Flushbar

Use this package if you need more customization when notifying your user. For Android developers, it is made to substitute toasts and snackbars. IOS developers, I don’t know what you use there, but you will like it.

See the install instructions.

Quick reference

Since customization requires a lot of properties, here is a quick cheatsheet:

Quick tip

If you use a lot of those properties, it makes sense to make a factory to help with your Flushbar’s base appearance. Things like shadows, padding, margins, text styles usually don’t change within the app. Take a look at FlushbarHelper class and use it as an example.

Learn on YouTube !

While studying Flutter I stumbled on two amazing tutorials on how to use Flushbar. Make sure you show those guys some love.

1. A beginners tutorial by Matej Rešetár
2. A more advanced usage by Javier González Rodríguez

Getting Started

The examples bellow were updated for version 1.3.0. Changes might have been made. See the changelog if any of the examples do not reflect Flushbar’s current state.

The possibilities

A basic Flushbar

The most basic Flushbar uses only a message. Failing to provide it before you call show() will result in a runtime error. Duration, if not provided, will create an infinite Flushbar, only dismissible by code, back button clicks, or a drag (case isDismissible is set to true).

• Note that only message is a required parameter. All the other ones are optional

class YourAwesomeApp extends StatelessWidget {

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'YourAwesomeApp',
      home: Scaffold(
        Container(
          child: Center(
            child: MaterialButton(
              onPressed: (){
                Flushbar(
                  title:  "Hey Ninja",
                  message:  "Lorem Ipsum is simply dummy text of the printing and typesetting industry",
                  duration:  Duration(seconds: 3),              
                )..show(context);
              },
            ),
          ),
        ),
      ),
    );
  }
}

Lets get crazy Flushbar

Here is how customized things can get.

Flushbar(
      title: "Hey Ninja",
      message: "Lorem Ipsum is simply dummy text of the printing and typesetting industry",
      flushbarPosition: FlushbarPosition.TOP,
      flushbarStyle: FlushbarStyle.FLOATING,
      reverseAnimationCurve: Curves.decelerate,
      forwardAnimationCurve: Curves.elasticOut,
      backgroundColor: Colors.red,
      boxShadows: [BoxShadow(color: Colors.blue[800], offset: Offset(0.0, 2.0), blurRadius: 3.0)],
      backgroundGradient: LinearGradient(colors: [Colors.blueGrey, Colors.black]),
      isDismissible: false,
      duration: Duration(seconds: 4),
      icon: Icon(
        Icons.check,
        color: Colors.greenAccent,
      ),
      mainButton: FlatButton(
        onPressed: () {},
        child: Text(
          "CLAP",
          style: TextStyle(color: Colors.amber),
        ),
      ),
      showProgressIndicator: true,
      progressIndicatorBackgroundColor: Colors.blueGrey,
      titleText: Text(
        "Hello Hero",
        style: TextStyle(
            fontWeight: FontWeight.bold, fontSize: 20.0, color: Colors.yellow[600], fontFamily: "ShadowsIntoLightTwo"),
      ),
      messageText: Text(
        "You killed that giant monster in the city. Congratulations!",
        style: TextStyle(fontSize: 18.0, color: Colors.green, fontFamily: "ShadowsIntoLightTwo"),
      ),
    );

• Don’t forget to call show() or the bar will stay hidden.
• To deactivate any of those properties, pass null to it.

Styles

Flushbar can be either floating or grounded to the edge of the screen. I don’t recommend using margin or borderRadius if you chose FlushbarStyle.GROUNDED style.

Flushbar(flushbarStyle: FlushbarStyle.FLOATING)

or

Flushbar(flushbarStyle: FlushbarStyle.GROUNDED)

Floating Style	Grounded Style

Padding and Border Radius

You can give it some padding and a border radius. Works best with FlushbarStyle.FLOATING

Flushbar(
  margin: EdgeInsets.all(8),
  borderRadius: 8,
);
  

Left indicator bar

Flushbar has a lateral bar to better convey the humor of the notification. To use it, simple give leftBarIndicatorColor a color.

Flushbar(
  message: "Lorem Ipsum is simply dummy text of the printing and typesetting industry",
  icon: Icon(
    Icons.info_outline,
    size: 28.0,
    color: Colors.blue[300],
    ),
  duration: Duration(seconds: 3),
  leftBarIndicatorColor: Colors.blue[300],
)..show(context);

Customize your text

If you need a more fancy text, you can use Text or RichText and pass it to the titleText or messageText variables.

• Note that title will be ignored if titleText is not null
• Note that message will be ignored if messageText is not null

Flushbar(
  title: "Hey Ninja", //ignored since titleText != null
  message: "Lorem Ipsum is simply dummy text of the printing and typesetting industry", //ignored since messageText != null
  titleText: Text("Hello Hero", style: TextStyle(fontWeight: FontWeight.bold, fontSize: 20.0 color: Colors.yellow[600], fontFamily:"ShadowsIntoLightTwo"),),
  messageText: Text("You killed that giant monster in the city. Congratulations!", style: TextStyle(fontSize: 16.0, color: Colors.green[fontFamily: "ShadowsIntoLightTwo"),),
)..show(context);

Customize background and shadow

You can paint the background with any color you want. You can use any shadow you want. Just give it a backgroundColor and boxShadows.

Flushbar(
  title: "Hey Ninja",
  message: "Lorem Ipsum is simply dummy text of the printing and typesetting industry",
  backgroundColor: Colors.red,
  boxShadows: [BoxShadow(color: Colors.red[800], offset: Offset(0.0, 2.0), blurRadius: 3.0,)],
)..show(context);

Want a gradient in the background? No problem.

• Note that backgroundColor will be ignored while backgroundGradient is not null

Flushbar(
  title: "Hey Ninja",
  message: "Lorem Ipsum is simply dummy text of the printing and typesetting industry",
  backgroundGradient: LinearGradient(colors: [Colors.blue, Colors.teal]),
  backgroundColor: Colors.red,
  boxShadows: [BoxShadow(color: Colors.blue[800], offset: Offset(0.0, 2.0), blurRadius: 3.0,)],
)..show(context);

Icon and button action

Let us put a Icon that has a PulseAnimation. Icons have this animation by default and cannot be changed as of now. Also, let us put a button. Have you noticed that show() returns a Future? This Future will yield a value when you call dismiss([T result]). I recommend that you specify the result generic type if you intend to collect an user input.

Flushbar flush;
bool _wasButtonClicked;

@override
  Widget build(BuildContext context) {
    return Container(
      child: Center(
        child: MaterialButton(
          onPressed: () {
            flush = Flushbar<bool>(
              title: "Hey Ninja",
              message: "Lorem Ipsum is simply dummy text of the printing and typesetting industry",
              icon: Icon(
                       Icons.info_outline,
                       color: Colors.blue,),
              mainButton: FlatButton(
                             onPressed: () {
                                 flush.dismiss(true); // result = true
                               },
                             child: Text(
                               "ADD",
                               style: TextStyle(color: Colors.amber),
                             ),
                           ),) // <bool> is the type of the result passed to dismiss() and collected by show().then((result){})
              ..show(context).then((result) {
                setState(() { // setState() is optional here
                  _wasButtonClicked = result;
                });
              });
          },
        ),
      ),
    );
  }

Flushbar position

Flushbar can be at FlushbarPosition.BOTTOM or FlushbarPosition.TOP.

Flushbar(
  flushbarPosition: FlushbarPosition.TOP,
  title: "Hey Ninja",
  message: "Lorem Ipsum is simply dummy text of the printing and typesetting industry",)..show(context);

Duration and dismiss policy

By default, Flushbar is infinite. To set a duration, use the duration property. By default, Flushbar is dismissible by the user. A right or left drag will dismiss it. Set isDismissible to false to change this behaviour.

Flushbar(
  title: "Hey Ninja",
  message: "Lorem Ipsum is simply dummy text of the printing and typesetting industry",
  duration: Duration(seconds: 3),
  isDismissible: false,
)..show(context);

Progress Indicator

If you are loading something, use a LinearProgressIndicator If you want an undetermined progress indicator, do not set progressIndicatorController. If you want a determined progress indicator, you now have full control over the progress since you own the AnimationController

• There is no need to add a listener to your controller just to call setState(){}. Once you pass in your controller, Flushbar will do this automatically. Just make sure you call _controller.forward()

AnimationController _controller = AnimationController(
      vsync: this,
      duration: Duration(seconds: 3),
    );

Flushbar(
  title: "Hey Ninja",
  message: "Lorem Ipsum is simply dummy text of the printing and typesetting industry",
  showProgressIndicator: true,
  progressIndicatorController: _controller,
  progressIndicatorBackgroundColor: Colors.grey[800],
)..show(context);

Show and dismiss animation curves

You can set custom animation curves using forwardAnimationCurve and reverseAnimationCurve.

Flushbar(
  forwardAnimationCurve: Curves.decelerate,
  reverseAnimationCurve: Curves.easeOut,
  title: "Hey Ninja",
  message: "Lorem Ipsum is simply dummy text of the printing and typesetting industry",
)..show(context);

Listen to status updates

You can listen to status update using the onStatusChanged property.

• Note that when you pass a new listener using onStatusChanged, it will activate once immediately so you can check in what state the Flushbar is.

Flushbar flushbar = Flushbar(title: "Hey Ninja", message: "Lorem Ipsum is simply dummy text of the printing and typesetting industry");

  flushbar
    ..onStatusChanged = (FlushbarStatus status) {
      switch (status) {
        case FlushbarStatus.SHOWING:
          {
            doSomething();
            break;
          }
        case FlushbarStatus.IS_APPEARING:
          {
            doSomethingElse();
            break;
          }
        case FlushbarStatus.IS_HIDING:
          {
            doSomethingElse();
            break;
          }
        case FlushbarStatus.DISMISSED:
          {
            doSomethingElse();
            break;
          }
      }
    }
    ..show(context);

Input text

Sometimes we just want a simple user input. Use the propertyuserInputForm.

• Note that buttons, messages, and icons will be ignored if userInputForm != null
• dismiss(result) will yield result. dismiss() will yield null.

Flushbar<List<String>> flush;
final GlobalKey<FormState> _formKey = GlobalKey<FormState>();

TextFormField getFormField(String text) {
    return TextFormField(
      initialValue: text,
      style: TextStyle(color: Colors.white),
      maxLength: 100,
      maxLines: 1,
      maxLengthEnforced: true,
      decoration: InputDecoration(
          fillColor: Colors.white10,
          filled: true,
          icon: Icon(
            Icons.label,
            color: Colors.grey[500],
          ),
          border: UnderlineInputBorder(),
          helperText: "Helper Text",
          helperStyle: TextStyle(color: Colors.grey),
          labelText: "Label Text",
          labelStyle: TextStyle(color: Colors.grey)),
    );
  }

flush = Flushbar<List<String>>(
  userInputForm = Form(
          key: _formKey,
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              getTextFormField("Initial Value"),
              getTextFormField("Initial Value Two"),
            ]
            Align(
              alignment: Alignment.bottomRight,
              child: Padding(
                padding: const EdgeInsets.only(top: 8.0),
                child: MaterialButton(
                  textColor: Colors.amberAccent,
                  child: Text("SUBMIT"),
                  onPressed: () {
                    flush.dismiss([_controller1.value.text, _controller2.value.text]);
                  },
                ),
              ),
            )
          ],),),
)..show(context).then((result) {
        if (result != null) {
          String userInput1 = result[0];
          String userInput2 = result[1];
        }
      });

This example tries to mimic the Material Design style guide

Flushbar Helper

I made a helper class to facilitate the creation of the most common Flushbars.

FlushbarHelper.createSuccess({message, title, duration});
FlushbarHelper.createInformation({message, title, duration});
FlushbarHelper.createError({message, title, duration});
FlushbarHelper.createAction({message, title, duration flatButton});
FlushbarHelper.createLoading({message,linearProgressIndicator, title, duration, progressIndicatorController, progressIndicatorBackgroundColor});
FlushbarHelper.createInputFlushbar({textForm});

GitHub

Source Code: A Tidy Flutter Package to add more customization to notify your User.