change value of inputfield flutter code example

Example 1: textfield set value flutter

/// You can use a [TextFormField] instead of [TextField]
/// and use the [initialValue] property. for example:

TextFormField(initialValue: "I am smart")

Example 2: TextFormFiel text update

TextFormField(
  key: Key(_total.toString()), // <- Magic!
  initialValue: _total.toString(),
  keyboardType: TextInputType.number,
  decoration: InputDecoration(
    labelText: 'Total',
  ),
),