Build robust, validated forms in Flutter — capture text with TextField and TextEditingController, validate with the Form widget, manage focus and input formatters, and submit and clear cleanly. You will finish able to build a real registration or checkout form that guides users, rejects bad input, and reports errors clearly.
Watch the free preview
TextField and reading what the user types — free to watch, no account needed.
What you'll learn
- Build robust, validated forms with the Form widget and per-field validators
- Capture and read text using TextField and TextEditingController
- Manage focus with FocusNode and keyboard action buttons
- Restrict and shape input with TextInputFormatter and keyboard types
- Submit, validate, and clear a multi-field form cleanly
Syllabus
Capturing Text Input
TextField and reading what the user typesFree preview
TextEditingController — holding and controlling the value
The Form Widget and Validation
Form, GlobalKey and validators
Showing errors and validation strategies
Focus, Formatting and Controls
Focus management with FocusNode
Input formatters and selection controls
Submitting, Clearing and Robust Forms
Submitting and clearing a form
Building a robust real-world form
Lab — 10 Exercises & Solutions
Exercises 1–5
Exercises 6–10