Introduction to TextField TextField in Flutter is the most commonly used text input widget that allows users to collect inputs from the keyboard into an app. We can use the TextField widget in building forms, sending messages, creating search experiences, and many more. By default, Flutter decorated the TextField with an underline. We can also add several attributes with TextField, such as label, icon, inline hint text, and error text using an InputDecoration as the decoration. If we want to remove the decoration properties entirely, it is required to set the decoration to null. 1. decoration It is used to show the decoration around TextField.The most common attributes in decoration are as follows: border : It is used to create a default rounded rectangle border around TextField. labelText : It shows the label text on the selection of TextField. hintText : It shows the hint text inside TextField when there is no text entered. TextField( ...