set text of text field flutter code example

Example 1: text field flutter

TextField(
              onChanged: (value) {
                //Do something with the user input.
              },
              decoration: InputDecoration(
                hintText: 'Enter your password.',
                contentPadding:
                    EdgeInsets.symmetric(vertical: 10.0, horizontal: 20.0),
                border: OutlineInputBorder(
                  borderRadius: BorderRadius.all(Radius.circular(32.0)),
                ),
                enabledBorder: OutlineInputBorder(
                  borderSide:
                      BorderSide(color: Colors.lightBlueAccent, width: 1.0),
                  borderRadius: BorderRadius.all(Radius.circular(32.0)),
                ),
                focusedBorder: OutlineInputBorder(
                  borderSide:
                      BorderSide(color: Colors.lightBlueAccent, width: 2.0),
                  borderRadius: BorderRadius.all(Radius.circular(32.0)),
                ),
              ),
            ),

Example 2: change text in text feild flutter

TextField(
      controller: txt,
    ),
    RaisedButton(onPressed: () {
        txt.text = "My Stringt";
    }),

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Dart Example