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:

Property What does it do title The title displayed to the user message The message displayed to the user. titleText Replaces [title]. Although this accepts a [widget], it is meant to receive [Text] or [RichText] messageText Replaces [message]. Although this accepts a [widget], it is meant to receive [Text] or [RichText] icon You can use any widget here, but I recommend [Icon] or [Image] as indication of what kind of message you are displaying. Other widgets may break the layout shouldIconPulse An option to animate the icon (if present). Defaults to true. maxWidth Used to limit Flushbar width (usually on large screens) margin Adds a custom margin to Flushbar padding Adds a custom padding to Flushbar. The default follows material design guide line borderRadius Adds a radius to all corners of Flushbar. Best combined with [margin]. I do not recommend using it with [showProgressIndicator] or [leftBarIndicatorColor] borderColor Adds a border to every side of Flushbar. I do not recommend using it with [showProgressIndicator] or [leftBarIndicatorColor] borderWidth Changes the width of the border if [borderColor] is specified backgroundColor Flushbar background color. Will be ignored if [backgroundGradient] is not null. leftBarIndicatorColor If not null, shows a left vertical bar to better indicate the humor of the notification. It is not possible to use it with a [Form] and I do not recommend using it with [LinearProgressIndicator]. boxShadows The shadows generated by Flushbar. Leave it null if you don't want a shadow. You can use more than one if you feel the need. Check this example backgroundGradient Flushbar background gradient. Makes [backgroundColor] be ignored. mainButton Use if you need an action from the user. [FlatButton] is recommended here. onTap A callback that registers the user's click anywhere. An alternative to [mainButton] duration How long until Flushbar will hide itself (be dismissed). To make it indefinite, leave it null. isDismissible Determines if the user can swipe or click the overlay (if [routeBlur] > 0) to dismiss. It is recommended that you set [duration] != null if this is false. If the user swipes to dismiss or clicks the overlay, no value will be returned. dismissDirection FlushbarDismissDirection.VERTICAL by default. Can also be [FlushbarDismissDirection.HORIZONTAL] in which case both left and right dismiss are allowed. flushbarPosition Flushbar can be based on [FlushbarPosition.TOP] or on [FlushbarPosition.BOTTOM] of your screen. [FlushbarPosition.BOTTOM] is the default. flushbarStyle Flushbar can be floating or be grounded to the edge of the screen. If grounded, I do not recommend using [margin] or [borderRadius]. [FlushbarStyle.FLOATING] is the default forwardAnimationCurve The [Curve] animation used when show() is called. [Curves.easeOut] is default. reverseAnimationCurve The [Curve] animation used when dismiss() is called. [Curves.fastOutSlowIn] is default. animationDuration Use it to speed up or slow down the animation duration showProgressIndicator true if you want to show a [LinearProgressIndicator]. If [progressIndicatorController] is null, an infinite progress indicator will be shown progressIndicatorController An optional [AnimationController] when you want to control the progress of your [LinearProgressIndicator]. You are responsible for controlling the progress progressIndicatorBackgroundColor a [LinearProgressIndicator] configuration parameter. progressIndicatorValueColor a [LinearProgressIndicator] configuration parameter. barBlur Default is 0.0. If different than 0.0, blurs only Flushbar's background. To take effect, make sure your [backgroundColor] has some opacity. The greater the value, the greater the blur. blockBackgroundInteraction Determines if user can interact with the screen behind it. If this is false, [routeBlur] and [routeColor] will be ignored routeBlur Default is 0.0. If different than 0.0, creates a blurred overlay that prevents the user from interacting with the screen. The greater the value, the greater the blur. It does not take effect if [blockBackgroundInteraction] is false routeColor Default is [Colors.transparent]. Only takes effect if [routeBlur] > 0.0. Make sure you use a color with transparency e.g. Colors.grey[600].withOpacity(0.2) . It does not take effect if [blockBackgroundInteraction] is false userInputForm A [TextFormField] in case you want a simple user input. Every other widget is ignored if this is not null. onStatusChanged a callback for you to listen to the different Flushbar status

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.

We are on YouTube! #

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

A beginners tutorial by Matej Rešetár 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.

or the bar will stay hidden. To deactivate any of those properties, pass null to it.

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

will be ignored if is not 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);

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 property userInputForm .

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});

Make it rain #