speech bubble flutter

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Flutter: Making Beautiful Chat Bubbles (2 Approaches)

( 434 Articles )

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This article walks you through a couple of different ways to create beautiful, professional chat bubbles in Flutter. In the first approach, we will write code from scratch and only use built-in stuff of Flutter like CustomPainter, Transform, etc. In the second approach, we will take advantage of a third-party library to get the job done quickly.

A Brief Overview

Nowadays, chat feature appears in many kinds of apps, from messaging apps to e-commerce platforms, from education apps to social networks. In general, speech bubbles often have the following basic characteristics:

• Outgoing messages are on the right side
• Incoming messages are on the left side
• Usually have a small triangle (like an arrowhead)
• The corners are usually rounded
• The background color of incoming and outgoing messages will be different, and different from the background color of the app for easy identification

Creating chat bubbles from scratch

Example preview.

We will create two reusable bubble widgets: one for sent messages and the other for received messages.

1. Create a custom triangle:

2. Sent message bubble:

3. Received message bubble:

4. Display multiple message bubbles by using a list view:

5. The complete code (I put everything in a single file but you should organize each class in a separate file):

Using a 3rd plugin

There are many good open-source packages that provide premade speech bubble widgets: bubble , chat_bubble , flutter_chat_bubble , etc. The example below will use the bubble package which provides a lot of options so that you can implement almost every chat style you want.

1. Installing the plugin by executing this command:

2. Full source code in main.dart :

This article showed you two distinct ways to implement chat bubbles. In the first example, we made things from scratch and only used the built-in features of Flutter (especially the CustomPainter class). In the second example, we got what we want quickly by using a third-party plugin.

Flutter is awesome, beautiful, and interesting. If you’d like to explore new stuff about this SDK, take a look at the following articles:

• Flutter: How to Draw a Heart with CustomPaint
• Flutter: Creating OTP/PIN Input Fields (2 approaches)
• Flutter: Drawing an N-Pointed Star with CustomClipper
• Flutter: Drawing Polygons using ClipPath (4 Examples)
• Flutter Transform examples – Making fancy effects
• 2 Ways to Create Flipping Card Animation in Flutter
• Using GetX (Get) for Navigation and Routing in Flutter

You can also take a tour around our Flutter topic page and Dart topic page to see the latest tutorials and examples.

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Define the typing indicator widget

Make room for the typing indicator, animate the speech bubbles, animate the flashing circles, interactive example, create a typing indicator.

Modern chat apps display indicators when other users are actively typing responses. These indicators help prevent rapid and conflicting responses between you and the other person. In this recipe, you build a speech bubble typing indicator that animates in and out of view.

The following animation shows the app's behavior:

The typing indicator exists within its own widget so that it can be used anywhere in your app. As with any widget that controls animations, the typing indicator needs to be a stateful widget. The widget accepts a boolean value that determines whether the indicator is visible. This speech-bubble-typing indicator accepts a color for the bubbles and two colors for the light and dark phases of the flashing circles within the large speech bubble.

Define a new stateful widget called TypingIndicator .

The typing indicator doesn't occupy any space when it isn't displayed. Therefore, the indicator needs to grow in height when it appears, and shrink in height when it disappears.

The height of the typing indicator could be the natural height of the speech bubbles within the typing indicator. However, the speech bubbles expand with an elastic curve. This elasticity would be too visually jarring if it quickly pushed all the conversation messages up or down. Instead, the height of the typing indicator animates on its own, smoothly expanding before the bubbles appear. When the bubbles disappear, the height smoothly contracts to zero. This behavior requires an explicit animation for the height of the typing indicator.

Define an animation for the height of the typing indicator, and then apply that animated value to the SizedBox widget within the typing indicator.

The TypingIndicator runs an animation forward or backward depending on whether the incoming showIndicator variable is true or false , respectively.

The animation that controls the height uses different animation curves depending on its direction. When the animation moves forward, it needs to quickly make space for the speech bubbles. For this reason, the forward curve runs the entire height animation within the first 40% of the overall appearance animation. When the animation reverses, it needs to give the speech bubbles enough time to disappear before contracting the height. An ease-out curve that uses all the available time is a good way to accomplish this behavior.

The typing indicator displays three speech bubbles. The first two bubbles are small and round. The third bubble is oblong and contains a few flashing circles. These bubbles are staggered in position from the lower left of the available space.

Each bubble appears by animating its scale from 0% to 100%, and each bubble does this at slightly different times so that it looks like each bubble appears after the one before it. This is called a staggered animation .

Paint the three bubbles in the desired positions from the lower left. Then, animate the scale of the bubbles so that the bubbles are staggered whenever the showIndicator property changes.

Within the large speech bubble, the typing indicator displays three small circles that flash repeatedly. Each circle flashes at a slightly different time, giving the impression that a single light source is moving behind each circle. This flashing animation repeats indefinitely.

Introduce a repeating AnimationController to implement the circle flashing and pass it to the StatusBubble .

Each circle calculates its color using a sine ( sin ) function so that the color changes gradually at the minimum and maximum points. Additionally, each circle animates its color within a specified interval that takes up a portion of the overall animation time. The position of these intervals generates the visual effect of a single light source moving behind the three dots.

Congratulations! You now have a typing indicator that lets users know when someone else is typing. The indicator animates in and out, and displays a repeating animation while the other user is typing.

Run the app:

• Click the round on/off switch at the bottom of the screen to turn the typing indicator bubble on and off.

Flutter chat bubble/speech bubble widgets

Chat_bubbles plugin.

Flutter chat bubble widgets, similar to the Whatsapp and more shapes. Easy to use and implement chat bubbles.

Getting Started

Add this to your package's pubspec.yaml file:

Then you just have to import the package with

Now you can use this plugin to implement various types of Chat Bubbles and Date chips.

Single bubble example

Date Chip example

Main example (Chat View)

https://github.com/prahack/chat_bubbles

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speech_bubble

About speech_bubble package.

A widget that emulates a speech bubble in flutter.

Open Source Flutter Apps & Projects that use speech_bubble package

Jugendhackt/fff_info.

Get all information about your climate strike!

Click here to submit an open source Flutter app or project that uses this package.

Any issues in this page? Report here .

Last updated: May 1, 2024

bubble_showcase package

• documentation

BubbleShowcase

BubbleShowcase is a small but powerful flutter package that allows you to highlight specific parts of your app (to explain them to the user for instance) or to showcase your app new features.

Getting Started

This package is easy to use. Take a look at the following snippet (which is using speech_bubble ) :

It creates a BubbleShowcase widget with only one BubbleSlide . This slide will highlight the widget that holds the key widgetToHighlightKey . The speech bubble will be placed on the right of the widget.

BubbleShowcase is not limited to highlight a specific widget. You can also highlight a specific part of your app by its coordinates :

This will display the speech bubble on the top left corner of your app.

The showcase

The showcase is where everything begins. Let's see the available options :

• bubbleShowcaseId The showcase identifier. Must be unique across the app as it is used as a saving mean; for instance when the showcase should not be reopened ( required ).
• bubbleShowcaseVersion The showcase version. Increase it when you update the showcase, this allows to redisplay the it to the user if doNotReopenOnClose is set to true ( required ).
• doNotReopenOnClose Whether this showcase should be reopened once closed.
• bubbleSlides The slides to display ( required & must not be empty ).
• child The widget to display below the slides. It should be your app main widget.
• counterText The current slide counter text. :i targets the current slide number and :n targets the maximum slide number.
• showCloseButton Whether to show a little close button on the top left of the slide.

The slides is what is highlighting a specific part of your app. There are two main categories of positioning : Absolute and Relative . Here is a little summary :

All slides have these options in common :

• shape The slide shape (available are Rectangle , RoundedRectangle , Oval and Circle but you can add a custom one by extending the Shape class).
• boxShadow The slide box shadow (containing the color, the blur radius, the spread radius, ...).
• child The slide child, see below ( required ).

The slides children

Slides children are what are displayed according to what you are highlighting (it can be a speech bubble for example). The same positioning system is also available for children :

All children have these options in common :

• widget The widget to display ( required ).

But you have a lot of other options ! Don't hesitate to check the API Reference or the Github repo .

Contributions

You have a lot of options to contribute to this project ! You can :

• Fork it on Github.
• Submit a feature request or a bug report.
• Donate to the developer.
• Watch a little ad on Clipeee.
• bubble_showcase

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• Notifications

A custom flutter widget for tooltips and popups within your flutter app based off of the red instagram notification popups.

NilsBacke/PHSpeechBubble

Folders and files, repository files navigation, speechbubble.

A flutter widget that emulates a speech bubble.

This widget is modeled after the red Instagram notification popups.

Dart Pub: https://pub.dartlang.org/packages/speech_bubble#-installing-tab-

Depend on it

Add this to your package's pubspec.yaml file:

You can install packages from the command line:

Alternatively, your editor might support flutter packages get. Check the docs for your editor to learn more.

Now in your Dart code, you can use:

Creates a widget that emulates a speech bubble. Could be used for a tooltip, or as a pop-up notification, etc.

• child -> Widget

The child contained by the SpeechBubble.

• nipLocation -> NipLocation

The location of the nip of the speech bubble. Use the NipLocation enum, either TOP, RIGHT, BOTTOM, or LEFT. The nip will automatically center to the side that it is assigned.

• color -> Color

The color of the body of the SpeechBubble and nip. Defaultly red.

• borderRadius -> double

The borderRadius of the SpeechBubble. The SpeechBubble is built with a circular border radius on all 4 corners.

• height -> double

The explicitly defined height of the SpeechBubble. The SpeechBubble will defaultly enclose its child.

• width -> double

The explicitly defined width of the SpeechBubble. The SpeechBubble will defaultly enclose its child.

• padding -> Widget

The padding widget between the child and the edges of the SpeechBubble.

Example Code

Contributors 5.

• Objective-C 12.9%