ),
            ],
          ),
        ),
      ),

TextFields

Try TextFields examples directly from DartPad

Rounded TextField without Outline 
     TextField(
    decoration: new InputDecoration(
        border: new OutlineInputBorder(
          borderSide: BorderSide(
            width: 0,
            style: BorderStyle.none,
          ),
          borderRadius: const BorderRadius.all(
            const Radius.circular(10.0),
          ),
        ),
        filled: true,
        hintStyle: new TextStyle(color: Colors.grey[800]),
        hintText: "Type in your text",
        fillColor: Colors.white),
  );
Rounded TextField With Outline 
     TextField(
    decoration: new InputDecoration(
        border: new OutlineInputBorder(
          borderRadius: const BorderRadius.all(
            const Radius.circular(10.0),
          ),
        ),
        filled: true,
        hintStyle: new TextStyle(color: Colors.grey[800]),
        hintText: "Type in your text",
        fillColor: Colors.white),
  );

Contributors

Pooja Bhaumik

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Getting Started

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