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This cookbook contains recipes that demonstrate how to solve common problems while writing Flutter apps. Each recipe is self-contained and can be used as a reference to help you build up an application.

Animation

• Animate the properties of a Container
• Fade a Widget in and out

Design

• Add a Drawer to a screen
• Displaying SnackBars
• Exporting fonts from a package
• Updating the UI based on orientation
• Using Themes to share colors and font styles
• Using custom fonts
• Working with Tabs

Forms

• Building a form with validation
• Create and style a text field
• Focus on a Text Field
• Handling changes to a text field
• Retrieve the value of a text field

Gestures

• Adding Material Touch Ripples
• Handling Taps
• Implement Swipe to Dismiss

Images

• Display images from the internet
• Fade in images with a placeholder
• Working with cached images

Lists

• Basic List
• Create a horizontal list
• Creating a Grid List
• Creating lists with different types of items
• Place a floating app bar above a list
• Working with long lists

Maintenance

• Report errors to a service

Navigation

• Animating a Widget across screens
• Navigate to a new screen and back
• Navigate with named routes
• Pass arguments to a named route
• Return data from a screen
• Send data to a new screen

Networking

• Fetch data from the internet
• Making authenticated requests
• Parsing JSON in the background
• Working with WebSockets

Persistence

• Persist data with SQLite
• Reading and Writing Files
• Storing key-value data on disk

Plugins

• Play and pause a video
• Take a picture using the Camera

Testing

Integration

• An introduction to integration testing
• Performance profiling
• Scrolling

Unit

• An introduction to unit testing
• Mock dependencies using Mockito

Widget

• An introduction to widget testing
• Finding widgets
• Tapping, dragging and entering text